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Powder for aluminum oxide ceramics nano metallized paste and preparation method thereof

An alumina ceramic and nano-metal technology, which is applied in the field of ceramic metallization, can solve the problems of high energy consumption, unsuitable high-density and high-strength alumina ceramics, etc., and achieves the effects of high bulk density, high activity and high surface energy.

Inactive Publication Date: 2012-08-01
福建泉州万顺捷集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the metallization paste formula and process of the existing Mo-Mn method are not suitable for high-density and high-strength alumina ceramics (density above 3.7), and the metallization temperature of the existing Mo-Mn method is about 1500 ° C. There is a problem of high energy consumption

Method used

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  • Powder for aluminum oxide ceramics nano metallized paste and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) In parts by weight, respectively weigh 700g Mo powder, 120g Mn powder and Al 2 O 3 85g of powder, SiO 2 Powder 35g, MgO powder 30g, CaO powder 10g and ZrO 2 20g of powder, among them, the d of Mo powder level 1.5~2.5μm, d of Mn powder level 2~3μm, Al 2 O 3 Powder, SiO 2 Powder, MgO powder, CaO powder and ZrO 2 Pink d max ≤5μm, and Al 2 O 3 The powder contains 0.95g of nano Al 2 O 3 Powder: Dry the weighed powder in an oven with a temperature of 80°C and a drying time of 2 hours;

[0030] 2) Put the dried powder into the ball milling tank, and at the same time add 1.8g castor oil and 450g of absolute ethanol to the ball milling tank to obtain a suspension, and place the ball milling tank in an ordinary ball mill at 40 rpm. After 20 hours of minute ball milling, ball mill at 450 rpm in a planetary ball mill for 5 hours to mill the above suspension evenly;

[0031] 3) The suspension after ball milling is placed in ultrasonic for 25 minutes to vibrate, so that the metalized p...

Embodiment 2

[0040] 1) Weigh 650g Mo powder, 130g Mn powder, Al 2 O 3 Powder 120g, SiO 2 Powder 25g, MgO powder 5g, CaO powder 50g and ZriO 2 20g of powder, among them, the d of Mo powder level 1.5~2.5μm, d of Mn powder level 2~3μm, Al 2 O 3 Powder, SiO 2 Powder, MgO powder, CaO powder and TiO 2 Pink d max ≤5μm, and Al 2 O 3 The powder contains 1.5g of nano Al 2 O 3 Powder: Dry the weighed powder in an oven with a temperature of 70°C and a drying time of 3 hours;

[0041] 2) Add the dried powder to the ball mill, and at the same time add 1.1g castor oil and 495g of absolute ethanol to the ball mill to obtain a suspension. Place the ball mill in an ordinary ball mill at 35 rpm. After 24 hours of minute ball milling, ball mill at 400 rpm for 6 hours in a planetary ball mill to uniformly ball mill the above suspension;

[0042] 3) The suspension after ball milling is placed in ultrasonic for 30 minutes to vibrate, so that the metalized powder can be uniformly mixed in the solution and dispersed we...

Embodiment 3

[0051] 1) In parts by weight, respectively weigh 800g Mo powder, 120g Mn powder and Al 2 O 3 80g powder, SiO 2 Powder 70g, MgO powder 10g, CaO powder 10g and ZrO 2 10g of powder, among them, the d of Mo powder level 1.5~2.5μm, d of Mn powder level 2~3μm, Al 2 O 3 Powder, SiO 2 Powder, MgO powder, CaO powder and TiO 2 Pink d max ≤5μm, and Al 2 O 3 The powder contains 2g of nano Al 2 O 3 Powder: Dry the weighed powder in an oven with a temperature of 85°C and a drying time of 1.5 hours;

[0052] 2) Add the dried powder to the ball mill, and at the same time add 5g castor oil and 550g of absolute ethanol to the ball mill to obtain a suspension. Place the ball mill in a common ball mill at 30 revolutions per minute. After 28 hours of ball milling, ball mill at 350 rpm for 7 hours in a planetary ball mill to uniformly ball mill the above suspension;

[0053] 3) Place the ball-milled suspension in an ultrasonic wave for 35 minutes to vibrate, so that the metalized powder is uniformly mix...

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Abstract

The invention provides powder for aluminum oxide ceramics nano metallized paste and a preparation method thereof. The powder for the aluminum oxide ceramics nano metallized paste mainly comprises the following components in part by weight: 65 to 80 parts of Mo powder, 12 to 14 parts of Mn powder, 8 to 12 parts of Al2O3 powder, 2.5 to 7.0 parts of SiO2 powder, 0.5 to 3 parts of MgO powder, 1 to 5 parts of CaO and 1 to 2 parts of ZrO2 powder, wherein the Al2O3 powder consists of nano Al2O3 powder, submicron Al2O3 powder and micron Al2O3 powder. By using the powder for the paste provided by the invention, a ceramics metallization layer with high sintered density, air tightness and tensile strength of joints can be obtained, and sintering temperature is reduced at the same time.

Description

Technical field [0001] The invention relates to the technical field of ceramic metallization, in particular to a paste composition for forming alumina ceramic nano-metallization and a preparation method thereof. Background technique [0002] Alumina ceramics have good wear resistance, corrosion resistance and high temperature resistance. They can be used for a long time at 1600℃. In addition, alumina ceramics also have good electrical insulation properties, especially at high frequencies. Outstanding, withstand voltage of more than 15000V per millimeter thickness. Table 1 lists several commonly used Al 2 O 3 Physical properties of ceramics. [0003] Table 1 Several commonly used Al 2 O 3 Physical properties of ceramics [0004] [0005] In view of the above characteristics of alumina ceramics, the metallization technology of alumina ceramics occupies a very important position in the electronics industry. Alumina ceramics with metallized layers not only have many excellent properties...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C04B41/88
Inventor 高陇桥苏国平
Owner 福建泉州万顺捷集团有限公司