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Knoop microhardness measurements on lithium niobate and lithium tantalate (1975)

Brown, H. ; Ballman, A. A. ; Chin, G. Y.

Springer

Journal of materials science 10 (1975), S. 1157-1160

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ISSN: 1573-4803

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Abstract Knoop microhardness measurements were made on the (11.0), (01.0) and (00.1) planes of the trigonal isostructural compounds lithium niobate and lithium tantalate. The data indicate uniform hardness in the 〈11.0〉 and 〈01.0〉 directions and greater hardness in the [00.1] direction. In accordance with previous findings of hardness anisotropy in materials with hexagonal crystal structure, the present data indicate preferred slip on basal planes. The ratio of hardness to the shear modulus C 66 is close to 0.1, which is usually found in covalent-bonded solids.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00541397

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