The phases and the toughening mechanisms in (Y)ZrO2-Al2O3-(Ti, W)C ceramics system

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)197-202
Journal / PublicationMaterials Letters
Issue number4
Online published10 Apr 2000
Publication statusPublished - Apr 2000
Externally publishedYes


Y2O3 doped ZrO2 was incorporated into Al2O3-(W, Ti)C by hot-pressing to explore the effect of ZrO2 on the composite mixture of oxide (Al2O3) and carbide ((W, Ti)C). ZrO2 in the hot-pressed composite was identified to be a non-transformable tetragonal crystalline that has no toughening ability. The hard particulates of (W, Ti)C contribute to the toughness of the material by deflecting and bridging the propagating cracks, and the continuous interlocking skeletons of the Al2O3 phase and the (Ti,W)C phase contribute to the strengthening.

Research Area(s)

  • ZrO, Al O, Ti,W C, Microstructure, Phase transformation, Toughening and strengthening mechanisms