{"id":132122,"date":"2024-05-20T10:28:13","date_gmt":"2024-05-20T02:28:13","guid":{"rendered":"https:\/\/www.alpapowder.com\/132122\/"},"modified":"2024-05-20T10:28:14","modified_gmt":"2024-05-20T02:28:14","slug":"ung-dung-nhom-nitrit-trong-linh-vuc-dan-nhiet-cao","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/132122\/","title":{"rendered":"\u1ee8ng d\u1ee5ng nh\u00f4m nitrit trong l\u0129nh v\u1ef1c d\u1eabn nhi\u1ec7t cao"},"content":{"rendered":"

\"\"<\/p>\n

Hi\u1ec7n nay, vi\u1ec7c \u1ee9ng d\u1ee5ng nh\u00f4m nitride trong l\u0129nh v\u1ef1c d\u1eabn nhi\u1ec7t cao ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o hai kh\u00eda c\u1ea1nh: ch\u1ea5t n\u1ec1n \u0111\u00f3ng g\u00f3i v\u00e0 ch\u1ea5t \u0111\u1ed9n d\u1eabn nhi\u1ec7t.<\/p>\n

V\u1eadt li\u1ec7u n\u1ec1n \u0111\u00f3ng g\u00f3i \u0111i\u1ec7n t\u1eed l\u00fd t\u01b0\u1edfng<\/p>\n

Ch\u1ea5t n\u1ec1n \u0111\u00f3ng g\u00f3i ch\u1ee7 y\u1ebfu s\u1eed d\u1ee5ng t\u00ednh d\u1eabn nhi\u1ec7t cao c\u1ee7a ch\u00ednh v\u1eadt li\u1ec7u \u0111\u1ec3 d\u1eabn nhi\u1ec7t ra kh\u1ecfi chip (ngu\u1ed3n nhi\u1ec7t) nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 trao \u0111\u1ed5i nhi\u1ec7t v\u1edbi m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i. \u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb b\u00e1n d\u1eabn \u0111i\u1ec7n, ch\u1ea5t n\u1ec1n bao b\u00ec ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u sau:<\/p>\n

(1) \u0110\u1ed9 d\u1eabn nhi\u1ec7t cao;<\/p>\n

(2) Ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u chip;<\/p>\n

(3) N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u s\u1eed d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t t\u1ed1t;<\/p>\n

(4) C\u00e1ch \u0111i\u1ec7n t\u1ed1t, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i \u0111i\u1ec7n v\u00e0 c\u00e1ch \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb;<\/p>\n

(5) \u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc cao, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u1ee7a qu\u00e1 tr\u00ecnh gia c\u00f4ng, \u0111\u00f3ng g\u00f3i v\u00e0 \u1ee9ng d\u1ee5ng thi\u1ebft b\u1ecb;<\/p>\n

(6) Gi\u00e1 c\u1ea3 ph\u00f9 h\u1ee3p v\u00e0 ph\u00f9 h\u1ee3p cho s\u1ea3n xu\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng quy m\u00f4 l\u1edbn.<\/p>\n

 <\/p>\n

Ch\u1ea5t \u0111\u1ed9n d\u1eabn nhi\u1ec7t<\/p>\n

V\u1edbi s\u1ef1 thu nh\u1ecf v\u00e0 t\u00edch h\u1ee3p cao c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed v\u00e0 thi\u1ebft b\u1ecb c\u1ee7a ch\u00fang, v\u1ea5n \u0111\u1ec1 t\u1ea3n nhi\u1ec7t \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t n\u00fat th\u1eaft quan tr\u1ecdng h\u1ea1n ch\u1ebf s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111i\u1ec7n t\u1eed v\u00e0 c\u00e1c v\u1eadt li\u1ec7u composite d\u1eabn nhi\u1ec7t nh\u01b0 v\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t, x\u00e1c \u0111\u1ecbnh hi\u1ec7u \u1ee9ng t\u1ea3n nhi\u1ec7t, \u0111\u00e3 thu h\u00fat ng\u00e0y c\u00e0ng nhi\u1ec1u quan t\u00e2m h\u01a1n n\u1eefa.<\/p>\n

Hi\u1ec7n nay, v\u1eadt li\u1ec7u composite d\u1eabn nhi\u1ec7t th\u01b0\u01a1ng m\u1ea1i th\u01b0\u1eddng bao g\u1ed3m c\u00e1c polyme v\u00e0 ch\u1ea5t \u0111\u1ed9n d\u1eabn nhi\u1ec7t. Do \u0111\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a polyme r\u1ea5t th\u1ea5p, th\u01b0\u1eddng d\u01b0\u1edbi 0,5W\/m\u00b7K, n\u00ean \u0111\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u composite d\u1eabn nhi\u1ec7t ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng ch\u1ea5t \u0111\u1ed9n d\u1eabn nhi\u1ec7t. Hi\u1ec7n nay, ch\u1ea5t \u0111\u1ed9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t tr\u00ean th\u1ecb tr\u01b0\u1eddng l\u00e0 ch\u1ea5t \u0111\u1ed9n oxit, \u0111\u1ea1i di\u1ec7n l\u00e0 Al2O3, v.v. Tuy nhi\u00ean, \u0111\u1ed9 d\u1eabn nhi\u1ec7t n\u1ed9i t\u1ea1i c\u1ee7a alumina ch\u1ec9 l\u00e0 38 ~ 42W\/m\u00b7K. Do h\u1ea1n ch\u1ebf c\u1ee7a n\u00f3 n\u00ean s\u1ebd kh\u00f3 c\u00f3 th\u1ec3 chu\u1ea9n b\u1ecb \u0111\u01b0\u1ee3c v\u1eadt li\u1ec7u t\u1ea3n nhi\u1ec7t \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u c\u1ee7a t\u01b0\u01a1ng lai. V\u1eadt li\u1ec7u composite d\u1eabn nhi\u1ec7t theo y\u00eau c\u1ea7u c\u1ee7a th\u1ecb tr\u01b0\u1eddng.<\/p>\n

C\u1ea7n ch\u1ec9 ra r\u1eb1ng m\u1eb7c d\u00f9 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a nh\u00f4m nitrit t\u1ed1t h\u01a1n nhi\u1ec1u so v\u1edbi nh\u00f4m oxit, oxit berili v\u00e0 cacbua silic, v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c coi l\u00e0 v\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng cho ch\u1ea5t n\u1ec1n b\u00e1n d\u1eabn t\u00edch h\u1ee3p cao v\u00e0 bao b\u00ec thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, nh\u01b0ng n\u00f3 d\u1ec5 b\u1ecb th\u1ee7y ph\u00e2n. b\u1eb1ng c\u00e1ch h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong kh\u00f4ng kh\u00ed. Ph\u1ea3n \u1ee9ng l\u00e0m cho b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c ph\u1ee7 m\u1ed9t l\u1edbp m\u00e0ng nh\u00f4m hydroxit, l\u00e0m gi\u00e1n \u0111o\u1ea1n \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c truy\u1ec1n phonon. H\u01a1n n\u1eefa, h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t l\u00e0m \u0111\u1ea7y l\u1edbn s\u1ebd l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 nh\u1edbt c\u1ee7a polyme, kh\u00f4ng c\u00f3 l\u1ee3i cho qu\u00e1 tr\u00ecnh gia c\u00f4ng khu\u00f4n.<\/p>\n

\u0110\u1ec3 kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 tr\u00ean, ph\u1ea3i ti\u1ebfn h\u00e0nh bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t d\u1eabn nhi\u1ec7t nh\u00f4m nitrit \u0111\u1ec3 c\u1ea3i thi\u1ec7n v\u1ea5n \u0111\u1ec1 li\u00ean k\u1ebft giao di\u1ec7n gi\u1eefa hai h\u1ea1t. Hi\u1ec7n nay, c\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh \u0111\u1ec3 bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t v\u00f4 c\u01a1. M\u1ed9t l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc b\u1ec1 m\u1eb7t, l\u00e0 s\u1ef1 h\u1ea5p ph\u1ee5 ho\u1eb7c ph\u1ea3n \u1ee9ng c\u1ee7a c\u00e1c ch\u1ea5t ph\u00e2n t\u1eed nh\u1ecf nh\u01b0 ch\u1ea5t li\u00ean k\u1ebft tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t v\u00f4 c\u01a1. Lo\u1ea1i c\u00f2n l\u1ea1i l\u00e0 ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p b\u1ec1 m\u1eb7t, l\u00e0 ph\u1ea3n \u1ee9ng gh\u00e9p gi\u1eefa c\u00e1c monome polymer v\u00e0 nh\u00f3m hydroxyl tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t v\u00f4 c\u01a1.<\/p>\n

Hi\u1ec7n nay th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 c\u00e1c s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t t\u00e1c nh\u00e2n gh\u00e9p n\u1ed1i, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00e1c nh\u00e2n li\u00ean k\u1ebft silane v\u00e0 titanate v\u00e0 c\u00e1c lo\u1ea1i ch\u1ea5t x\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00e1c. So v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc b\u1ec1 m\u1eb7t, ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p b\u1ec1 m\u1eb7t c\u00f3 t\u00ednh linh ho\u1ea1t cao h\u01a1n. N\u00f3 c\u00f3 th\u1ec3 ch\u1ecdn c\u00e1c monome v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh ph\u1ea3n \u1ee9ng gh\u00e9p \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n theo c\u00e1c y\u00eau c\u1ea7u \u0111\u1eb7c t\u00ednh kh\u00e1c nhau.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u1ee8ng d\u1ee5ng c\u1ee7a nh\u00f4m nitride trong l\u0129nh v\u1ef1c d\u1eabn nhi\u1ec7t cao ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o hai kh\u00eda c\u1ea1nh: ch\u1ea5t n\u1ec1n \u0111\u00f3ng g\u00f3i v\u00e0 ch\u1ea5t \u0111\u1ed9n d\u1eabn nhi\u1ec7t.<\/p>\n","protected":false},"author":7,"featured_media":132085,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-132122","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/132122"}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=132122"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/132122\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/132085"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=132122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=132122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=132122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}