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

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

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.

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

• Journal Article Type: Article
• Acceptance Date: May 14, 2020
• Online Publication Date: May 20, 2020
• Publication Date: Aug 15, 2020
• Deposit Date: Jun 25, 2020
• Publicly Available Date: May 21, 2021
• Journal: Ceramics International
• Print ISSN: 0272-8842
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 46
• Issue: 12
• Pages: 20463-20471
• 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
• Public URL: https://nottingham-repository.worktribe.com/output/4709530
• 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.