Wear of zirconia-dispersed alumina at ambient temperature, 140°C and 250°C

Carter, G.A.; Riessen, Arie van; Hart, Robert D.

doi:10.1016/j.jeurceramsoc.2005.10.008

Cited by 7 publications

(1 citation statement)

References 10 publications

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“…Although pin‐on‐disk loading is very localized and this requires that the area affected by the stress is constrained by the bulk, the implication is for extensive conversion of T→M with extreme microcracking and subsequent pullout of grains, resulting in further wear. Previous work 6,9 has shown that pin‐on‐disk wear surfaces are devoid of ZrO 2 , which is consistent with the above comments.…”

Section: Discussionsupporting

confidence: 91%

Neutron Diffraction of Zirconia‐Dispersed Alumina with Increasing Stress and Temperature

Carter

Riessen

2008

Journal of the American Ceramic Society

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Neutron and X‐ray diffraction were used to investigate changes in the phase composition and lattice parameters with temperature and pressure of a 20‐wt% zirconia‐dispersed alumina composite. Neutron diffraction was used to determine the variation of tetragonal/monoclinic zirconia phase abundance for the bulk with stress. The bulk tetragonal/monoclinic ratio decreased by 40% for a stress of 550 MPa. A difference in the tetragonal/monoclinic ratio between the near‐surface and the bulk of the processed samples is believed to contribute to observed variations in nonuniform strain in the matrix, which has the effect of prestressing the sample. Placing a stress on the sample initially releases this prestressing.

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Section: Discussionsupporting

confidence: 91%