Sm/Al modified Sn0.94Sb0.06O2 ceramics for NTC thermistors-Reference-Cited by-同舟云学术

Sm/Al modified Sn0.94Sb0.06O2 ceramics for NTC thermistors

Published:2024 Issue:2 Volume:18 Page:162-171
ISSN:1820-6131
Container-title:Processing and Application of Ceramics
language:en
Short-container-title:PAC

Author:

Zhang You¹^ORCID,Zhang Hong¹^ORCID,Chen Hao¹^ORCID,Zhan Yifei¹^ORCID,Li Zhicheng¹^ORCID,Leng Senlin²^ORCID

Affiliation:

1. School of Materials Science and Engineering, Central South University, Changsha, China

2. School of Material and Chemical Engineering, Tongren University, Tongren, China

Abstract

Negative temperature coefficient (NTC) thermistors are key components for temperature sensors and actuators. In this work, Sn0.94-x-yAlxSmySb0.06O2+? (0 ? x ? 0.05, 0 ? y ? 0.15) ceramics were prepared by solid-state reaction method for potential application of NTC thermistors. The Sm/Al co-doped SnO2 ceramics had the main phase with tetragonal structure as that of SnO2 crystal. The prepared ceramics presented adjustable room temperature resistivity (?25) and temperature sensitivity (B value) for various Al contents. Sm/Al co-doping significantly improved the ageing stability, the resistance shift rate was below 3% after ageing at 150?C for 500 h, while the average resistance shift rate was 41.4% of the ceramics without Sm-doping. The conduction mechanisms and the effect of dopants on the ageing stability were investigated by analysis of impedance spectra and element valences combined with defect chemistry theory.

Publisher

National Library of Serbia

Reference33 articles.

1. A. Feteira, “Negative temperature coefficient resistance (NTCR) ceramic thermistors: an industrial perspective”, J. Am. Ceram. Soc., 92 (2009) 967-983.

2. K. Li, Z. Li, Y.Wen, Y. Zhan, H. Zhang, “Mn/La co-doped WO3 (MnxLa0.03WO3+δ, x ≤ 0.1) ceramics for NTC thermistors”, J. Mater. Sci. Mater. Electron., 35 (2024) 725.

3. J. Liu, Q. Guo, W. Liang, X. Feng, H. Wang, “On the NTC behaviors in explosion limits of C1 to C3 n-alkane/air mixtures”, Energy, 294 (2024) 130785.

4. Y. Chen, G. Yang, J. Wang, Y. Lu, H. Shen, X. Zhang, S. Liang, “A novel linear temperature thermistor in the xAl2O3-(1-x)CdSnO3 system”, Ceram. Int., 50 (2024) 12607-12613.

5. M. Hosseini, B. Yasaei, “Effect of grain size and microstructures on resistivity of Mn-Co-Ni thermistor”, Ceram. Int., 24 (1998) 543-545.