Sintered Properties of Y-TZP/ZrB₂ Ceramics

Abstract:

The effect of ZrB₂ content ranging from 10 to 30 wt% on the mechanical properties and electrical resistivity of sintered Y-TZP/ZrB₂ composite was investigated. While ZrB₂ content showed marginal improvement in elastic modulus, the presence of up to 20 wt% ZrB₂ was beneficial in densification and hardness of the composite when sintered at lower sintering temperatures. Significantly higher fracture toughness of all composites compared to monolithic Y-TZP implied that other toughening mechanisms are at work. In spite of the poor mechanical properties, Y-TZP/30 wt% ZrB₂ showed the lowest electrical resistivity at room temperature.

• Periodical: Applied Mechanics and Materials (Volume 372)
• Pages: 169-172
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.372.169
• Online since: August 2013
• Authors: W.J. Kelvin Chew, Ramesh Singh, C.Y. Tan, M. Amiriyan, R. Tolouei, W.D. Teng
• Keywords: Mechanical Property, Sintering, Y-TZP, Zirconia, ZrB₂

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