{"id":14943,"date":"2026-04-22T02:22:01","date_gmt":"2026-04-22T02:22:01","guid":{"rendered":"https:\/\/www.ball-mill-classifiers.com\/?p=14943"},"modified":"2026-04-22T02:23:22","modified_gmt":"2026-04-22T02:23:22","slug":"how-does-ball-mill-affect-the-grain-size-of-ceramic-powders","status":"publish","type":"post","link":"https:\/\/www.ball-mill-classifiers.com\/vi\/how-does-ball-mill-affect-the-grain-size-of-ceramic-powders\/","title":{"rendered":"M\u00e1y nghi\u1ec1n bi \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t g\u1ed1m nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"

Trong qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb b\u1ed9t g\u1ed1m, c\u00f4ng ngh\u1ec7 m\u00e1y nghi\u1ec1n bi<\/a> Nghi\u1ec1n bi \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng quy tr\u00ecnh c\u1ed1t l\u00f5i \u0111\u1ec3 ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac vi m\u00f4. \u0110i\u1ec1u n\u00e0y l\u00e0 do nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a n\u00f3 nh\u01b0 v\u1eadn h\u00e0nh \u0111\u01a1n gi\u1ea3n, chi ph\u00ed d\u1ec5 ki\u1ec3m so\u00e1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng m\u1ea1nh m\u1ebd. Trong qu\u00e1 tr\u00ecnh nghi\u1ec1n bi, c\u00e1c hi\u1ec7u \u1ee9ng hi\u1ec7p \u0111\u1ed3ng c\u1ee7a l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 tr\u01b0\u1eddng n\u0103ng l\u01b0\u1ee3ng di\u1ec5n ra xuy\u00ean su\u1ed1t. Nh\u1eefng hi\u1ec7u \u1ee9ng n\u00e0y l\u00e0m thay \u0111\u1ed5i m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 \u0111\u1eb7c t\u00ednh c\u1ea5u tr\u00fac c\u1ee7a b\u1ed9t g\u1ed1m tr\u00ean ba chi\u1ec1u ch\u00ednh: nghi\u1ec1n v\u1eadt l\u00fd, bi\u1ebfn d\u1ea1ng m\u1ea1ng tinh th\u1ec3 v\u00e0 khu\u1ebfch t\u00e1n giao di\u1ec7n. \u0110i\u1ec1u n\u00e0y t\u1ea1o n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho vi\u1ec7c c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t thi\u00eau k\u1ebft v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t ch\u1ee9c n\u0103ng c\u1ee7a v\u1eadt li\u1ec7u g\u1ed1m.<\/p>\n\n\n\n

L\u1ea5y h\u1ec7 g\u1ed1m Mo\u2013Tm\u2082O\u2083 l\u00e0m v\u00ed d\u1ee5, sau 96 gi\u1edd nghi\u1ec1n bi, c\u00e1c h\u1ea1t molypden c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tinh ch\u1ebf t\u1eeb k\u00edch th\u01b0\u1edbc micromet ban \u0111\u1ea7u xu\u1ed1ng c\u00f2n 8 nm. \u0110\u1ed3ng th\u1eddi, h\u1eb1ng s\u1ed1 m\u1ea1ng tinh th\u1ec3 t\u0103ng t\u1eeb 0,314 nm l\u00ean 0,31564 nm. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y\u2014tinh ch\u1ebf h\u1ea1t k\u00e8m theo s\u1ef1 gi\u00e3n n\u1edf m\u1ea1ng tinh th\u1ec3\u2014th\u01b0\u1eddng g\u1eb7p \u1edf c\u00e1c lo\u1ea1i b\u1ed9t g\u1ed1m h\u1ee3p kim c\u01a1 h\u1ecdc. \u0110\u00e2y c\u0169ng l\u00e0 \u0111\u1eb7c \u0111i\u1ec3m \u0111i\u1ec3n h\u00ecnh c\u1ee7a s\u1ef1 ti\u1ebfn h\u00f3a vi c\u1ea5u tr\u00fac d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh nghi\u1ec1n bi.<\/p>\n\n\n\n

\"Ceramic
M\u00e1y nghi\u1ec1n bi v\u00e0 m\u00e1y ph\u00e2n lo\u1ea1i kh\u00ed ITC d\u00f9ng trong x\u1eed l\u00fd b\u1ed9t g\u1ed1m.<\/figcaption><\/figure>\n\n\n\n

1. C\u01a1 ch\u1ebf c\u1ed1t l\u00f5i v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh c\u1ee7a m\u00e1y nghi\u1ec1n bi<\/a> trong Ki\u1ec3m so\u00e1t B\u1ed9t G\u1ed1m<\/h2>\n\n\n\n

Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc b\u1ed9t g\u1ed1m b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 qu\u00e1 tr\u00ecnh truy\u1ec1n v\u00e0 chuy\u1ec3n h\u00f3a n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc v\u00e0o v\u1eadt li\u1ec7u. Th\u00f4ng qua s\u1ef1 ph\u1ed1i h\u1ee3p c\u1ee7a nhi\u1ec1u c\u01a1 ch\u1ebf, c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c k\u00edch th\u01b0\u1edbc h\u1ea1t. C\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u01b0 t\u1ef7 l\u1ec7 bi\/b\u1ed9t, t\u1ed1c \u0111\u1ed9 quay v\u00e0 v\u1eadt li\u1ec7u nghi\u1ec1n quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh ki\u1ec3m so\u00e1t n\u00e0y.<\/p>\n\n\n\n

1.1 T\u00e1c \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh nghi\u1ec1n c\u01a1 h\u1ecdc: \u0110\u1ed9ng l\u1ef1c tr\u1ef1c ti\u1ebfp th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh tinh luy\u1ec7n h\u1ea1t<\/h3>\n\n\n\n

Nghi\u1ec1n c\u01a1 h\u1ecdc l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh \u0111\u1ec3 tinh ch\u1ebf h\u1ea1t trong qu\u00e1 tr\u00ecnh nghi\u1ec1n bi. Nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i c\u1ee7a n\u00f3 n\u1eb1m \u1edf s\u1ef1 va \u0111\u1eadp, l\u1ef1c c\u1eaft v\u00e0 l\u1ef1c n\u00e9n gi\u1eefa c\u00e1c vi\u00ean bi nghi\u1ec1n, c\u0169ng nh\u01b0 gi\u1eefa c\u00e1c vi\u00ean bi v\u00e0 th\u00e0nh trong c\u1ee7a m\u00e1y nghi\u1ec1n. C\u00e1c l\u1ef1c n\u00e0y tr\u1ef1c ti\u1ebfp ph\u00e1 v\u1ee1 c\u1ea5u tr\u00fac h\u1ea1t ban \u0111\u1ea7u c\u1ee7a b\u1ed9t g\u1ed1m, cho ph\u00e9p tinh ch\u1ebf t\u1eebng b\u01b0\u1edbc.<\/p>\n\n\n\n

D\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n nghi\u1ec1n bi n\u0103ng l\u01b0\u1ee3ng cao, hi\u1ec7u \u1ee9ng n\u00e0y tr\u1edf n\u00ean r\u00f5 r\u1ec7t h\u01a1n. V\u00ed d\u1ee5, khi b\u1ed9t g\u1ed1m Mg\u2082TiO\u2084 \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi n\u0103ng l\u01b0\u1ee3ng cao, k\u00edch th\u01b0\u1edbc h\u1ea1t c\u00f3 th\u1ec3 gi\u1ea3m t\u1eeb k\u00edch th\u01b0\u1edbc micromet xu\u1ed1ng c\u00f2n 163 nm sau 30 gi\u1edd. So v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p tr\u1ea1ng th\u00e1i r\u1eafn truy\u1ec1n th\u1ed1ng, nhi\u1ec7t \u0111\u1ed9 t\u1ed5ng h\u1ee3p c\u00f3 th\u1ec3 gi\u1ea3m 200 \u00b0C, cho ph\u00e9p \u0111i\u1ec1u ch\u1ebf th\u00e0nh c\u00f4ng b\u1ed9t Mg\u2082TiO\u2084 \u0111\u01a1n pha.<\/p>\n\n\n\n

Trong s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf, t\u1ef7 l\u1ec7 bi\/b\u1ed9t v\u00e0 t\u1ed1c \u0111\u1ed9 quay l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh quy\u1ebft \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 nghi\u1ec1n. V\u00ed d\u1ee5, t\u1ef7 l\u1ec7 30:1 v\u00e0 t\u1ed1c \u0111\u1ed9 800 v\u00f2ng\/ph\u00fat c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1i \u01b0u. V\u1eadt li\u1ec7u c\u1ee7a m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n c\u0169ng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn gi\u1edbi h\u1ea1n tinh luy\u1ec7n h\u1ea1t. C\u00e1c h\u1ea1t zirconia (\u0111\u1ed9 c\u1ee9ng Mohs 9) cho hi\u1ec7u qu\u1ea3 nghi\u1ec1n cao h\u01a1n so v\u1edbi c\u00e1c h\u1ea1t zircon silicat. S\u1eed d\u1ee5ng c\u00e1c h\u1ea1t zirconia c\u00f3 k\u00edch th\u01b0\u1edbc 0,1\u20130,5 mm cho ph\u00e9p nghi\u1ec1n ch\u00ednh x\u00e1c b\u1ed9t g\u1ed1m \u0111\u1ebfn k\u00edch th\u01b0\u1edbc nano (<100 nm).<\/p>\n\n\n\n

1.2 Bi\u1ebfn d\u1ea1ng m\u1ea1ng tinh th\u1ec3 v\u00e0 l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng: T\u0103ng c\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng thi\u00eau k\u1ebft<\/h3>\n\n\n\n

Qu\u00e1 tr\u00ecnh nghi\u1ec1n bi li\u00ean t\u1ee5c kh\u00f4ng ch\u1ec9 ph\u00e1 v\u1ee1 c\u00e1c h\u1ea1t m\u00e0 c\u00f2n t\u1ea1o ra m\u1eadt \u0111\u1ed9 cao c\u00e1c sai l\u1ec7ch c\u1ea5u tr\u00fac, khuy\u1ebft t\u1eadt m\u1ea1ng tinh th\u1ec3 v\u00e0 bi\u1ebfn d\u1ea1ng m\u1ea1ng tinh th\u1ec3 trong b\u1ed9t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng t\u00edch tr\u1eef b\u00ean trong v\u1eadt li\u1ec7u. N\u0103ng l\u01b0\u1ee3ng t\u00edch tr\u1eef n\u00e0y l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng ho\u1ea1t h\u00f3a c\u1ea7n thi\u1ebft trong qu\u00e1 tr\u00ecnh thi\u00eau k\u1ebft ti\u1ebfp theo, do \u0111\u00f3 th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh l\u00e0m \u0111\u1eb7c. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi kh\u00e1c nhau t\u1ea1o ra m\u1ee9c \u0111\u1ed9 bi\u1ebfn d\u1ea1ng m\u1ea1ng tinh th\u1ec3 kh\u00e1c nhau \u0111\u00e1ng k\u1ec3. V\u00ed d\u1ee5, m\u00e1y nghi\u1ec1n bi h\u1ed7 tr\u1ee3 plasma (PBM) c\u00f3 th\u1ec3 t\u1ea1o ra bi\u1ebfn d\u1ea1ng m\u1ea1ng tinh th\u1ec3 0,37% trong b\u1ed9t g\u1ed1m AlN trong v\u00f2ng 4 gi\u1edd. Ng\u01b0\u1ee3c l\u1ea1i, m\u00e1y nghi\u1ec1n bi truy\u1ec1n th\u1ed1ng (TBM) ch\u1ec9 \u0111\u1ea1t \u0111\u01b0\u1ee3c bi\u1ebfn d\u1ea1ng 0,32% sau 6 gi\u1edd.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m c\u1ee7a vi\u1ec7c bi\u1ebfn d\u1ea1ng m\u1ea1ng tinh th\u1ec3 tr\u1edf n\u00ean \u0111\u1eb7c bi\u1ec7t r\u00f5 r\u1ec7t trong c\u00e1c qu\u00e1 tr\u00ecnh x\u1eed l\u00fd ti\u1ebfp theo. V\u00ed d\u1ee5, sau 3 gi\u1edd x\u1eed l\u00fd b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p PBM, nhi\u1ec7t \u0111\u1ed9 cacbon h\u00f3a c\u1ee7a b\u1ed9t g\u1ed1m h\u1ed7n h\u1ee3p W\u2013C c\u00f3 th\u1ec3 gi\u1ea3m t\u1eeb 1600 \u00b0C xu\u1ed1ng 1100 \u00b0C. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 ph\u1ea3n \u1ee9ng. N\u00f3 c\u00f3 li\u00ean quan ch\u1eb7t ch\u1ebd \u0111\u1ebfn hi\u1ec7u \u1ee9ng k\u00edch ho\u1ea1t c\u01a1 h\u1ecdc c\u1ee7a qu\u00e1 tr\u00ecnh nghi\u1ec1n, gi\u00fap gi\u1ea3m n\u0103ng l\u01b0\u1ee3ng ho\u1ea1t h\u00f3a cho qu\u00e1 tr\u00ecnh chuy\u1ec3n pha v\u00e0 c\u00e1c ph\u1ea3n \u1ee9ng.<\/p>\n\n\n\n

1.3 Khu\u1ebfch t\u00e1n giao di\u1ec7n v\u00e0 dung d\u1ecbch r\u1eafn: C\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng nh\u1ea5t v\u1ec1 th\u00e0nh ph\u1ea7n<\/h3>\n\n\n\n

C\u00e1c t\u00e1c \u0111\u1ed9ng c\u01a1 h\u00f3a h\u1ecdc sinh ra trong qu\u00e1 tr\u00ecnh nghi\u1ec1n bi c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 c\u00e1c r\u00e0o c\u1ea3n khu\u1ebfch t\u00e1n. \u0110i\u1ec1u n\u00e0y th\u00fac \u0111\u1ea9y s\u1ef1 khu\u1ebfch t\u00e1n gi\u1eefa c\u00e1c b\u1ec1 m\u1eb7t v\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh dung d\u1ecbch r\u1eafn gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau trong b\u1ed9t g\u1ed1m. K\u1ebft qu\u1ea3 l\u00e0, m\u1ed9t dung d\u1ecbch r\u1eafn \u0111\u1ed3ng nh\u1ea5t ho\u1eb7c h\u1ec7 h\u1ed7n h\u1ee3p \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh, c\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng nh\u1ea5t v\u1ec1 th\u00e0nh ph\u1ea7n v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n

V\u00ed d\u1ee5, trong h\u1ec7 Mo\u2013Tm\u2082O\u2083, \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c dung d\u1ecbch r\u1eafn ho\u00e0n to\u00e0n c\u1ee7a Tm\u2082O\u2083 trong ma tr\u1eadn Mo c\u1ea7n 96 gi\u1edd nghi\u1ec1n bi li\u00ean t\u1ee5c. \u0110i\u1ec1u n\u00e0y cu\u1ed1i c\u00f9ng t\u1ea1o th\u00e0nh dung d\u1ecbch r\u1eafn b\u00e3o h\u00f2a qu\u00e1 m\u1ee9c Mo(Tm,O). \u0110\u1ec3 t\u0103ng c\u01b0\u1eddng h\u01a1n n\u1eefa hi\u1ec7u qu\u1ea3 khu\u1ebfch t\u00e1n v\u00e0 tr\u1ed9n, ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi h\u1ed7 tr\u1ee3 plasma \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i. Th\u00f4ng qua hi\u1ec7u \u1ee9ng \u201cn\u1ed5 nhi\u1ec7t \u2013 l\u00e0m ngu\u1ed9i\u201d (v\u1edbi nhi\u1ec7t \u0111\u1ed9 electron l\u00ean \u0111\u1ebfn 10\u2074 K), th\u1eddi gian tr\u1ed9n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

V\u00ed d\u1ee5, trong qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o b\u1ed9t g\u1ed1m c\u00f3 \u0111\u1ed9 entropy cao, vi\u1ec7c tr\u1ed9n \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ec9 trong 3 gi\u1edd. N\u1ed3ng \u0111\u1ed9 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n nh\u1edd 40% so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi truy\u1ec1n th\u1ed1ng. \u0110i\u1ec1u n\u00e0y ph\u1ea3n \u00e1nh nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n h\u1ed7 tr\u1ee3 plasma trong vi\u1ec7c n\u00e2ng cao hi\u1ec7u qu\u1ea3 nghi\u1ec1n v\u00e0 th\u00fac \u0111\u1ea9y s\u1ef1 khu\u1ebfch t\u00e1n c\u00e1c th\u00e0nh ph\u1ea7n.<\/p>\n\n\n\n

2. C\u00e1c quy \u0111\u1ecbnh ph\u00e1p lu\u1eadt v\u1ec1 th\u00f4ng s\u1ed1 quy tr\u00ecnh nghi\u1ec1n bi<\/h2>\n\n\n\n
\"Epic
M\u00e1y nghi\u1ec1n bi Epic<\/figcaption><\/figure>\n\n\n\n

Ki\u1ec3m so\u00e1t khoa h\u1ecdc c\u00e1c th\u00f4ng s\u1ed1 c\u1ee7a m\u00e1y nghi\u1ec1n bi l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc h\u1ea1t ch\u00ednh x\u00e1c trong b\u1ed9t g\u1ed1m. B\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a th\u1eddi gian nghi\u1ec1n, s\u1ef1 k\u1ebft h\u1ee3p tr\u01b0\u1eddng n\u0103ng l\u01b0\u1ee3ng v\u00e0 s\u1ef1 ph\u00f9 h\u1ee3p c\u1ee7a m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n theo \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u, c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh b\u1ed9t mong mu\u1ed1n. \u0110i\u1ec1u n\u00e0y c\u0169ng gi\u00fap tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 v\u00f3n c\u1ee5c v\u00e0 nghi\u1ec1n qu\u00e1 m\u1ee9c.<\/p>\n\n\n\n

2.1 Ki\u1ec3m so\u00e1t khung th\u1eddi gian: Tr\u00e1nh v\u00f3n c\u1ee5c v\u00e0 nghi\u1ec1n qu\u00e1 m\u1ee9c<\/h3>\n\n\n\n

M\u1ed1i quan h\u1ec7 gi\u1eefa th\u1eddi gian nghi\u1ec1n v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t th\u1ec3 hi\u1ec7n s\u1ef1 ti\u1ebfn tri\u1ec3n theo t\u1eebng giai \u0111o\u1ea1n. Trong m\u1ed9t kho\u1ea3ng th\u1eddi gian h\u1ee3p l\u00fd, k\u00edch th\u01b0\u1edbc h\u1ea1t gi\u1ea3m khi th\u1eddi gian nghi\u1ec1n t\u0103ng. Tuy nhi\u00ean, v\u01b0\u1ee3t qu\u00e1 m\u1ed9t th\u1eddi \u0111i\u1ec3m t\u1edbi h\u1ea1n, qu\u00e1 tr\u00ecnh h\u00e0n ngu\u1ed9i gi\u1eefa c\u00e1c h\u1ea1t d\u1eabn \u0111\u1ebfn s\u1ef1 k\u1ebft t\u1ee5, khi\u1ebfn k\u00edch th\u01b0\u1edbc h\u1ea1t t\u0103ng l\u00ean.<\/p>\n\n\n\n

V\u00ed d\u1ee5, trong b\u1ed9t g\u1ed1m MgO, k\u00edch th\u01b0\u1edbc h\u1ea1t gi\u1ea3m t\u1eeb 425 nm xu\u1ed1ng 114 nm sau 25 gi\u1edd nghi\u1ec1n. Tuy nhi\u00ean, khi nghi\u1ec1n v\u01b0\u1ee3t qu\u00e1 30 gi\u1edd, hi\u1ec7n t\u01b0\u1ee3ng h\u00e0n ngu\u1ed9i t\u0103ng c\u01b0\u1eddng v\u00e0 s\u1ef1 v\u00f3n c\u1ee5c tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9t. H\u00e0nh vi n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi quy t\u1eafc chung c\u1ee7a qu\u00e1 tr\u00ecnh nghi\u1ec1n c\u01a1 h\u1ecdc \u0111\u1ec3 \u0111i\u1ec1u ch\u1ebf b\u1ed9t nano, trong \u0111\u00f3 giai \u0111o\u1ea1n sau h\u01b0\u1edbng t\u1edbi s\u1ef1 \u0111\u1ed3ng nh\u1ea5t h\u00f3a v\u00e0 t\u1ea1o h\u00ecnh. Nghi\u1ec1n qu\u00e1 m\u1ee9c d\u1eabn \u0111\u1ebfn s\u1ef1 v\u00f3n c\u1ee5c.<\/p>\n\n\n\n

2.2 S\u1ef1 c\u1ed9ng h\u01b0\u1edfng tr\u01b0\u1eddng n\u0103ng l\u01b0\u1ee3ng: N\u00e2ng cao hi\u1ec7u qu\u1ea3 nghi\u1ec1n<\/h3>\n\n\n\n

Hi\u1ec7u qu\u1ea3 c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi c\u01a1 h\u1ecdc \u0111\u01a1n l\u1ebb b\u1ecb h\u1ea1n ch\u1ebf. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p nhi\u1ec1u tr\u01b0\u1eddng n\u0103ng l\u01b0\u1ee3ng, hi\u1ec7u qu\u1ea3 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng nghi\u1ec1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3. V\u00ed d\u1ee5, khi s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n bi h\u1ed7 tr\u1ee3 plasma DBD \u0111\u1ec3 x\u1eed l\u00fd b\u1ed9t g\u1ed1m TiO\u2082, k\u00edch th\u01b0\u1edbc h\u1ea1t trung b\u00ecnh 15 nm c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ec9 trong 7 gi\u1edd. \u0110i\u1ec1u n\u00e0y hi\u1ec7u qu\u1ea3 h\u01a1n g\u1ea5p ba l\u1ea7n so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi th\u00f4ng th\u01b0\u1eddng. S\u1ef1 c\u1ea3i thi\u1ec7n n\u00e0y l\u00e0 do hi\u1ec7u \u1ee9ng hi\u1ec7p \u0111\u1ed3ng c\u1ee7a \u1ee9ng su\u1ea5t nhi\u1ec7t t\u1eeb plasma v\u00e0 l\u1ef1c c\u01a1 h\u1ecdc. C\u00e1c hi\u1ec7u \u1ee9ng k\u1ebft h\u1ee3p n\u00e0y \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh ph\u00e2n m\u1ea3nh h\u1ea1t v\u00e0 khu\u1ebfch t\u00e1n nguy\u00ean t\u1ed1, t\u0103ng c\u01b0\u1eddng ho\u1ea1t t\u00ednh c\u01a1 h\u1ecdc.<\/p>\n\n\n\n

2.3 L\u1ef1a ch\u1ecdn m\u00f4i tr\u01b0\u1eddng ph\u00f9 h\u1ee3p: Th\u00edch \u1ee9ng v\u1edbi c\u00e1c \u0111\u1eb7c t\u00ednh b\u1ed9t kh\u00e1c nhau<\/h3>\n\n\n\n

C\u00e1c th\u00f4ng s\u1ed1 c\u1ee7a v\u1eadt li\u1ec7u nghi\u1ec1n ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c t\u00ednh c\u1ee7a b\u1ed9t g\u1ed1m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh nghi\u1ec1n bi h\u1ed7 tr\u1ee3 plasma, trong \u0111\u00f3 \u0111i\u1ec7n \u00e1p plasma ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i c\u1ee7a v\u1eadt li\u1ec7u. \u0110\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i cao nh\u01b0 TiO\u2082, \u0111i\u1ec7n \u00e1p plasma 22 kV l\u00e0 \u0111\u1ee7. \u0110\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p nh\u01b0 ZnO, c\u1ea7n t\u0103ng \u0111i\u1ec7n \u00e1p l\u00ean 25 kV \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng hi\u1ec7u \u1ee9ng va ch\u1ea1m electron v\u00e0 \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh tinh luy\u1ec7n h\u1ea1t hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

3. Gi\u1edbi h\u1ea1n \u1ee9ng d\u1ee5ng v\u00e0 th\u00e1ch th\u1ee9c c\u1ee7a qu\u00e1 tr\u00ecnh nghi\u1ec1n bi<\/h2>\n\n\n\n

M\u1eb7c d\u00f9 nghi\u1ec1n bi c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh b\u1ed9t g\u1ed1m, nh\u01b0ng nh\u1eefng th\u00e1ch th\u1ee9c n\u1ea3y sinh khi k\u00edch th\u01b0\u1edbc h\u1ea1t ti\u1ebfn g\u1ea7n \u0111\u1ebfn k\u00edch th\u01b0\u1edbc nano ho\u1eb7c th\u1eadm ch\u00ed d\u01b0\u1edbi nano. Nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y ch\u1ee7 y\u1ebfu bao g\u1ed3m s\u1ef1 ph\u00e1t tri\u1ec3n h\u1ea1t b\u1ea5t th\u01b0\u1eddng v\u00e0 nghi\u1ec1n qu\u00e1 m\u1ee9c. Khi k\u00edch th\u01b0\u1edbc h\u1ea1t gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 10 nm, n\u0103ng l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t t\u0103ng m\u1ea1nh. Trong qu\u00e1 tr\u00ecnh thi\u00eau k\u1ebft ti\u1ebfp theo, s\u1ef1 ph\u00e1t tri\u1ec3n h\u1ea1t b\u1ea5t th\u01b0\u1eddng r\u1ea5t d\u1ec5 x\u1ea3y ra, l\u00e0m m\u1ea5t \u1ed5n \u0111\u1ecbnh c\u1ea5u tr\u00fac nano. V\u00ed d\u1ee5, trong b\u1ed9t nano-ZrO\u2082, vi\u1ec7c th\u00eam 5% MgO l\u00e0m ch\u1ea5t \u201cghim\u201d ranh gi\u1edbi h\u1ea1t c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 s\u1ef1 ph\u00e1t tri\u1ec3n h\u1ea1t. Ngay c\u1ea3 khi thi\u00eau k\u1ebft \u1edf nhi\u1ec7t \u0111\u1ed9 cao 1523 K, c\u1ea5u tr\u00fac h\u1ea1t nano v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c duy tr\u00ec. M\u1eb7t kh\u00e1c, nghi\u1ec1n qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh b\u1ed9t kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t. V\u00ed d\u1ee5, trong b\u1ed9t g\u1ed1m d\u00f9ng cho pin lithium, khi k\u00edch th\u01b0\u1edbc h\u1ea1t gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 2 \u03bcm, c\u00e1c ph\u1ea3n \u1ee9ng giao di\u1ec7n c\u00f3 th\u1ec3 tr\u1edf n\u00ean kh\u00f4ng \u1ed5n \u0111\u1ecbnh. <\/p>\n\n\n\n

\u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn hi\u1ec7u su\u1ea5t \u0111i\u1ec7n h\u00f3a. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c quy tr\u00ecnh nghi\u1ec1n bi theo c\u1ea5p \u0111\u1ed9. V\u00ed d\u1ee5, vi\u1ec7c gi\u1ea3m d\u1ea7n k\u00edch th\u01b0\u1edbc bi t\u1eeb 20 mm xu\u1ed1ng 6 mm cho ph\u00e9p ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng nghi\u1ec1n qu\u00e1 m\u1ee9c. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c chi\u1ebfn l\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a b\u1ed9t nghi\u1ec1n bi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00e0ng ng\u0103n pin lithium, trong \u0111\u00f3 vi\u1ec7c ki\u1ec3m so\u00e1t th\u00f4ng s\u1ed1 gi\u00fap tr\u00e1nh suy gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

\"ball
d\u00f2ng s\u1ea3n ph\u1ea9m m\u00e1y ph\u00e2n lo\u1ea1i nghi\u1ec1n bi<\/figcaption><\/figure>\n\n\n\n

4. Ph\u1ea7n k\u1ebft lu\u1eadn<\/a><\/h2>\n\n\n\n

Gi\u00e1 tr\u1ecb c\u1ed1t l\u00f5i c\u1ee7a qu\u00e1 tr\u00ecnh nghi\u1ec1n bi n\u1eb1m \u1edf s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc v\u00e0 h\u00f3a h\u1ecdc. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p t\u00e1i c\u1ea5u tr\u00fac c\u00e1c con \u0111\u01b0\u1eddng \u201ckhu\u1ebfch t\u00e1n \u2013 bi\u1ebfn \u0111\u1ed5i pha \u2013 khuy\u1ebft t\u1eadt\u201d c\u1ee7a b\u1ed9t g\u1ed1m \u1edf c\u1ea5p \u0111\u1ed9 nano. K\u1ebft qu\u1ea3 l\u00e0, c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc h\u1ea1t ch\u00ednh x\u00e1c v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t. M\u00e1y nghi\u1ec1n bi v\u1eabn l\u00e0 c\u00f4ng ngh\u1ec7 ch\u1ee7 ch\u1ed1t \u0111\u1ec3 s\u1ea3n xu\u1ea5t b\u1ed9t g\u1ed1m quy m\u00f4 l\u1edbn. Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n bi truy\u1ec1n th\u1ed1ng v\u1eabn c\u00f2n g\u1eb7p ph\u1ea3i nh\u1eefng h\u1ea1n ch\u1ebf nh\u01b0 th\u1eddi gian x\u1eed l\u00fd d\u00e0i v\u00e0 ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng cao. S\u1ef1 ph\u00e1t tri\u1ec3n trong t\u01b0\u01a1ng lai s\u1ebd t\u1eadp trung v\u00e0o s\u1ef1 k\u1ebft h\u1ee3p \u0111a tr\u01b0\u1eddng v\u1eadt l\u00fd, ch\u1eb3ng h\u1ea1n nh\u01b0 plasma k\u1ebft h\u1ee3p v\u1edbi si\u00eau \u00e2m ho\u1eb7c nghi\u1ec1n bi h\u1ed7 tr\u1ee3 t\u1eeb tr\u01b0\u1eddng. Th\u00f4ng qua s\u1ef1 c\u1ed9ng h\u01b0\u1edfng c\u1ee7a nhi\u1ec1u tr\u01b0\u1eddng n\u0103ng l\u01b0\u1ee3ng, c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p h\u1ee3p kim h\u00f3a c\u01a1 h\u1ecdc th\u00f4ng th\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y s\u1ebd cho ph\u00e9p s\u1ea3n xu\u1ea5t b\u1ed9t g\u1ed1m c\u00f3 k\u00edch th\u01b0\u1edbc d\u01b0\u1edbi 10 nm m\u1ed9t c\u00e1ch c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. \u0110\u1ed3ng th\u1eddi, vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a h\u01a1n n\u1eefa c\u00e1c th\u00f4ng s\u1ed1 quy tr\u00ecnh s\u1ebd gi\u1ea3m ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 th\u00fac \u0111\u1ea9y \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i h\u01a1n c\u00f4ng ngh\u1ec7 nghi\u1ec1n bi trong g\u1ed1m s\u1ee9 ti\u00ean ti\u1ebfn v\u00e0 v\u1eadt li\u1ec7u n\u0103ng l\u01b0\u1ee3ng m\u1edbi.<\/p>\n\n\n\n

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\"Emily<\/figure>\n\n\n\n
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C\u1ea3m \u01a1n b\u1ea1n \u0111\u00e3 \u0111\u1ecdc. T\u00f4i hy v\u1ecdng b\u00e0i vi\u1ebft c\u1ee7a t\u00f4i h\u1eefu \u00edch. Vui l\u00f2ng \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn b\u00ean d\u01b0\u1edbi. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 li\u00ean h\u1ec7 v\u1edbi b\u1ed9 ph\u1eadn ch\u0103m s\u00f3c kh\u00e1ch h\u00e0ng tr\u1ef1c tuy\u1ebfn c\u1ee7a Zelda n\u1ebfu c\u00f3 b\u1ea5t k\u1ef3 th\u1eafc m\u1eafc n\u00e0o kh\u00e1c.<\/p>\n \u2014 \u0110\u0103ng b\u1edfi Emily Chen<\/a><\/cite><\/blockquote>\n\n\n\n

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