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The Printing and Firing Process of Al Paste in PTC Ohmic Contact Electrodes
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作者 梁飞 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2004年第3期26-28,共3页
Al electrodes are well known as ohmic contact electrodes for the PTC component , the influence of their thickness on final component properties was investigated by comparing their ohmic characteristics with the ones ... Al electrodes are well known as ohmic contact electrodes for the PTC component , the influence of their thickness on final component properties was investigated by comparing their ohmic characteristics with the ones of InGa electrodes . After observing the Al paste physical and chemical behaviors during rising temperature by thermal analysis (DTA), the firing operation of Al electrodes could be divided into three main subsections: the temperature rising time (t-r), the peak firing temperature (T-p) and the hold time at peak firing temperature (t-h). The effects of these three parameters on final component properties were discussed in detail. 展开更多
关键词 PTC thermistor Al electrodes ohmic contact characteristics printing and firing process
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