Resistance-Temperature Characteristics of Cr Doped Ni0.7Mn2-xCu0.3CrxO4 NTC Thermistors

Article Preview

Abstract:

Manganese-based solid solution ceramics of transition metal with spinel-type crystal structure have generated much interest as NTC thermistors in various domestic and industrial applications. Doping has been considered as one of the most important method to improve their electrical properties. In this work, Cr doped Mn-based solid solution NTC ceramics Ni0.7Mn2-xCu0.3CrxO4 (x = 0.1, 0.2, 0.3 and 0.4) were prepared by solid-state reaction method. X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray energy dispersive spectrometer (EDS) were applied to study the phase structure, surface morphology and surface element content. The results indicate that the resistance and B value increase as the substituted Cr content increases.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

9-14

Citation:

Online since:

June 2020

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2020 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] K. Park and I.H. Han: J. Electroceram. Vol. 17 (2006), p.1079.

Google Scholar

[2] G.Lavenuta: Sensors. Vol. 14 (1997), p.46.

Google Scholar

[3] J.G. Fagan and V.R.W. Amarkoon: Amer. Cearm. Soc. Bull. Vol. 72 (1993), p.70.

Google Scholar

[4] Hong Gao, Chengjian Ma, Bin Sun: J Mater Sci: Mater Electron. Vol. 25 (2014), p.3990.

Google Scholar

[5] Justin M. Varghese, A. Seema and K.R. Dayas: Materials Science and Engineering B. Vol. 149 (2008), p.47.

Google Scholar

[6] K. Park and I. H. Han, J. Electroceram. Vol. 17 (2006), p.1069.

Google Scholar

[7] Justin. M. Varghese, A. Seema and K. R. Dayas: J. Electroceram. 22 (2009) 436-441.

Google Scholar

[8] Yu Zhou and Gaohui Wu: Analysis Methods in Materials Science (Harbin Institute of Technology Press, Harbin, 2015).

Google Scholar

[9] P. Barahona, V. Bodenez, T. Guizouarn, O. Pena, J. Ortiz, E. Rios, R. Pastene and J.L. Gautier: J. Chil. Chem. Soc. Vol. 50 (2005), p.495.

DOI: 10.4067/s0717-97072005000200011

Google Scholar

[10] K. Park and D. Y. Bang: J Mater Sci: Mater Electron. Vol. 14 (2003), p.81.

Google Scholar

[11] Gaomin Wang, Hong Zhang, Xiang Sun, Ya Liu and Zhicheng Li: J Mater Sci: Mater Electron. Vol. 28 (2017), p.363.

Google Scholar

[12] Fei Cheng, Junhua Wang, Huimin Zhang, Aimin Chang, Wenwen Kong, Bo Zhang and Long Chen: J Mater Sci: Mater Electron. Vol. 26 (2015), p.1374.

Google Scholar

[13] Jiangying Wang and Jingji Zhang: Mater. Sci. Eng B-adv. Vol. 176 (2011), p.616.

Google Scholar