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A Thick Film Resistor Paste Suitable for Different Types of Stainless Steel Substrates

A technology of thick film resistors and resistor paste, which is applied to thick film resistors, conductive materials dispersed in non-conductive inorganic materials, non-adjustable metal resistors, etc., can solve the problem of large resistance value changes and small resistance value change rates Stability, poor reliability and other issues, to achieve the effect of low resistance value change rate, lower resistance value change rate, and less pollution

Active Publication Date: 2022-02-25
西安宏星电子浆料科技股份有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of large resistance value change and poor reliability of the existing thick-film resistor paste for stainless steel substrates in the process of power-on work, and to provide a thick-film resistor paste suitable for different types of stainless steel substrates. The slurry has the characteristics of small resistance change rate and high stability

Method used

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  • A Thick Film Resistor Paste Suitable for Different Types of Stainless Steel Substrates
  • A Thick Film Resistor Paste Suitable for Different Types of Stainless Steel Substrates
  • A Thick Film Resistor Paste Suitable for Different Types of Stainless Steel Substrates

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, which do not limit the protection scope of the present invention. The protection scope of the present invention is only limited by the claims, and any omission, replacement or modification made by those skilled in the art on the basis of the disclosed embodiments of the present invention will fall within the protection scope of the present invention.

[0017] 1. Preparation of pretreated blue copper powder

[0018] The blue copper block is crushed by a crusher, and then ball milled with a ball mill. The mass ratio of the ball mill ball to the blue copper block is 1:2, and deionized water is added to cover the ball mill ball and the blue copper block, and the ball is milled for 48 hours. The wet slurry is sieved with a 400-mesh sieve, and then dried at 150°C for 24 hours to obtain blue copper powder; mix the blue copper powder and absolute ethanol at a m...

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Abstract

The invention discloses a thick-film resistance paste suitable for different types of stainless steel substrates. The resistance paste comprises the following components in weight percent: 35%-50% precious metal powder, 10%-25% lead-free glass powder, 5%~15% inorganic additives, 17%~30% organic carrier, of which lead-free glass powder is composed of ZnO, CaO, Al 2 o 3 , SiO 2 , B 2 o 3 Composition, inorganic additives are pretreated blue copper powder, Al 2 o 3 、 Bi 2 o 3 Composition, the pretreated blue copper powder is made by crushing the blue copper block and then going through processes such as ultrasonication and roasting. The resistance paste of the present invention greatly improves the microstructure and density of the resistance body by adding pretreated blue copper powder as a sintering accelerator, enhances the sintering performance and thermal performance of the resistance body, and has high-pressure resistance on different types of stainless steel substrates. And the advantages of maintaining good resistance stability under high current.

Description

technical field [0001] The invention belongs to the technical field of resistance slurry, and in particular relates to a thick-film resistance slurry suitable for different types of stainless steel substrates, which is widely used in insulated stainless steel substrates and products processed by thick-film circuit technology. Background technique [0002] In the field of thick film circuit technology, traditional alumina ceramic substrates are prone to fragmentation at higher temperatures. The stainless steel substrate has comprehensive characteristics such as excellent mechanical properties, good thermal properties, easy processing and molding, and potential low cost, and has attracted more and more attention in the field of heating. There are mainly three types of stainless steel substrates on the market: (1) 430 stainless steel substrates, commonly known as stainless iron, contain 15% to 30% Cr, have a body-centered cubic crystal structure, generally do not contain Ni, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01C7/00H01C17/065H01C17/30C03C12/00H05B3/12
CPCH01B1/16H01B1/22H01C7/003H01C17/06513H01C17/06553H01C17/30C03C12/00H05B3/12
Inventor 王顺顺薛韩英党丽萍边甄勇赵敏王博
Owner 西安宏星电子浆料科技股份有限公司
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