Mechanical Properties Of Single Crystal Ceramics

D J Rowcliffe; S M Johnson

doi:10.1117/12.939629

9 March 1987 Mechanical Properties Of Single Crystal Ceramics

D J Rowcliffe, S M Johnson

Proceedings Volume 0681, Laser and Nonlinear Optical Materials; (1987) https://doi.org/10.1117/12.939629
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

Approaches to characterizing the mechanical behavior of single crystal ceramics are reviewed. Consideration is given to techniques applicable to large crystals and to indentation techniques that can be used on crystals of 1 mm or less. The importance of flaws in controlling the mechanical behavior of brittle ceramics is discussed, leading to an emphasis on fracture mechanics methods. These techniques are applicable to the determination of fracture toughness and to the measurement of slow crack growth in aggresive environments. Indentation processes have been analyzed extensively and the good understanding of stress fields and micro-mechanics of indentation has led to techniques to measure hardness, toughness and elastic modulus. Measurements of hardness anistropy can be used to determine slip planes and also provide considerable information on local plastic flow in brittle crystals.

Citation Download Citation

D J Rowcliffe and S M Johnson "Mechanical Properties Of Single Crystal Ceramics", Proc. SPIE 0681, Laser and Nonlinear Optical Materials, (9 March 1987); https://doi.org/10.1117/12.939629

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