YBCO thick film resistance paste based on stainless steel base board and preparation method thereof

A technology of thick film resistors and stainless steel, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, heating element materials, etc., can solve the impact of performance stability and service life, limit the promotion and use of thick film resistor paste, silver ions Easy to migrate and other issues, to achieve good compatibility, excellent conductivity, and firm combination

Inactive Publication Date: 2010-12-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no mature cheap resistance paste applied to stainless steel substrates in the domestic market. Since all kinds of resistance pastes use precious metals as conductive fillers, the cost is high, which seriously limits the popularization and use of thick film resistance pastes. Ions are easy to migrate, performance stability and service life are affected

Method used

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  • YBCO thick film resistance paste based on stainless steel base board and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The numerical values ​​of each component involved in this embodiment are as follows, and its unit is determined by the previous implementation mode part:

[0030] Solid phase composition: organic vehicle = 60: 40;

[0031] YBCO ceramic powder: glass powder = 60: 40;

[0032] The molar ratio of each component of YBCO ceramic powder is Y 2 o 3 :BaO:CuO=1:1:8;

[0033] The weight percent of glass raw material is:

[0034] SiO 2 : 30.21%, H 3 BO 3 : 25.86%, NaNO 3 : 43.93%;

[0035] The organic vehicle contains the following components:

[0036] Terpineol: 50%, Ethylcellulose: 20%, Tributyl Citrate: 10%,

[0037] 1,4-Butyrolactone: 10%, Lecithin: 10%.

Embodiment 2

[0039] The numerical values ​​of each component involved in this embodiment are as follows, and its unit is determined by the previous implementation mode part:

[0040] Solid phase composition: organic vehicle = 85:15;

[0041] YBCO ceramic powder: glass powder = 99.9: 0.1;

[0042] The molar ratio of each component of YBCO ceramic powder is Y 2 o 3 :BaO:CuO=2:2:6;

[0043] The weight percent of glass raw material is:

[0044] SiO 2 : 19.77%, H 3 BO 3 : 28.85%, NaNO 3 : 23.63%, Al 2 o 3 : 2.97%, Ba(NO 3 ) 2 : 9.07%, LiNO 3 : 13.73%, ZnO: 1.98%;

[0045] The organic vehicle contains the following components:

[0046] Terpineol: 90%, Ethylcellulose: 1%, Nitrocellulose: 9%.

Embodiment 3

[0048] This embodiment provides a preparation method for 1Cr17 (430#) series stainless steel substrate thick film resistor slurry, as follows:

[0049] 1. Formula of YBCO ceramic powder: Y according to the molar ratio of active ingredients 2 o 3 :BaO:CuO=1:4:6 ratio raw material Y 2 o 3 , BaCO 3 and CuO;

[0050] 2. Set Y 2 o 3 , BaCO 3 Mix with CuO evenly, wet ball mill for 24 hours, and dry;

[0051] 3. Put it into a resistance furnace for pre-firing, the pre-firing temperature is 900°C, and keep it warm for 3 hours;

[0052] 4. Wet ball mill the pre-burned powder again for 24 hours and dry;

[0053] 5. Put it into a resistance furnace for sintering, the sintering temperature is 920°C, and keep it warm for 3 hours;

[0054] 6. Glass formula: SiO 2 : 30.21%, H 3 BO 3 : 25.86%, NaNO 3 : 43.93%;

[0055] 7. Glass melting process: 1100°C, heat preservation for 2 hours, water quenching;

[0056] 8. Put the obtained glass slag into a ball mill for wet ball milling ...

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Abstract

The invention provides YBCO thick film resistance paste based on a stainless steel base board and a preparation method thereof, belonging to electronic material. The paste comprises solid phase component and organic carrier component, wherein the organic carrier component comprises the following components based on the parts by percentage of: 50-90% of terpinol, 1-20% of ethocel, 0-30% of tirbutyl citrate, 0-10% of 1, 4-butyrolactone, 0-9% of nitro cellulose, 0-8% of hydrogenated castor oil and 0-10% of lecithin; the weight ratio of the solid phase component to the organic carrier is equal to (60-85):(40-15); according to the weight ratio, the component of the solid phase component is as follows: YBCO ceramic powder: glass powder=(60-9.9):(40-0.1); the YBCO ceramic powder comprises Y2O3, BaO and CuO; according to the mole ratio, Y2O3: BaO: CuO=(1-2): (1-8): (1-8); the glass is SiO2-B2O3-Na2O-Al2O3-BaO-Li2O-ZnO series glass; and the weight percentage of each component of the glass is as follows: 20-50% of SiO2, 5-40% of B2O3, 10-50% of Na2O, 0-20% of Al2O3, 0-20% of BaO, 0-30% of Li2O and 0-20% of ZnO. The invention has the characteristics of low cost, large power and good stability, etc.

Description

technical field [0001] The invention relates to electronic material technology, in particular to metal substrate-based thick-film resistance paste and its preparation technology. Background technique [0002] In the field of electric heating, new heating elements require small size, high power, small thermal inertia, large surface heat load, low power consumption, high thermal efficiency, fast thermal start, stable power, uniform temperature field, good manufacturability, and self-control of the body. Temperature, safe and reliable operation, long life, wide range of adaptation, so thick film heating elements should be used instead of electric heating tubes or PTC heaters. DuPont of the United States has pushed its stainless steel heating plate for coffee pots to the Chinese market, and the National University of Defense Technology in China has developed a resistance paste with silver and palladium as conductive fillers (Chinese invention patent, patent number ZL 02139894.1)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/20H01B1/24H05B3/14
Inventor 杨传仁张琴张继华陈宏伟
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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