【摘 要】
：
The constitution and firing-technology of Ni paste were experimentally investigated. The experimental results show that the contact resistance could be lowered
【机 构】
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Department of Electronic Science & Technology,Faculty of Physics and Electronic Engineering
【基金项目】
：
国家高技术研究发展计划(863计划)
论文部分内容阅读
The constitution and firing-technology of Ni paste were experimentally investigated. The experimental results show that the contact resistance could be lowered by adding glass powder and Boron powder,respectively used as adhesive and antioxidant when the content of Ni powder is higher than 65wt%. By firing at 810 ℃, Ni paste obtained could form a good ohmic contact to PTC ceramics, as shown by SEM iamges. In addition, we compared the electrical properties of PTCR ceramics measured with various electrodes and found that fired-Ni contact is superior to contacts made by fired-Al and sputtered-Ni.
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