{"id":132797,"date":"2024-07-05T11:30:10","date_gmt":"2024-07-05T03:30:10","guid":{"rendered":"https:\/\/www.alpapowder.com\/132797\/"},"modified":"2024-07-05T11:30:11","modified_gmt":"2024-07-05T03:30:11","slug":"cac-loai-va-ung-dung-cua-alumina-min","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/132797\/","title":{"rendered":"C\u00e1c lo\u1ea1i v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a alumina m\u1ecbn"},"content":{"rendered":"

\"\"<\/p>\n

Alumina m\u1ecbn c\u00f3 nhi\u1ec1u lo\u1ea1i v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. N\u00f3 l\u00e0 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u01b0a th\u00edch trong nhi\u1ec1u l\u0129nh v\u1ef1c.<\/p>\n

V\u00ec v\u1eady, \u201cngu\u1ed3n nguy\u00ean li\u1ec7u d\u1ed3i d\u00e0o\u201d, \u201cc\u00f3 th\u1ec3 t\u00ecm th\u1ea5y \u1edf m\u1ecdi n\u01a1i\u201d, \u201cgi\u00e1 r\u1ebb\u201d v\u00e0 \u201cc\u00e1ch pha ch\u1ebf \u0111\u01a1n gi\u1ea3n\u201d \u0111\u00e3 tr\u1edf th\u00e0nh nh\u00e3n hi\u1ec7u cho alumina. S\u1ef1 khan hi\u1ebfm l\u00e0m cho m\u1ecdi th\u1ee9 c\u00f3 gi\u00e1 tr\u1ecb. Nh\u1eefng nh\u00e3n hi\u1ec7u n\u00e0y d\u1ec5 khi\u1ebfn m\u1ecdi ng\u01b0\u1eddi hi\u1ec3u l\u1ea7m r\u1eb1ng alumina l\u00e0 v\u1eadt li\u1ec7u c\u1ea5p th\u1ea5p. Tr\u01b0\u1edbc h\u1ebft, ng\u01b0\u1eddi bi\u00ean t\u1eadp cho r\u1eb1ng nh\u1eefng nh\u00e3n n\u00e0y kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c alumina c\u00f3 ph\u1ea3i l\u00e0 c\u1ea5p th\u1ea5p hay kh\u00f4ng, nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 cho th\u1ea5y alumina l\u00e0 v\u1eadt li\u1ec7u r\u1ea5t ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u l\u0129nh v\u1ef1c. Th\u1ee9 hai, ngay c\u1ea3 t\u1eeb g\u00f3c \u0111\u1ed9 gi\u00e1 c\u1ea3, n\u1ed9i dung k\u1ef9 thu\u1eadt, hi\u1ec7u su\u1ea5t v\u00e0 c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c, alumina kh\u00f4ng thi\u1ebfu \u201cs\u1ea3n ph\u1ea9m cao c\u1ea5p\u201d. Nh\u1eefng “s\u1ea3n ph\u1ea9m cao c\u1ea5p” n\u00e0y \u0111\u00f3ng vai tr\u00f2 kh\u00f4ng th\u1ec3 thay th\u1ebf trong c\u00e1c l\u0129nh v\u1ef1c c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u01b0 ch\u1ea5t b\u00e1n d\u1eabn v\u00e0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n

S\u1ee3i nh\u00f4m<\/p>\n

Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a s\u1ee3i alumina l\u00e0 alumina (Al2O3), v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ee5 tr\u1ee3 l\u00e0 SiO2<\/a>, B2O3, MgO, v.v. N\u00f3 l\u00e0 s\u1ee3i v\u00f4 c\u01a1 hi\u1ec7u su\u1ea5t cao v\u00e0 s\u1ee3i g\u1ed1m \u0111a tinh th\u1ec3 v\u1edbi nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau nh\u01b0 s\u1ee3i d\u00e0i, s\u1ee3i ng\u1eafn, v\u00e0 r\u00e2u ria. N\u00f3 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh tuy\u1ec7t v\u1eddi nh\u01b0 \u0111\u1ed9 b\u1ec1n cao, m\u00f4 \u0111un cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n

L\u0129nh v\u1ef1c \u1ee9ng d\u1ee5ng c\u1ee7a s\u1ee3i Al2O3 t\u01b0\u01a1ng \u0111\u1ed1i r\u1ed9ng. S\u1ee3i ng\u1eafn Al2O3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi nh\u1ef1a, kim lo\u1ea1i ho\u1eb7c g\u1ed1m \u0111\u1ec3 ch\u1ebf t\u1ea1o v\u1eadt li\u1ec7u composite hi\u1ec7u su\u1ea5t cao v\u00e0 s\u1ea3n xu\u1ea5t c\u00e1c l\u00f2 nung nhi\u1ec7t \u0111\u1ed9 cao c\u00f4ng nghi\u1ec7p nh\u01b0 l\u00f2 nung, l\u00f3t l\u00f2 v\u00e0 l\u00f2 nung linh ki\u1ec7n \u0111i\u1ec7n t\u1eed; V\u1eadt li\u1ec7u composite gia c\u1ed1 s\u1ee3i li\u00ean t\u1ee5c Al2O3 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh tuy\u1ec7t v\u1eddi nh\u01b0 c\u01b0\u1eddng \u0111\u1ed9 cao, m\u00f4 \u0111un cao v\u00e0 \u0111\u1ed9 c\u1ee9ng cao. Ma tr\u1eadn c\u1ee7a n\u00f3 kh\u00f4ng d\u1ec5 b\u1ecb oxy h\u00f3a v\u00e0 h\u01b0 h\u1ecfng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. N\u00f3 c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e3o tuy\u1ec7t v\u1eddi v\u00e0 s\u1ebd kh\u00f4ng g\u00e2y ra s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a h\u1ea1t \u1edf nhi\u1ec7t \u0111\u1ed9 cao khi\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a ch\u1ea5t x\u01a1 b\u1ecb gi\u1ea3m. N\u00f3 \u0111\u01b0\u1ee3c qu\u1ed1c t\u1ebf c\u00f4ng nh\u1eadn l\u00e0 th\u1ebf h\u1ec7 v\u1eadt li\u1ec7u ch\u00ednh m\u1edbi cho c\u00e1c b\u1ed9 ph\u1eadn \u0111\u1ea7u n\u00f3ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00f3 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n r\u1ea5t l\u1edbn; Ngo\u00e0i c\u00e1c \u0111\u1eb7c t\u00ednh tr\u00ean, s\u1ee3i nano Al2O3 ch\u1ee9c n\u0103ng c\u00f2n c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh \u01b0u vi\u1ec7t nh\u01b0 \u0111\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p, c\u00e1ch \u0111i\u1ec7n v\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang cao. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong v\u1eadt li\u1ec7u composite gia c\u1ed1, v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t \u1edf nhi\u1ec7t \u0111\u1ed9 cao, v\u1eadt li\u1ec7u l\u1ecdc x\u00fac t\u00e1c, v.v.<\/p>\n

Alumina c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao<\/p>\n

Alumina c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao (4N tr\u1edf l\u00ean) c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 \u0111\u1ed9 tinh khi\u1ebft cao, \u0111\u1ed9 c\u1ee9ng cao, \u0111\u1ed9 b\u1ec1n cao, ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao, ch\u1ed1ng m\u00e0i m\u00f2n, c\u00e1ch nhi\u1ec7t t\u1ed1t, t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u1ed5n \u0111\u1ecbnh, hi\u1ec7u su\u1ea5t co ng\u00f3t \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u1eeba ph\u1ea3i, hi\u1ec7u su\u1ea5t thi\u00eau k\u1ebft t\u1ed1t v\u00e0 quang, \u0111i\u1ec7n , t\u00ednh ch\u1ea5t t\u1eeb, nhi\u1ec7t v\u00e0 c\u01a1 h\u1ecdc m\u00e0 b\u1ed9t alumina th\u00f4ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 s\u00e1nh \u0111\u01b0\u1ee3c. N\u00f3 l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u cao c\u1ea5p c\u00f3 gi\u00e1 tr\u1ecb gia t\u0103ng cao nh\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong ng\u00e0nh h\u00f3a ch\u1ea5t hi\u1ec7n \u0111\u1ea1i.<\/p>\n

Hi\u1ec7n nay, alumina c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao cao c\u1ea5p ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ph\u1ee5 gia \u0111i\u1ec7n c\u1ef1c pin lithium, ch\u1ea5t \u0111i\u1ec7n ph\u00e2n pin th\u1ec3 r\u1eafn, m\u00e0i v\u00e0 \u0111\u00e1nh b\u00f3ng wafer trong ng\u00e0nh c\u00f4ng nghi\u1ec7p b\u00e1n d\u1eabn.<\/p>\n

alumina h\u00ecnh c\u1ea7u<\/p>\n

H\u00ecnh th\u00e1i c\u1ee7a c\u00e1c h\u1ea1t b\u1ed9t alumina s\u1ebd \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong nhi\u1ec1u l\u0129nh v\u1ef1c. So v\u1edbi c\u00e1c h\u1ea1t b\u1ed9t alumina kh\u00f4ng \u0111\u1ec1u, d\u1ea1ng s\u1ee3i ho\u1eb7c d\u1ea1ng bong tr\u00f3c th\u00f4ng th\u01b0\u1eddng, alumina h\u00ecnh c\u1ea7u c\u00f3 h\u00ecnh th\u00e1i \u0111\u1ec1u \u0111\u1eb7n, m\u1eadt \u0111\u1ed9 \u0111\u00f3ng g\u00f3i cao h\u01a1n, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang nh\u1ecf h\u01a1n v\u00e0 t\u00ednh l\u01b0u \u0111\u1ed9ng t\u1ed1t h\u01a1n. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i l\u00e0m v\u1eadt li\u1ec7u l\u00e0m \u0111\u1ea7y d\u1eabn nhi\u1ec7t, v\u1eadt li\u1ec7u \u0111\u00e1nh b\u00f3ng, ch\u1ea5t mang x\u00fac t\u00e1c, v\u1eadt li\u1ec7u ph\u1ee7 b\u1ec1 m\u1eb7t, v.v.<\/p>\n","protected":false},"excerpt":{"rendered":"

Alumina m\u1ecbn c\u00f3 nhi\u1ec1u lo\u1ea1i v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. N\u00f3 l\u00e0 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u01b0a th\u00edch trong nhi\u1ec1u l\u0129nh v\u1ef1c.<\/p>\n","protected":false},"author":7,"featured_media":132758,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-132797","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\/132797"}],"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=132797"}],"version-history":[{"count":1,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/132797\/revisions"}],"predecessor-version":[{"id":132798,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/132797\/revisions\/132798"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/132758"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=132797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=132797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=132797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}