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High temperature creep-resistant flake alumina porous ceramic used for LED lamp heat dissipation, and preparation method thereof
The invention discloses a high temperature creep-resistant flake alumina porous ceramic used for LED lamp heat dissipation. The flake alumina porous ceramic is prepared from, by weight, 34 to 36 parts of alpha-Al2O3 (particle size ranging from 2 to 8m), 100 to 105 parts of deionized water, 0.2 to 0.3 part of sodium polyacrylate, 2 to 2.3 parts of methylcellulose, 1.6 to 1.8 parts of glycerin, 1.3 to 1.8 parts of yttrium aluminum garnet fiber, 0.6 to 0.8 part of nanometer tin dioxide, 0.3 to 0.5 part of tantalum nitride, 1.5 to 1.8 parts of silicon-calcium-barium alloy powder, 4 to 5 parts of nano-aluminium hydroxide, 1.2 to 1.5 parts of nano-copper, and 0.9 to 1.1 parts of PVA binder. According to the preparation method, yttrium aluminum garnet fiber, nanometer tin dioxide, and tantalum nitride are added, so that oxidation resistance, high temperature resistance, high temperature creep resistance, and thermal conductivity of ceramic are improved; silicon-calcium-barium alloy powder is added, so that recombination property with metal is improved, and thermal conductivity is increased.
High temperature creep-resistant flake alumina porous ceramic used for LED lamp heat dissipation, and preparation method thereof
The invention discloses a high temperature creep-resistant flake alumina porous ceramic used for LED lamp heat dissipation. The flake alumina porous ceramic is prepared from, by weight, 34 to 36 parts of alpha-Al2O3 (particle size ranging from 2 to 8m), 100 to 105 parts of deionized water, 0.2 to 0.3 part of sodium polyacrylate, 2 to 2.3 parts of methylcellulose, 1.6 to 1.8 parts of glycerin, 1.3 to 1.8 parts of yttrium aluminum garnet fiber, 0.6 to 0.8 part of nanometer tin dioxide, 0.3 to 0.5 part of tantalum nitride, 1.5 to 1.8 parts of silicon-calcium-barium alloy powder, 4 to 5 parts of nano-aluminium hydroxide, 1.2 to 1.5 parts of nano-copper, and 0.9 to 1.1 parts of PVA binder. According to the preparation method, yttrium aluminum garnet fiber, nanometer tin dioxide, and tantalum nitride are added, so that oxidation resistance, high temperature resistance, high temperature creep resistance, and thermal conductivity of ceramic are improved; silicon-calcium-barium alloy powder is added, so that recombination property with metal is improved, and thermal conductivity is increased.
High temperature creep-resistant flake alumina porous ceramic used for LED lamp heat dissipation, and preparation method thereof
DONG ZHAOHAI (Autor:in)
02.12.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2015