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Study of abrasive wear resistance of transformation toughened ceramics

Authors
Journal
Wear
0043-1648
Publisher
Elsevier
Publication Date
Volume
165
Issue
2
Identifiers
DOI: 10.1016/0043-1648(93)90331-f

Abstract

Abstract The decreasing abrasive wear rate of tetragonal zirconia polycrystal ceramic (TZP) with increasing load under experimental conditions is believed to be caused by the martensitic transformation of t-ZrO 2 to m-ZrO 2 in the abraded surface. The transformation toughened ceramics (TZP) appeared to give the best abrasive wear resistance among the ceramics studied in this experimental work. The surface failure of these ceramics was mainly due to the microfractural dropping and powder-type polishing scratches resulting from the brittle microfracturing part of the grain(s). Raising the fracture toughness wherever possible, in conjunction with a suitable hardness, will be beneficial in improving the abrasive wear resistance of ceramics.

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