{"id":129302,"date":"2023-10-09T17:01:04","date_gmt":"2023-10-09T09:01:04","guid":{"rendered":"https:\/\/www.alpapowder.com\/129302\/"},"modified":"2023-10-09T17:01:05","modified_gmt":"2023-10-09T09:01:05","slug":"gom-su-silicon-nitride-nguoi-dan-dau-trong-bon-linh-vuc-chinh","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/129302\/","title":{"rendered":"G\u1ed1m s\u1ee9 silicon nitride \u2013 \u201cng\u01b0\u1eddi d\u1eabn \u0111\u1ea7u\u201d trong b\u1ed1n l\u0129nh v\u1ef1c ch\u00ednh"},"content":{"rendered":"
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Silicon nitride (Si3N4) l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t li\u00ean k\u1ebft c\u1ed9ng h\u00f3a tr\u1ecb bao g\u1ed3m silicon v\u00e0 nit\u01a1. N\u00f3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u00e0o n\u0103m 1857 v\u00e0 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t d\u01b0\u1edbi d\u1ea1ng v\u1eadt li\u1ec7u g\u1ed1m v\u00e0o n\u0103m 1955. G\u1ed1m silicon<\/a> nitride c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m m\u00e0 v\u1eadt li\u1ec7u kim lo\u1ea1i v\u00e0 v\u1eadt li\u1ec7u polymer kh\u00f4ng c\u00f3, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao (\u0111\u1ed9 b\u1ec1n u\u1ed1n c\u00f3 th\u1ec3 \u0111\u1ea1t h\u01a1n 350MPa \u1edf 1200\u00b0C ), ch\u1ed1ng \u0103n m\u00f2n axit v\u00e0 ki\u1ec1m, t\u1ef1 b\u00f4i tr\u01a1n, v.v., v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, qu\u1ed1c ph\u00f2ng v\u00e0 qu\u00e2n s\u1ef1. , \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c c\u01a1 kh\u00ed.<\/p>\n L\u0129nh v\u1ef1c c\u01a1 kh\u00ed<\/p>\n G\u1ed1m silicon<\/a> nitride ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p m\u00e1y m\u00f3c nh\u01b0 van, \u0111\u01b0\u1eddng \u1ed1ng, b\u00e1nh xe ph\u00e2n lo\u1ea1i v\u00e0 d\u1ee5ng c\u1ee5 c\u1eaft g\u1ed1m. C\u00e1c qu\u1ea3 b\u00f3ng mang g\u1ed1m silicon<\/a> nitride \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t l\u00e0 nh\u1eefng qu\u1ea3 b\u00f3ng mang g\u1ed1m silicon nitride.<\/p>\n B\u00f3ng mang silicon<\/a> nitride c\u00f3 th\u1ec3 quay t\u1edbi 600.000 v\u00f2ng\/ph\u00fat trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. Ch\u00fang ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong tr\u1ee5c m\u00e1y c\u00f4ng c\u1ee5 ch\u00ednh x\u00e1c, v\u00f2ng bi t\u1ed1c \u0111\u1ed9 cao cho tr\u1ee5c \u0111i\u1ec7n, \u0111\u1ed9ng c\u01a1 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, v\u00f2ng bi \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 v\u00e0 v\u00f2ng bi thi\u1ebft b\u1ecb kh\u00e1c.<\/p>\n Bi g\u1ed1m silicon<\/a> nitride c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi bi th\u00e9p: m\u1eadt \u0111\u1ed9 th\u1ea5p, ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao, t\u1ef1 b\u00f4i tr\u01a1n v\u00e0 ch\u1ed1ng \u0103n m\u00f2n. L\u00e0 m\u1ed9t th\u00e2n quay t\u1ed1c \u0111\u1ed9 cao, qu\u1ea3 b\u00f3ng g\u1ed1m t\u1ea1o ra \u1ee9ng su\u1ea5t ly t\u00e2m v\u00e0 m\u1eadt \u0111\u1ed9 silicon<\/a> nitride th\u1ea5p l\u00e0m gi\u1ea3m \u1ee9ng su\u1ea5t ly t\u00e2m \u1edf v\u00f2ng ngo\u00e0i c\u1ee7a th\u00e2n quay t\u1ed1c \u0111\u1ed9 cao. G\u1ed1m Si3N4 d\u00e0y \u0111\u1eb7c c\u0169ng th\u1ec3 hi\u1ec7n \u0111\u1ed9 b\u1ec1n g\u00e3y cao, \u0111\u1eb7c t\u00ednh m\u00f4 \u0111un cao v\u00e0 \u0111\u1eb7c t\u00ednh t\u1ef1 b\u00f4i tr\u01a1n, \u0111\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 ch\u1ed1ng l\u1ea1i nhi\u1ec1u lo\u1ea1i m\u00e0i m\u00f2n v\u00e0 ch\u1ecbu \u0111\u1ef1ng m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t c\u00f3 th\u1ec3 khi\u1ebfn c\u00e1c v\u1eadt li\u1ec7u g\u1ed1m kh\u00e1c b\u1ecb n\u1ee9t, bi\u1ebfn d\u1ea1ng ho\u1eb7c s\u1ee5p \u0111\u1ed5, bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 l\u1edbn , \u0110\u1ed9 ch\u00e2n kh\u00f4ng c\u1ef1c cao. V\u00f2ng bi silicon<\/a> nitride d\u1ef1 ki\u1ebfn s\u1ebd \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau.<\/p>\n Tr\u01b0\u1eddng v\u1eadt li\u1ec7u trong su\u1ed1t s\u00f3ng<\/p>\n G\u1ed1m silicon<\/a> nitride x\u1ed1p c\u00f3 \u0111\u1ed9 b\u1ec1n u\u1ed1n t\u01b0\u01a1ng \u0111\u1ed1i cao v\u00e0 m\u1eadt \u0111\u1ed9 th\u1ea5p h\u01a1n, \u0111\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh cho \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. N\u00f3 c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e3o (so v\u1edbi kim lo\u1ea1i), gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a c\u1ea5u tr\u00fac \u1edf nhi\u1ec7t \u0111\u1ed9 cao. V\u1eadt li\u1ec7u n\u00e0y c\u00f3 nhi\u1ec1u \u0111\u1eb7c t\u00ednh b\u1ed5 sung, bao g\u1ed3m \u0111\u1ed9 c\u1ee9ng, \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n t\u1eeb v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, \u0111\u1ed3ng th\u1eddi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u truy\u1ec1n s\u00f3ng \u0111\u1ec3 ch\u1ebf t\u1ea1o m\u00e1i v\u00f2m v\u00e0 c\u1eeda s\u1ed5 \u0103ng-ten. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p qu\u1ed1c ph\u00f2ng, t\u00ean l\u1eeda \u0111ang ph\u00e1t tri\u1ec3n theo h\u01b0\u1edbng s\u1ed1 Mach cao, d\u1ea3i t\u1ea7n r\u1ed9ng, \u0111a ch\u1ebf \u0111\u1ed9 v\u00e0 d\u1eabn \u0111\u01b0\u1eddng ch\u00ednh x\u00e1c. G\u1ed1m silicon<\/a> nitride v\u00e0 v\u1eadt li\u1ec7u composite c\u1ee7a ch\u00fang c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh tuy\u1ec7t v\u1eddi nh\u01b0 b\u1ea3o v\u1ec7 nhi\u1ec7t, truy\u1ec1n s\u00f3ng v\u00e0 ch\u1ecbu t\u1ea3i, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng th\u1ebf h\u1ec7 v\u1eadt li\u1ec7u trong su\u1ed1t hi\u1ec7u su\u1ea5t cao m\u1edbi \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u.<\/p>\n <\/p>\n Tr\u01b0\u1eddng b\u00e1n d\u1eabn<\/p>\n Ngo\u00e0i c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc tuy\u1ec7t v\u1eddi, g\u1ed1m silicon<\/a> nitride c\u00f2n th\u1ec3 hi\u1ec7n m\u1ed9t lo\u1ea1t c\u00e1c \u0111\u1eb7c t\u00ednh d\u1eabn nhi\u1ec7t tuy\u1ec7t v\u1eddi, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng trong l\u0129nh v\u1ef1c b\u00e1n d\u1eabn \u0111\u00f2i h\u1ecfi kh\u1eaft khe. \u0110\u1ed9 d\u1eabn nhi\u1ec7t l\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n ho\u1eb7c d\u1eabn nhi\u1ec7t v\u1ed1n c\u00f3 c\u1ee7a v\u1eadt li\u1ec7u. Do th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc \u0111\u1ed9c \u0111\u00e1o v\u00e0 c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a silicon<\/a> nitride, n\u00f3 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh to\u00e0n di\u1ec7n tuy\u1ec7t v\u1eddi so v\u1edbi g\u1ed1m alumina v\u00e0 g\u1ed1m nh\u00f4m nitrit.<\/p>\n <\/p>\n L\u0129nh v\u1ef1c g\u1ed1m sinh h\u1ecdc<\/p>\n L\u00e0 m\u1ed9t th\u1ebf h\u1ec7 v\u1eadt li\u1ec7u g\u1ed1m sinh h\u1ecdc m\u1edbi, g\u1ed1m silicon<\/a> nitride kh\u00f4ng ch\u1ec9 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng tuy\u1ec7t v\u1eddi c\u1ee7a v\u1eadt li\u1ec7u g\u1ed1m m\u00e0 c\u00f2n c\u00f3 \u0111\u1eb7c t\u00ednh ch\u1ee5p X quang t\u1ed1t, \u0111\u1eb7c t\u00ednh ch\u1ed1ng nhi\u1ec5m tr\u00f9ng, \u0111\u1eb7c t\u00ednh t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc v\u00e0 \u0111\u1eb7c t\u00ednh t\u00edch h\u1ee3p x\u01b0\u01a1ng.<\/p>\n