Assessing the electrical property of carbon nanotube reinforced oxide ceramic matrix composites produced by ceramic injection moulding

Authors

  • Ayda Bouhamed Professorship of Measurement and Sensor Technology, Chemnitz University of Technology
  • Rajarajan Ramalingame Professorship of Measurement and Sensor Technology, Chemnitz University of Technology
  • Yu Zhang Professorship of Measurement and Sensor Technology, Chemnitz University of Technology
  • Slim Naifar Professorship of Measurement and Sensor Technology, Chemnitz University of Technology
  • Andrea Preuß Endowed Chair Textile Plastic Composites and Hybrid Compounds, Chemnitz University of Technology
  • Kristina Roder Endowed Chair Textile Plastic Composites and Hybrid Compounds, Chemnitz University of Technology
  • Daisy Nestler Endowed Chair Textile Plastic Composites and Hybrid Compounds, Chemnitz University of Technology
  • Olfa Kanoun Professorship of Measurement and Sensor Technology, Chemnitz University of Technology
  • Lothar Kroll Department of Lightweight Structures and Polymer Technology, Chemnitz University of Technology

DOI:

https://doi.org/10.21935/tls.v5i1.180

Abstract

Owing to its remarkable properties, multiwalled carbon nanotubes (MWCNTs) are attracting the interest for realization of sensors.

The potential of MWCNTs for high temperature sensing applications was investigated by integration within reinforced aluminium oxide ceramic composite. MWCNTs up to 2 wt% were mixed with reinforced aluminum oxide ceramic composite using solution mixing method to ensure good homogeneilty of the oxide ceramic composite powders. Specimens were realized using ceramic injection moulding process (CIM) followed by debinding and sintering procedures. The topography of specimens were examined using atomic force microscopy (AFM). Electrical measurements were also carried out.

The results show good demouldability at high MWCNTs concentration and homogenous distribution of the MWCNTs within the oxide ceramic matrix. AFM images illustrate the reduction of surface roughness by increasing the MWCNTs content which demonstrates the role of MWCNTs to improve the fracture resistance of the oxide ceramic matrix composite. As well, the electrical resistance of the feedstocks were reduced sharply. After sintering process, the resistance range drops enormously from M Ω to reach 12.1 Ω at low MWCNTs content; which make them suitable to be as electrode with high temperature capability. The electrical resistance temperature dependency shows a negative temperature coefficient behaviour with negligible resistance change.

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Published

2022-04-28

Issue

Vol. 5 No. 1 (2021): Special Issue: 5th International MERGE Technologies Conference (IMTC), 1st - 2nd December 2021, Chemnitz

Section

Articles

License

Copyright (c) 2022 Ayda Bouhamed, Rajarajan Ramalingame, Yu Zhang, Slim Naifar, Andrea Preuß, Kristina Roder, Daisy Nestler, Olfa Kanoun, Lothar Kroll

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