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Examination of microhardness indentation‐induced subsurface damage in alumina platelet reinforced borosilicate glass using confocal scanning laser microscopy
Author(s) -
Winn A. J.,
Boccaccini A. R.,
Imam N.,
Trusty P. A.
Publication year - 1997
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1046/j.1365-2818.1997.1880751.x
Subject(s) - borosilicate glass , materials science , indentation , composite material , brittleness , indentation hardness , matrix (chemical analysis) , residual stress , cracking , microstructure
Borosilicate glass and borosilicate glass matrix composites reinforced with 10, 15 and 30 vol.% alumina platelets have been indented and the subsurface lateral cracking examined by confocal scanning laser microscopy (CSLM). The suitability of the CSLM technique as a quick and nondestructive method of obtaining three‐dimensional information of subsurface damage in dispersion reinforced brittle matrix composite materials was demonstrated. The addition of alumina platelets to the glass matrix has resulted in a reduction in the extent and depth of subsurface damage due to indentation, and hence may make the material more resistant to erosive wear. This damage development may be a consequence of the presence of residual compressive stresses in the matrix and the strong platelet/matrix interfacial bonding.