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Environmental friendly lead-free aluminum slurry and preparation method thereof

An environment-friendly, aluminum paste technology, applied in the direction of cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc., can solve problems such as lead pollution, achieve high adhesion, small ohmic contact, To achieve the effect of stability

Inactive Publication Date: 2010-09-22
WUHAN YILAI RUIER HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of base metal aluminum paste is still at the level of traditional leaded aluminum paste. There is a problem of lead pollution in the whole process of leaded aluminum paste from production to use and scrapping. Therefore, it is important for people to develop environmentally friendly lead-free aluminum paste. goals and directions

Method used

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  • Environmental friendly lead-free aluminum slurry and preparation method thereof
  • Environmental friendly lead-free aluminum slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] according to figure 1 As shown, a kind of environment-friendly type lead-free aluminum paste comprises: anti-oxidation superfine aluminum alloy powder, silicon barium borate composite glass frit and composite organic carrier, and its component weight percent is as follows:

[0083] Anti-oxidation ultrafine aluminum alloy powder 69

[0084] Silicon barium borate composite glass frit 10.5

[0085] Composite organic vehicle 20.5.

[0086] A preparation method of environment-friendly lead-free aluminum paste, the steps are as follows:

[0087] (1) Preparation of silicon barium borate composite glass frit:

[0088] Its component weight percent is as follows:

[0089] BaCO 3 45.5

[0090] SiO 2 18.2

[0091] B 2 o 3 15

[0092] al 2 o 3 5.5

[0093] ZnO 5

[0094] CaO3

[0095] Li 2 O 7.5

[0096] Y 2 o 3 0.3

[0097] Weigh the above components in proportion, put t...

Embodiment 2

[0135] according to figure 1 As shown, a kind of environment-friendly type lead-free aluminum paste comprises: anti-oxidation superfine aluminum alloy powder, silicon barium borate composite glass frit and composite organic carrier, and its component weight percent is as follows:

[0136] Anti-oxidation ultrafine aluminum alloy powder 65

[0137] Silicon barium borate composite glass frit 12.8

[0138] Composite organic vehicle 22.2.

[0139] A preparation method of environment-friendly lead-free aluminum paste, the steps are as follows:

[0140] (1) Preparation of silicon barium borate composite glass frit:

[0141] Its component weight percent is as follows:

[0142] BaO35

[0143] SiO 2 28.5

[0144] B 2 o 3 18.2

[0145] MgO6.8

[0146] Bi 2 o 3 5

[0147] Stabilizer 6

[0148] Regulator 0.5

[0149] The regulator is Li 2 O and Na 2 O, Li 2 O and Na 2 The mixing weight ratio of O is 2:1;

[0150] The stabilizer is Ce 2 o 3 ...

Embodiment 3

[0189] according to figure 1 As shown, a kind of environment-friendly type lead-free aluminum paste comprises: anti-oxidation superfine aluminum alloy powder, silicon barium borate composite glass frit and composite organic carrier, and its component weight percent is as follows:

[0190] Antioxidant ultrafine aluminum alloy powder 70

[0191] Silicon barium borate composite glass frit 11.5

[0192] Composite organic vehicle 18.5.

[0193] A preparation method of environment-friendly lead-free aluminum paste, the steps are as follows:

[0194] (1) Preparation of silicon barium borate composite glass frit:

[0195] Its component weight percent is as follows:

[0196] BaO 32.5

[0197] SiO 2 20.3

[0198] B 2 o 3 15.5

[0199] al 2 o 3 4.1

[0200] Bi 2 o 3 20.2

[0201] ZnO 5.3

[0202] Regulator 1.9

[0203] Stabilizer 0.2

[0204] The regulator is K 2 O, Na 2 O, K 2 O and Na 2...

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Abstract

The invention relates to an environmental friendly lead-free aluminum slurry and a preparation method thereof. The environmental friendly lead-free aluminum slurry comprises the following components: antioxidant ultrafine aluminum alloy micropowder, barium ferrosilicon borate composite frit and a composite organic carrier. The invention has the advantages that the prepared lead-free aluminum slurry is an environmental friendly electronic slurry without harmful substances including lead, cadmium, mercury and hexavalent chromium, is used as a function material, completely replaces lead containing aluminum slurry, is stable and reliable, and has excellent performance, favorable ohmic contact quality, wide sintering temperature range, low sheet resistance, water boiling resistance, long ageing life and favorable replaceability to noble metals.

Description

technical field [0001] The invention relates to the technical field of environment-friendly new materials, in particular to an environment-friendly lead-free aluminum paste and a preparation method thereof. Background technique [0002] Base metal aluminum paste has been used as an electronic paste in foreign countries in the 1980s. After the reform and opening up, it was introduced into my country and developed rapidly. At present, my country has been able to produce various functional aluminum paste products, which have been widely used in various electronic components, microelectronics, optoelectronics and various high-temperature resistant PTC heating ceramic substrates. By printing aluminum paste on the ceramic body , After high-temperature co-firing, the aluminum paste penetrates into the surface of the ceramic to realize the ohmic contact of the ceramic body and its chips and the functions of electrical and thermal conduction, with safe and reliable performance and lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00H01L31/0224
Inventor 胡卫星
Owner WUHAN YILAI RUIER HIGH TECH
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