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Self healing ability and strength recovery of different laminated Al2O3 cutting tool composites

Sun, Junlong; Liu, Changxia; Zhang, Rui; Hussain, Tanvir

Authors

Junlong Sun

Changxia Liu

Rui Zhang



Abstract

The lifetime of ceramic tool is decreased because of the extension of cracks, and it will be prolonged if the cracks can be self healed. The healing ability of laminated Al2O3 cutting tool composites (Al2O3-(WC-Co)-MgO/Al2O3–TiC–MgO) were assessed. For determining which laminated structure and the healing condition was the best for the composite, the flexural strength and recovery rates were measured and different healing condition were used. XRD, EDS and SEM technology were carried out to identify their compositions and microstructures after the healing. The number of cracks filled with TiO2, crack size and the oxide content effect were utilized to explain why the flexural strength and recovery rates of laminated Al2O3 cutting tool composite after the healing were different. A single particle model was utilized to identify the relation between the threshold time, grain size and the self healing temperature of the composites.

Journal Article Type Article
Publication Date Aug 15, 2020
Journal Ceramics International
Print ISSN 0272-8842
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 46
Issue 12
Pages 20463-20471
APA6 Citation Sun, J., Liu, C., Zhang, R., & Hussain, T. (2020). Self healing ability and strength recovery of different laminated Al2O3 cutting tool composites. Ceramics International, 46(12), 20463-20471. https://doi.org/10.1016/j.ceramint.2020.05.145
DOI https://doi.org/10.1016/j.ceramint.2020.05.145
Keywords Process Chemistry and Technology; Materials Chemistry; Electronic, Optical and Magnetic Materials; Surfaces, Coatings and Films; Ceramics and Composites
Publisher URL https://www.sciencedirect.com/science/article/pii/S0272884220314346
Additional Information This article is maintained by: Elsevier; Article Title: Self healing ability and strength recovery of different laminated Al2O3 cutting tool composites; Journal Title: Ceramics International; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.ceramint.2020.05.145; Content Type: article; Copyright: © 2020 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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