Abstract
Toughening mechanics of ZrO2 toughened Al2O3 composite ceramics was researched by mechanical property test and X-ray phase analysis. The results show that: t→m phase transformation rate of ZrO2 is one of the main factors in zirconia toughened alumina composite ceramics. If samples are broken down, t→m phase transformation rate of ZrO2 is the highest when ZrO2 content is 25%. At the same time the rate of nano-zirconia toughened alumina ceramics is higher than that of sub-micron composite ceramics. So fracture toughness of ceramics can be improved significantly by adding proper amount of ZrO2 into Al2O3 matrix and refining ZrO2 particles. In addition, to nano-zirconia particles, some other toughening mechanics exist such as nano effects, microcrack toughening, etc.
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© 2008 Springer-Verlag London Limited
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Zhao, B., Du, B.Y., Duan, T.L. (2008). Research on Toughening Mechanics of Zirconia Toughened Alumina Composite Ceramics. In: Yan, XT., Jiang, C., Eynard, B. (eds) Advanced Design and Manufacture to Gain a Competitive Edge. Springer, London. https://doi.org/10.1007/978-1-84800-241-8_23
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DOI: https://doi.org/10.1007/978-1-84800-241-8_23
Publisher Name: Springer, London
Print ISBN: 978-1-84800-240-1
Online ISBN: 978-1-84800-241-8
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