Air-fired Ni for Ohmic Electrode of PTCR  

作　　者：周东祥 陈勇 

机构地区：[1]Department of Electronic Science & Technology,Huazhong University of Science & Technology, Wuhan 430074, China [2]Department of Electronic Science & Technology,Huazhong University of Science & Technology, Wuhan 430074, China,Faculty of Physics and Electronic Engineering, Hubei University, Wuhan 430062, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2006年第2期44-46,共3页武汉理工大学学报（材料科学英文版）

基　　金：FundedbytheNationalHiTechResearchandDevelopmentProgram(863Project)ofChina(2001AA325040)

摘　　要：The constitution and firing-technology of Ni paste were experimentally investigated. The experimental resalts 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.The constitution and firing-technology of Ni paste were experimentally investigated. The experimental resalts 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.

关 键 词：PTCR Ni paste ohmic contact semiconducting ceramics 

分 类 号：TQ174[化学工程—陶瓷工业]