Effect of Ag addition on the microstructure and electrical properties of Ni0.6CoMn1.4O4/Ag composite ceramics

2021 ◽  
pp. 163528
Author(s):  
Chengjian Ma ◽  
Ning Li ◽  
Hong Gao ◽  
Jianxiang Ding
2010 ◽  
Vol 25 (2) ◽  
pp. 391-395 ◽  
Author(s):  
Chien-Neng Liao ◽  
Yen-Chun Huang

SnTe is the most common compound formed at the bismuth telluride/metal soldered junction of thermoelectric modules. It affects the mechanical and electrical properties of the soldered junction. In the study we investigate the growth of SnTe compound during reaction between molten Sn–3.5Ag solder and tellurium at 250 °C. We found that the growth of SnTe is suppressed by Ag–Te bilayer compounds that block further reaction between liquid Sn and Te. With increasing reaction time, the SnTe morphology becomes rough as a result of coarsening of SnTe grains. The growth of SnTe grains follows the conservative ripening kinetics with the mean particle size proportional to one-third power of reaction time.


2020 ◽  
Author(s):  
Yongcheng Lu ◽  
Yuanxun Li ◽  
Daming Chen ◽  
Rui Peng ◽  
Qinghui Yang ◽  
...  

Abstract In order to explore an economical functional phase alternative material for thick film resistors, the crystal structure, microstructure, and electrical properties of (1-x)LSCN + xLCNZ (x = 0.0–1.0) composite ceramics were studied through solid-state reaction experiments. The composite ceramics were characterized by x–ray diffraction, scanning electron microscopy, energy dispersive x–ray spectroscopy, and DC four–probe method. Results suggested that the main phases of LSCN and LCNZ were formed, along with a small part of impurity phases. The addition of LCNZ to LSCN decreased the electrical conductivity and changed the TCR from positive to negative. Zero TCR could be achieved around 0.6 < x < 0.8 and relatively low absolute TCR values could be obtained for the samples of 0.4 ≤ x ≤ 0.8. The ceramic of 0.6LSCN + 0.4LCNZ showed the optimal performances of conductivity = 1923 S/cm, TCR = 379.54 ppm/℃, and relative density = 95.05%.


2015 ◽  
Vol 180 (5-6) ◽  
pp. 356-362 ◽  
Author(s):  
Xuejiao Yue ◽  
Yanhong Zhan ◽  
Xiang Liu ◽  
Gang Gu ◽  
Qiangshen Wang ◽  
...  

2012 ◽  
Vol 23 (9) ◽  
pp. 1728-1733 ◽  
Author(s):  
Fang Guan ◽  
Huimin Zhang ◽  
Aimin Chang ◽  
Pengjun Zhao ◽  
Bo Zhang

Author(s):  
Ruifeng Wu ◽  
Yuanwei Lin ◽  
Yafei Liu ◽  
Aimin Chang ◽  
Pengjun Zhao ◽  
...  

2015 ◽  
Vol 349 ◽  
pp. 983-987 ◽  
Author(s):  
Xuepeng Yin ◽  
Xiang Liu ◽  
Yanhong Zhan ◽  
Hui Zhang ◽  
Qingming Chen

2010 ◽  
Vol 21 (3) ◽  
pp. 242-245 ◽  
Author(s):  
Joseph Lik Hang Chau ◽  
Yu-Hsien Chou ◽  
Chi-San Chen ◽  
Chih-Chao Yang

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