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Erosion Damage and Strength Degradation of Zirconia‐Toughened Alumina
Author(s) -
BREDER KRISTIN,
PORTU GOFFREDO,
RITTER JOHN E.,
FABBRICHE D. DALLE
Publication year - 1988
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.1151-2916.1988.tb06412.x
Subject(s) - materials science , cubic zirconia , tetragonal crystal system , composite material , monoclinic crystal system , phase (matter) , degradation (telecommunications) , surface energy , erosion , ceramic , chemistry , crystallography , crystal structure , biology , telecommunications , paleontology , organic chemistry , computer science
The erosion wear and posterosion strength properties of Al 2 O 3 containing 10 vol% ZrO 2 were determined as a function of the kinetic energy of the impacting sharp particles. Samples were prepared with three different surface treatments to obtain different amounts of tetragonal zirconia on the surface. With all three surface treatments a transformation from tetragonal to monoclinic phase due to the impacting particles was observed. The erosive wear was independent of the initial amount of tetragonal phase at the surface and was not statistically different from that found for commercial alumina. The posterosion strength was relatively insensitive to increasing kineticenergy of the eroding particles, indicating a rising fracture resistance behavior for this zirconia‐toughened alumina.