Assessing the electrical property of carbon nanotube reinforced oxide ceramic matrix composites produced by ceramic injection moulding
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.
Copyright (c) 2022 Ayda Bouhamed, Rajarajan Ramalingame, Yu Zhang, Slim Naifar, Andrea Preuß, Kristina Roder, Daisy Nestler, Olfa Kanoun, Lothar Kroll
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with Technologies for Lightweight Structures (TLS) agree to the following terms:
The corresponding authors confirm with their imprimatur that the article’s publication in Technologies for Lightweight Structures and the copyright terms have been approved by all the other coauthors.
Authors retain copyright and grant Technologies for Lightweight Structures the right of first publication.
If the paper is accepted for publication the content is licenced under a Creative Commons Licence “Attribution 4.0 International (CC BY 4.0)”. This permits use, distribution, and reproduction in any medium, provided the original work is properly cited, and is otherwise in compliance with the licence. Alternative Creative Commons Licences may be assigned in duly justified cases after consultation with the publisher (mail to: email@example.com).
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., publish it in a book), with an acknowledgement of its initial publication in Technologies for Lightweight Structures.
Authors are permitted and encouraged to post the peer-reviewed, pre-copyedited version (post-print) of their articles online (e.g., in institutional repositories or on their website) prior to and during the submission process as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). If authors wish to republish an article, they are kindly asked to include the following acknowledgment as well as a link to the original source of publication in Technologies for Lightweight Structures to secure consistent citations:
This is a peer-reviewed, pre-copyedited version of an article accepted for publication in the open access journal Technologies for Lightweight Structures (TLS). The original publication with full bibliographic citation is available online at: xxx [insert DOI received upon publication].
For further questions, feel free to contact us via e-mail.