{"id":129950,"date":"2023-11-15T10:46:44","date_gmt":"2023-11-15T02:46:44","guid":{"rendered":"https:\/\/www.alpapowder.com\/129950\/"},"modified":"2023-11-15T10:46:45","modified_gmt":"2023-11-15T02:46:45","slug":"tam-quan-trong-cua-qua-trinh-bien-doi-bot-cacbua-silic","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/129950\/","title":{"rendered":"T\u1ea7m quan tr\u1ecdng c\u1ee7a qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i b\u1ed9t cacbua silic"},"content":{"rendered":"

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Cacbua silic (SiC) l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u phi kim lo\u1ea1i v\u00f4 c\u01a1, c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng v\u00e0 tri\u1ec3n v\u1ecdng ph\u00e1t tri\u1ec3n t\u1ed1t, sau khi \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o th\u00e0nh g\u1ed1m s\u1ee9, n\u00f3 l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u k\u1ebft c\u1ea5u tuy\u1ec7t v\u1eddi, c\u00f3 m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i cao v\u00e0 \u0111\u1ed9 c\u1ee9ng ri\u00eang, kh\u00f4ng d\u1ec5 bi\u1ebfn d\u1ea1ng. , v\u00e0 c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao v\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p hi\u1ec7n \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh \u0111\u01b0\u1ee3c c\u00e2n nh\u1eafc \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u \u0111\u1ed9ng c\u01a1 nhi\u1ec7t \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong v\u00f2i phun nhi\u1ec7t \u0111\u1ed9 cao, c\u00e1nh tuabin, c\u00e1nh qu\u1ea1t t\u0103ng \u00e1p, v.v.<\/p>\n

Do \u0111\u00f3, ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00e3 \u0111\u1eb7t ra c\u00e1c y\u00eau c\u1ea7u cao h\u01a1n \u0111\u1ed1i v\u1edbi g\u1ed1m SiC v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c h\u00ecnh h\u1ecdc, \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo dai v\u00e0 \u0111\u1ed9 tin c\u1eady, v\u00e0 quy tr\u00ecnh \u0111\u00fac khu\u00f4n l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng. trong vi\u1ec7c th\u00e1o khu\u00f4n, kh\u00f3 kh\u0103n trong vi\u1ec7c ch\u1ebf t\u1ea1o c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p, m\u1eadt \u0111\u1ed9 g\u1ed1m s\u1ee9 kh\u00f4ng \u0111\u1ee7, v.v… S\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a nh\u1eefng khuy\u1ebft t\u1eadt n\u00e0y s\u1ebd h\u1ea1n ch\u1ebf \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong c\u00e1c l\u0129nh v\u1ef1c cao c\u1ea5p.Do \u0111\u00f3, c\u1ea7n ph\u1ea3i ch\u1ebf t\u1ea1o c\u00e1c s\u1ea3n ph\u1ea9m g\u1ed1m s\u1ee9 c\u00f3 hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i v\u00e0 \u0111\u1ed9 tin c\u1eady cao, l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u00e1m ph\u00e1 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u00fac.<\/p>\n

L\u1edbp silicon<\/a> dioxide tr\u00ean b\u1ec1 m\u1eb7t cacbua silic s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a b\u1ed9t trong pha n\u01b0\u1edbc.Silic dioxide s\u1ebd t\u1ea1o th\u00e0nh c\u00e1c nh\u00f3m hydroxyl silicon<\/a> “Si-OH” trong pha n\u01b0\u1edbc.C\u00e1c nh\u00f3m hydroxyl silicon<\/a> c\u00f3 t\u00ednh axit trong pha n\u01b0\u1edbc . , do \u0111\u00f3 \u0111\u1ed9 ph\u00e2n t\u00e1n c\u1ee7a cacbua silic l\u00e0 \u0110i\u1ec3m \u0111\u1eb3ng \u0111i\u1ec7n c\u00f3 t\u00ednh axit.C\u00e0ng c\u00f3 nhi\u1ec1u silicon<\/a> dioxide th\u00ec \u0111i\u1ec3m \u0111\u1eb3ng \u0111i\u1ec7n c\u1ee7a cacbua silic c\u00e0ng g\u1ea7n v\u1edbi \u0111\u1ea7u axit.Khi gi\u00e1 tr\u1ecb pH th\u1ea5p h\u01a1n \u0111i\u1ec3m \u0111\u1eb3ng \u0111i\u1ec7n c\u1ee7a b\u1ed9t, silanol s\u1ebd h\u00fat c\u00e1c ion hydro l\u00e0m cho b\u1ec1 m\u1eb7t h\u1ea1t t\u00edch \u0111i\u1ec7n d\u01b0\u01a1ng v\u00e0 do \u0111\u00f3 th\u1ebf Zeta tr\u1edf th\u00e0nh gi\u00e1 tr\u1ecb d\u01b0\u01a1ng.Trong \u0111i\u1ec1u ki\u1ec7n ki\u1ec1m, silanol s\u1ebd ph\u1ea3n \u1ee9ng v\u1edbi n\u1ed3ng \u0111\u1ed9 cao OH- trong dung d\u1ecbch t\u1ea1o th\u00e0nh [Si-O]- tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t, l\u00e0m cho b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t t\u00edch \u0111i\u1ec7n \u00e2m n\u00ean \u0111i\u1ec7n th\u1ebf Zeta c\u0169ng \u00e2m.<\/p>\n

S\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a b\u1ed9t trong pha n\u01b0\u1edbc c\u00f3 li\u00ean quan ch\u1eb7t ch\u1ebd v\u1edbi gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a th\u1ebf Zeta n\u00ean l\u1edbp silica<\/a> h\u00ecnh th\u00e0nh tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t c\u00f3 vai tr\u00f2 r\u1ea5t l\u1edbn trong qu\u00e1 tr\u00ecnh ph\u00e2n t\u00e1n c\u1ee7a b\u1ed9t.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn \u0111\u1ed5i h\u00f3a h\u1ecdc \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc x\u1ea3y ra trong qu\u00e1 tr\u00ecnh ph\u1ee7 b\u1ec1 m\u1eb7t.\u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t trong bi\u1ebfn \u0111\u1ed5i b\u1ed9t.L\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: l\u1edbp ph\u1ee7 v\u00f4 c\u01a1 v\u00e0 l\u1edbp ph\u1ee7 h\u1eefu c\u01a1.N\u00f3 ch\u1ee7 y\u1ebfu l\u1eafng \u0111\u1ecdng m\u1ed9t l\u1edbp oxit, hydroxit ho\u1eb7c ch\u1ea5t h\u1eefu c\u01a1 tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t v\u00f4 c\u01a1.Khi l\u1edbp ph\u1ee7 l\u00e0 oxit ho\u1eb7c hydroxit th\u00ec g\u1ecdi l\u00e0 l\u1edbp ph\u1ee7 v\u00f4 c\u01a1.Khi l\u1edbp ph\u1ee7 l\u00e0 ch\u1ea5t h\u1eefu c\u01a1 th\u00ec g\u1ecdi l\u00e0 l\u1edbp ph\u1ee7 h\u1eefu c\u01a1.<\/p>\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u1ee7 v\u00f4 c\u01a1 ch\u1ee7 y\u1ebfu bao g\u1ed3m ph\u01b0\u01a1ng ph\u00e1p th\u1ee7y ph\u00e2n alkoxide, ph\u01b0\u01a1ng ph\u00e1p k\u1ebft t\u1ee7a \u0111\u1ed3ng nh\u1ea5t, ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o m\u1ea7m kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p sol.Gel, v.v. Trong s\u1ed1 \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o m\u1ea7m kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t. c\u1ee7a b\u1ed9t v\u00f4 c\u01a1, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n c\u1ee7a n\u00f3.C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u1ee7 h\u1eefu c\u01a1 ch\u1ee7 y\u1ebfu bao g\u1ed3m gh\u00e9p b\u1ec1 m\u1eb7t h\u1eefu c\u01a1, ph\u1ee7 h\u1ea5p ph\u1ee5 b\u1ec1 m\u1eb7t v\u00e0 s\u1eeda \u0111\u1ed5i \u0111\u00f3ng g\u00f3i.N\u00f3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u composite v\u00f4 c\u01a1 ho\u1eb7c ch\u1ea5t \u0111\u1ed9n \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng th\u1ea5m \u01b0\u1edbt v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a b\u1ed9t v\u00f4 c\u01a1 v\u00e0 ma tr\u1eadn h\u1eefu c\u01a1 N\u00f3 c\u00f2n \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n c\u1ee7a b\u1ed9t v\u00f4 c\u01a1 trong n\u01b0\u1edbc.<\/p>\n

B\u1ed9t SiC c\u00f3 k\u00edch th\u01b0\u1edbc micron c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n cao l\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u1ea7n thi\u1ebft \u0111\u1ec3 thu \u0111\u01b0\u1ee3c c\u00e1c s\u1ea3n ph\u1ea9m g\u1ed1m s\u1ee9 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c, \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo dai v\u00e0 \u0111\u1ed9 tin c\u1eady cao.Do \u0111\u00f3, vi\u1ec7c kh\u00e1m ph\u00e1 c\u00e1c c\u00f4ng ngh\u1ec7 li\u00ean quan \u0111\u1ec3 ch\u1ebf t\u1ea1o g\u1ed1m s\u1ee9 cacbua silic c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c cao c\u1ea5p l\u00e0 r\u1ea5t c\u00f3 \u00fd ngh\u0129a .<\/p>\n","protected":false},"excerpt":{"rendered":"

L\u1edbp silicon dioxide tr\u00ean b\u1ec1 m\u1eb7t cacbua silic s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a b\u1ed9t trong pha n\u01b0\u1edbc.<\/p>\n","protected":false},"author":7,"featured_media":129913,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-129950","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\/129950"}],"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=129950"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/129950\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/129913"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=129950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=129950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=129950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}