Skip to main content
SpringerLink
Log in
Book cover

Characterization of Minerals, Metals, and Materials 2017 pp 85–89Cite as

Aging Behaviour in Ni0.5CoxMn2.5−xO4 (x = 0.5, 0.8 and 1.1) Thermistors

  • Conference paper
  • First Online:

  • 4812 Accesses

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

Negative temperature coefficient (NTC) thermistors are required to have good electrical stability for many domestic and industrial applications. The aging phenomenon of NTC thermistors can be described as the change in electrical resistance due to thermal stress with time. In this study, Ni0.5CoxMn2.5−xO4 (x = 0.5, 0.8 and 1.1) ceramics were fabricated by the conventional solid-state reaction method. The powder mixtures of manganese, cobalt and nickel oxides were ball-milled for 5 h. The powders were calcinated at 900 °C for 2 h. The samples were sintered at 1100 °C for 5 h. To investigate the aging behaviour, the samples were held at 150 °C for 400 h. Aging in the samples were calculated by the following equation; ∆R/R0 = (R − R0)/R0 in which R0 is the resistance at 25 °C before the aging test, and R is the resistance at 25 °C after the aging test.

This is a preview of subscription content, log in via an institution.

References

  1. Battault T, Legros R, Brieu M, Couderc J-J, Bernard L, Rousset A (1997) Correlation between microstructure and ageing of iron manganite thermistors. J de Physique 3(7):979–992

    Google Scholar 

  2. Wang J, Zhang J (2012) Effects of Mg substitution on microstructure and electrical properties of NiMn2-xMgxO4 NTC ceramics. J Mater Res 27:928–931

    Google Scholar 

  3. Park K (2005) Fabrication and electrical properties of Mn–Ni–Co–Cu–Si oxides negative temperature coefficient thermistors. J Am Ceram Soc 88:862–866

    Article  Google Scholar 

  4. Li DF, Zhao SX, Xiong K, Bao HQ, Nan CW (2014) Aging improvement in Cu-containing NTC ceramics prepared by co-precipitation method. J Alloy Compd 582:283–288

    Article  Google Scholar 

  5. Hardal G, Price BY Influence of nano-sized cobalt oxide addition on the structural and electrical properties of nickel manganite based NTC thermistors. In: Paper presented at the 23rd international conference on materials and technology, Portorož, Slovenia, 28–30 Sept 2015, p 256

    Google Scholar 

  6. Muralidharan MN, Rohini PR, Sunny EK, Dayas KR, Seema A (2012) Effect of Cu and Fe addition on electrical properties of Ni–Mn–Co–O NTC thermistor compositions. Ceram Int 38:6481–6486

    Article  Google Scholar 

  7. Park K, Han IH (2006) Effect of Cr2O3 addition on the microstructure and electrical properties of Mn-Ni-Co oxides NTC thermistors. J Electroceram 17:1069–1073

    Article  Google Scholar 

Download references

Acknowledgements

This study is supported by TÜBİTAK (The Scientific and Technical Research Council of Turkey), Project number 3001-114M860. We would like to thank TÜBİTAK for its financial support.

Author information

Authors and Affiliations

  1. Metallurgical and Materials Engineering Department, Istanbul University, Istanbul, Turkey

    Gökhan Hardal & Berat Yüksel Price

Authors
  1. Gökhan Hardal
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Berat Yüksel Price
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Gökhan Hardal .

Editor information

Editors and Affiliations

  1. Al Isra University , Amman, Jordan

    Shadia Ikhmayies

  2. Michigan Technological University, Houghton, Michigan, USA

    Bowen Li

  3. Los Alamos National Laboratory, Los Alamos, New Mexico, USA

    John S. Carpenter

  4. Canmet Materials , Hamilton, Ontario, Canada

    JIan Li

  5. Michigan Technological University, Houghton, Michigan, USA

    Jiann-Yang Hwang

  6. Military Institute of Engineering, IME, Rio De Janeiro, Brazil

    Sergio Neves Monteiro

  7. Poltecnico di Torino , Turin, Italy

    Donato Firrao

  8. ArcelorMittal Global R&D, East Chicago, Indiana, USA

    Mingming Zhang

  9. Central South University , Changsha, China

    Zhiwei Peng

  10. University of New South Wales , Canberra, Australia

    Juan P. Escobedo-Diaz

  11. Chongqing University , Chongqing, China

    Chenguang Bai

  12. Middle East Technical University , Ankara, Turkey

    Yunus Eren Kalay

  13. Naval Research Laboratory , Washington, District of Columbia, USA

    Ramasis Goswami

  14. Korea Railroad Research Institute, Uiwang, Korea (Republic of)

    Jeongguk Kim

Rights and permissions

Reprints and permissions

Copyright information

© 2017 The Minerals, Metals & Materials Society

About this paper

Cite this paper

Hardal, G., Price, B.Y. (2017). Aging Behaviour in Ni0.5CoxMn2.5−xO4 (x = 0.5, 0.8 and 1.1) Thermistors. In: Ikhmayies, S., et al. Characterization of Minerals, Metals, and Materials 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51382-9_10

Download citation

Publish with us

Policies and ethics

Search

Navigation