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Wear of Some Advanced Ceramics under a Sharp Indenter in Unidirectional Sliding
Author(s) -
Mukerji J.,
Das P. K.
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb07781.x
Subject(s) - materials science , tin , silicon nitride , ceramic , composite material , nitride , titanium nitride , tetragonal crystal system , radius , abrasive , cracking , metallurgy , crystallography , layer (electronics) , chemistry , computer security , computer science , crystal structure
The wear of reaction‐bonded SiC (RSSiC), dense silicon nitride (DSN), tetragonal zirconia ZrO 2 ( t ), and alumina‐titanium nitride (Al 2 O 3 –TiN) composites have been studied under a sliding diamond indenter having an included angle of 90° and a tip radius of 6 μm at a sliding speed of 8 mm/s. The relative wear resistance as measured from the track diameter was in the order DSN > Al 2 O 3 –TiN > RSSiC > ZrO 2 ( t ). The track width showed a straight‐line relationship with the square root of load, implying that lateral cracking was responsible for the wear. The wear rates decreased with load and varied from 1 × 10 −5 to 2 × 10 −5 mm/(m.g) for the above ceramics. The wear rate increased sharply as the velocity increased over 1 m/min at a load of 300 g and above due to frictional heat generated because of the work of sliding.