{"id":954,"date":"2023-09-06T07:11:15","date_gmt":"2023-09-06T07:11:15","guid":{"rendered":"https:\/\/tac-industry.com\/?p=954"},"modified":"2025-09-25T07:03:29","modified_gmt":"2025-09-25T07:03:29","slug":"nhom-la-gi-cung-tac-tim-hieu-tong-quat-ve-nhom","status":"publish","type":"post","link":"https:\/\/tac-industry.com\/en\/nhom-la-gi-cung-tac-tim-hieu-tong-quat-ve-nhom\/","title":{"rendered":"NH\u00d4M L\u00c0 G\u00cc? C\u00d9NG TAC T\u00ccM HI\u1ec2U T\u1ed4NG QU\u00c1T V\u1ec0 NH\u00d4M"},"content":{"rendered":"

Nh\u00f4m l\u00e0 m\u1ed9t kim lo\u1ea1i nh\u1eb9, c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t. V\u1edbi t\u00ednh n\u0103ng n\u00e0y, nh\u00f4m \u0111\u00e3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, t\u1eeb x\u00e2y d\u1ef1ng \u0111\u1ebfn \u00f4 t\u00f4 v\u00e0 h\u00e0ng kh\u00f4ng. Nh\u00f4m c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m gia d\u1ee5ng v\u00e0 \u0111\u1ed3 trang s\u1ee9c. V\u1edbi \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng v\u00e0 t\u00ednh ch\u1ea5t v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a m\u00ecnh, nh\u00f4m \u0111\u00e3 chi\u1ebfm \u0111\u01b0\u1ee3c l\u00f2ng tin c\u1ee7a c\u00e1c doanh nghi\u1ec7p v\u00e0 ng\u01b0\u1eddi ti\u00eau d\u00f9ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft v\u1ec1 nh\u00f4m, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 kim lo\u1ea1i quan tr\u1ecdng n\u00e0y.<\/em><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

1. Nh\u00f4m l\u00e0 v\u1eadt li\u1ec7u g\u00ec v\u00e0 c\u00f3 ngu\u1ed3n g\u1ed1c xu\u1ea5t x\u1ee9 t\u1eeb \u0111\u00e2u?<\/h2>\n\n\n\n

Nh\u00f4m (Aluminium, k\u00fd hi\u1ec7u Al, s\u1ed1 nguy\u00ean t\u1eed 13) l\u00e0 kim lo\u1ea1i nh\u1eb9, m\u00e0u tr\u1eafng b\u1ea1c v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang \u2248 2,70 g\/cm\u00b3, tr\u1ecdng l\u01b0\u1ee3ng ch\u1ec9 b\u1eb1ng kho\u1ea3ng 1\/3 so v\u1edbi th\u00e9p c\u00f9ng k\u00edch th\u01b0\u1edbc. Nh\u1edd l\u1edbp oxide t\u1ef1 h\u00ecnh th\u00e0nh tr\u00ean b\u1ec1 m\u1eb7t (Al\u2082O\u2083), nh\u00f4m c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t trong kh\u00f4ng kh\u00ed v\u00e0 m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc \u2014 \u0111i\u1ec1u n\u00e0y gi\u00fap n\u00f3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu kh\u1eafc nghi\u1ec7t.<\/p>\n\n\n\n

Nh\u1edd v\u00e0o nhi\u1ec1u \u0111\u1eb7c t\u00ednh n\u1ed5i tr\u1ed9i, nh\u00f4m l\u00e0 m\u1ed9t trong nh\u1eefng kim lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c nh\u01b0 x\u00e2y d\u1ef1ng, h\u00e0ng kh\u00f4ng, c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4, \u0111\u00f3ng t\u00e0u, s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed v\u00e0 \u0111\u1ed3 gia d\u1ee5ng, c\u00f4ng nghi\u1ec7p n\u0103ng l\u01b0\u1ee3ng,\u2026<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Nh\u00f4m l\u00e0 m\u1ed9t kim lo\u1ea1i c\u00f3 ngu\u1ed3n g\u1ed1c t\u1ef1 nhi\u00ean v\u00e0 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y r\u1ed9ng r\u00e3i tr\u00ean Tr\u00e1i \u0110\u1ea5t<\/em><\/p>\n\n\n\n

2. \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a nh\u00f4m<\/h2>\n\n\n\n

Khi \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a Nh\u00f4m, th\u01b0\u1eddng nh\u1eafc \u0111\u1ebfn 3 y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n l\u00e0 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc v\u00e0 tr\u1ea1ng th\u00e1i t\u1ef1 nhi\u00ean c\u1ee7a kim lo\u1ea1i n\u00e0y.<\/p>\n\n\n\n

T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a nh\u00f4m<\/h3>\n\n\n\n

Nh\u00f4m l\u00e0 m\u1ed9t kim lo\u1ea1i nh\u1eb9, c\u00f3 m\u00e0u tr\u1eafng b\u1ea1c v\u00e0 c\u00f3 \u0111\u1ed9 b\u1ec1n cao. D\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n th\u00f4ng th\u01b0\u1eddng, nh\u00f4m kh\u00f4ng b\u1ecb \u0103n m\u00f2n do kh\u00f4ng kh\u00ed hay n\u01b0\u1edbc. \u0110i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a nh\u00f4m l\u00e0 kho\u1ea3ng 660 \u0111\u1ed9 Celsius v\u00e0 \u0111i\u1ec3m s\u00f4i l\u00e0 kho\u1ea3ng 2.470 \u0111\u1ed9 Celsius.<\/p>\n\n\n\n

Nh\u00f4m c\u00f3 t\u00ednh d\u1eabn \u0111i\u1ec7n v\u00e0 d\u1eabn nhi\u1ec7t t\u1ed1t, v\u00ec v\u1eady n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n t\u1eed v\u00e0 x\u00e2y d\u1ef1ng. Ngo\u00e0i ra, nh\u00f4m c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng t\u1ed1t, do \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c s\u1ea3n xu\u1ea5t g\u01b0\u01a1ng v\u00e0 c\u00e1c v\u1eadt li\u1ec7u ph\u1ea3n quang.<\/p>\n\n\n\n

M\u1ed9t t\u00ednh ch\u1ea5t quan tr\u1ecdng kh\u00e1c c\u1ee7a nh\u00f4m l\u00e0 t\u00ednh linh ho\u1ea1t. Nh\u00f4m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u00e9o gi\u00e3n th\u00e0nh c\u00e1c l\u00e1 m\u1ecfng ho\u1eb7c \u00e9p th\u00e0nh c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p m\u00e0 kh\u00f4ng g\u00e2y suy y\u1ebfu c\u1ea5u tr\u00fac c\u1ee7a n\u00f3.<\/p>\n\n\n\n

Tuy nhi\u00ean, nh\u00f4m c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf. N\u00f3 kh\u00f4ng ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao v\u00e0 \u00edt c\u1ee9ng c\u00e1p so v\u1edbi c\u00e1c kim lo\u1ea1i kh\u00e1c nh\u01b0 th\u00e9p. Ngo\u00e0i ra, khi ti\u1ebfp x\u00fac v\u1edbi axit m\u1ea1nh, nh\u00f4m c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n.<\/p>\n\n\n\n

\u0110\u1eb7c bi\u1ec7t, nh\u00f4m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i ch\u1ebf v\u00e0 s\u1eed d\u1ee5ng nhi\u1ec1u l\u1ea7n m\u00e0 kh\u00f4ng m\u1ea5t \u0111i t\u00ednh ch\u1ea5t ban \u0111\u1ea7u. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ea3n xu\u1ea5t nh\u00f4m \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng, gi\u1ea3m thi\u1ec3u l\u01b0\u1ee3ng ch\u1ea5t th\u1ea3i v\u00e0 ti\u1ebft ki\u1ec7m t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean.<\/p>\n\n\n\n

T\u00ednh ch\u1ea5t<\/th>Gi\u00e1 tr\u1ecb<\/th>So s\u00e1nh<\/th><\/tr><\/thead>
Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang<\/td>2,70 g\/cm\u00b3<\/td>Th\u1ea5p h\u01a1n th\u00e9p (7,85 g\/cm\u00b3)<\/td><\/tr>
\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td>660,3 \u00b0C<\/td>Th\u1ea5p h\u01a1n s\u1eaft (1.538 \u00b0C)<\/td><\/tr>
\u0110i\u1ec3m s\u00f4i<\/td>2.470 \u00b0C<\/td><\/td><\/tr>
\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td>~60% \u0111\u1ed3ng<\/td>\u0110\u1ee7 d\u00f9ng cho d\u00e2y d\u1eabn, ti\u1ebft ki\u1ec7m chi ph\u00ed<\/td><\/tr>
\u0110\u1ed9 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/td>Cao<\/td>D\u00f9ng l\u00e0m g\u01b0\u01a1ng ph\u1ea3n chi\u1ebfu, t\u1ea5m c\u00e1ch nhi\u1ec7t<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

M\u1ed9t t\u00ednh ch\u1ea5t quan tr\u1ecdng kh\u00e1c c\u1ee7a nh\u00f4m l\u00e0 t\u00ednh linh ho\u1ea1t.<\/em><\/p>\n\n\n\n

T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc:<\/strong><\/h3>\n\n\n\n

Nh\u00f4m d\u1ec5 b\u1ecb oxy h\u00f3a, nh\u01b0ng l\u1edbp m\u00e0ng Al\u2082O\u2083 m\u1ecfng<\/strong> t\u1ea1o ra ngay tr\u00ean b\u1ec1 m\u1eb7t gi\u00fap n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ef1 nhi\u00ean<\/strong>. \u0110\u00e2y l\u00e0 l\u00fd do v\u00ec sao nh\u00f4m b\u1ec1n b\u1ec9 trong m\u00f4i tr\u01b0\u1eddng kh\u00ed h\u1eadu \u1ea9m, m\u1eb7n.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Nh\u00f4m l\u00e0 kim lo\u1ea1i c\u00f3 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u1eb7c bi\u1ec7t.<\/em><\/p>\n\n\n\n

3. Nh\u00f4m \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o trong \u0111\u1eddi s\u1ed1ng hi\u1ec7n nay<\/h2>\n\n\n\n

Nh\u00f4m l\u00e0 m\u1ed9t kim lo\u1ea1i nh\u1eb9, d\u1ebbo v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao. Do \u0111\u00f3, n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c trong \u0111\u1eddi s\u1ed1ng hi\u1ec7n nay. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a nh\u00f4m:<\/p>\n\n\n\n

Ng\u00e0nh x\u00e2y d\u1ef1ng: Nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u1eeda, c\u1eeda s\u1ed5, v\u00e1ch ng\u0103n v\u00e0 h\u1ec7 th\u1ed1ng c\u1ea5p tho\u00e1t n\u01b0\u1edbc trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng. V\u1edbi t\u00ednh ch\u1ea5t nh\u1eb9 v\u00e0 b\u1ec1n, nh\u00f4m gi\u00fap t\u1ea1o ra c\u00e1c k\u1ebft c\u1ea5u nh\u1eb9 v\u00e0 b\u1ec1n v\u1eefng.<\/p>\n\n\n\n

Ng\u00e0nh h\u00e0ng kh\u00f4ng v\u00e0 kh\u00f4ng gian: Nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c th\u00e0nh ph\u1ea7n m\u00e1y bay, t\u00e0u v\u0169 tr\u1ee5 v\u00e0 t\u00ean l\u1eeda do t\u00ednh ch\u1ea5t nh\u1eb9 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p su\u1ea5t cao.<\/p>\n\n\n\n

\u0110\u1ed3 gia d\u1ee5ng: Nhi\u1ec1u s\u1ea3n ph\u1ea9m gia \u0111\u00ecnh t\u1eeb \u0111i\u1ec7n t\u1eed cho \u0111\u1ebfn \u0111\u1ed3 gia d\u1ee5ng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb nh\u00f4m ho\u1eb7c h\u1ee3p kim nh\u00f4m. V\u00ed d\u1ee5 bao g\u1ed3m qu\u1ea1t m\u00e1y, \u1ea5m \u0111i\u1ec7n, xoong-n\u1ed3i,…<\/p>\n\n\n\n

\u0110\u00f3ng t\u00e0u: Nh\u00f4m c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao khi ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc bi\u1ec3n, do \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh \u0111\u00f3ng t\u00e0u \u0111\u1ec3 l\u00e0m c\u00e1c th\u00e0nh ph\u1ea7n nh\u01b0 th\u00e2n t\u00e0u, c\u1eeda s\u1ed5 v\u00e0 h\u1ec7 th\u1ed1ng tho\u00e1t n\u01b0\u1edbc.<\/p>\n\n\n\n

\u0110i\u1ec7n t\u1eed: Nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t c\u00e1c b\u1ed9 ph\u1eadn \u0111i\u1ec7n t\u1eed nh\u01b0 vi m\u1ea1ch, \u1ed1c v\u00edt v\u00e0 v\u1ecf m\u00e1y t\u00ednh do kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n t\u1ed1t.<\/p>\n\n\n\n

Bao b\u00ec: Nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m h\u1ed9p \u0111\u1ef1ng th\u1ef1c ph\u1ea9m, lon \u0111\u1ed3 u\u1ed1ng v\u00e0 t\u00fai ch\u1ed1ng ch\u00e1y.<\/p>\n\n\n\n

\u00d4 t\u00f4: Nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4 \u0111\u1ec3 gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng xe v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t nhi\u00ean li\u1ec7u.<\/p>\n\n\n\n

N\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o: Nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a pin m\u1eb7t tr\u1eddi v\u00e0 h\u1ec7 th\u1ed1ng thu s\u00f3ng m\u1eb7t tr\u1eddi do kh\u1ea3 n\u0103ng ch\u1ecbu \u0103n m\u00f2n cao v\u00e0 t\u00ednh nh\u1eb9 c\u1ee7a n\u00f3.<\/p>\n\n\n\n

\u0110\u00e2y ch\u1ec9 l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 c\u00e1ch nh\u00f4m \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta. T\u00ednh linh ho\u1ea1t, kh\u1ea3 n\u0103ng t\u00e1i ch\u1ebf cao v\u00e0 chi ph\u00ed s\u1ea3n xu\u1ea5t th\u1ea5p \u0111\u00e3 khi\u1ebfn cho nh\u00f4m tr\u1edf th\u00e0nh m\u1ed9t v\u1eadt li\u1ec7u quan tr\u1ecdng trong r\u1ea5t nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

C\u00e1c lo\u1ea1i nh\u00f4m & h\u1ee3p kim ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n