Phases Transformation Analysis of ZrO₂ Ceramics after Laser Shock Processing

Abstract:

Through phrase transformation analysis on ceramics samples after applied laser shock wave, study was made on micro-structure and mechanical performance transformation and transformation laws. Thus conclusions were drawn through analysis as follows: tensile stress was caused on back surface of TZP ceramics sample by laser shock wave, and further transformation was generated under tensile stress in a way that about 48% tetragonal phrases t-ZrO2 transformed into monoclinic phrases m-ZrO2, which expanded volume of and gave rises to micro-cracks, and relief stress and micro-cracks caused will absorb the energy of main cracks, which can impede expansion of main cracks and realize the aim of phrase transformation toughening.

• Periodical: Key Engineering Materials (Volume 464)
• Pages: 632-636
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.464.632
• Online since: January 2011
• Authors: Ling Feng Zhang, Yan Zhi Wang, Yi Xiong, Jinzhong Lu
• Keywords: Brittleness, Laser Shock Processing (LSP), Phase Transformation, Tetragonal Zirconia Polycrystals (TZP)

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