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Ultrahigh-purity aluminum oxide ceramic metallization method

A high-purity alumina and ceramic metallization technology, applied in the field of electronic functional ceramic materials, can solve the problems of poor thermal conductivity and air tightness, low strength of ceramic matrix, etc., and achieve strong permeability and good metallization tensile strength performance. , good peeling effect

Inactive Publication Date: 2020-08-18
宜宾红星电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the problems of low ceramic matrix strength, poor thermal conductivity and air tightness caused by the metallization and sintering process of alumina ceramics

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 adopts the method of the present invention to carry out metallization to alumina ceramics

[0044] The specific steps are:

[0045] a. Weigh Al 2 o 3 0.4kg, SiO 2 0.5kg, CaO 0.02kg, MgO 0.05kg and Y 2 o 3 0.03kg; of which SiO 2 Powder particle size D 50 ≤0.5μm, Al 2 o 3 , CaO, MgO, Y 2 o 3 The particle size is ≤1μm; the raw material powder is analytically pure;

[0046] Put the above-mentioned raw material powder into a ball mill, weigh 1kg of alcohol, Put 2kg of alumina ceramic balls into the ball mill and mill for 12 hours. Pour the slurry into a stainless steel basin, put it in an oven at 80°C, and dry it to make a metallized slurry additive for later use.

[0047] b. Preparation of metallized powder:

[0048] Weigh 0.26kg of molybdenum powder, 0.012kg of molybdenum trioxide powder, 0.02kg of manganese powder, and 0.108kg of metallized slurry additive to mix to obtain powder, and add 0.4 kg of agate ceramic balls were ball milled, and...

Embodiment 2

[0054] Embodiment 2 adopts the method of the present invention to carry out metallization to alumina ceramics

[0055] The specific steps are:

[0056] a. Weigh Al 2 o 3 0.5kg, SiO 2 0.4kg, CaO 0.02kg, MgO 0.05kg and Y 2 o 3 0.03kg; of which SiO 2 Powder particle size D 50 ≤0.5μm, Al 2 o 3 , CaO, MgO, Y 2 o 3 The particle size is ≤1μm; the raw material powder is analytically pure;

[0057] Put the above-mentioned raw material powder into a ball mill, weigh 1kg of alcohol, Put 2kg of alumina ceramic balls into the ball mill and mill for 12 hours. Pour the slurry into a stainless steel basin, put it in an oven at 80°C, and dry it to make a metallized slurry additive for later use.

[0058] b. Preparation of metallized powder:

[0059] Weigh 0.272kg of molybdenum powder, 0.02kg of molybdenum trioxide powder, 0.032kg of manganese powder, and 0.076kg of metallized slurry additive to mix to obtain powder, and add 0.4 kg of agate ceramic balls were ball milled, an...

Embodiment 3

[0065] Embodiment 3 adopts the method of the present invention to carry out metallization to alumina ceramics

[0066] The specific steps are:

[0067] a. Weigh Al 2 o 3 0.6kg, SiO 2 0.3kg, CaO 0.02kg, MgO 0.05kg and Y 2 o 3 0.03kg; of which SiO 2 Powder particle size D 50 ≤0.5μm, Al 2 o 3 , CaO, MgO, Y 2 o 3 The particle size is ≤1μm; the raw material powder is analytically pure;

[0068] Put the above-mentioned raw material powder into a ball mill, weigh 1kg of alcohol, Put 2kg of alumina ceramic balls into the ball mill and mill for 12 hours. Pour the slurry into a stainless steel basin, put it in an oven at 80°C, and dry it to make a metallized slurry additive for later use.

[0069] b. Preparation of metallized powder:

[0070] Weigh 0.28kg of molybdenum powder, 0.032kg of molybdenum trioxide powder, 0.048kg of manganese powder, and 0.04kg of metallized slurry additive to mix to obtain powder, and add 0.4 kg of agate ceramic balls were ball milled, and...

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Abstract

The invention belongs to the technical field of electronic functional ceramic materials, and particularly relates to an ultrahigh-purity aluminum oxide ceramic metallization method. Aiming at the problems of low strength, poor heat conductivity, and poor air tightness of a ceramic matrix caused by an aluminum oxide ceramic metallization sintering process, the invention provides an ultrahigh-purityaluminum oxide ceramic metallization method. The method comprises the following steps: a, weighing raw material powder, dispersing the raw material powder into alcohol, ball-milling, and drying to prepare a metallized slurry additive; b, mixing molybdenum powder, molybdenum trioxide powder, manganese powder and the metallized slurry additive to obtain powder, and ball-milling the powder to obtainmetallized powder; c, subjecting the metallized powder to vibration grinding to obtain metallized slurry; and d, printing or coating the metallized slurry, and sintering to obtain a metallized product. The sintering temperature of the metallized slurry is lower than an existing sintering temperature, multiple times of metallized sintering can be achieved, the thickness of a metallized layer is increased, and after nickel plating, the metallized layer is good in stripping effect, high in stripping strength and good in metallized tensile strength performance.

Description

technical field [0001] The invention belongs to the technical field of electronic functional ceramic materials, and in particular relates to a method for metallizing ultra-high-purity alumina ceramics. Background technique [0002] With the development of high-power and miniaturized electronic components, alumina ceramics have high volume resistivity, high flexural strength, high hardness, low dielectric loss, small linear expansion coefficient, high insulation performance, and can be welded and sealed with metals. It is widely used in military communication, remote sensing and electronic countermeasures, optoelectronic technology and other fields, and has become indispensable for the production of microelectronic devices (thick, thin film circuits, high-power semiconductor devices) and optoelectronic devices (infrared detection, imaging). important raw material. [0003] At present, there are different metallization methods for alumina ceramics at home and abroad. Among th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88
CPCC04B41/88C04B41/5138C04B41/009
Inventor 罗毅段冰尚华林贵洪
Owner 宜宾红星电子有限公司
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