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Knoop Microhardness Anisotropy of Single‐Crystal Stoichiometric MgAl 2 O 4 Spinel

1987; Wiley; Volume: 70; Issue: 4 Linguagem: Inglês

10.1111/j.1151-2916.1987.tb04994.x

1551-2916

Yoshio Akimune, R. C. Bradt,

Microwave Dielectric Ceramics Synthesis

Microhardness anisotropy profiles for the (100) and (111) planes of single‐crystal stoichiometric MgAl 2 O., spinel were determined at room temperaturé. The (100) microhardness profile has ahardness maximum in tiie [001] and a minimum in the [O11], which supports the previous suggestion that the primary slip system is the {111}〈11¯0〉. The microhardness of the (111) plane is independent of indenter orientation, also consistent, with a {111}〈11¯0〉 primary slip system. It is concluded that these microhardness profiles are in accord with other experimental observations that the {111}〈11¯0〉 is the primary slip system in stoichiometric MgAl 2 O 4 spinel.