Pressure-Induced Sintering Of ZnS

S. Block; G. J. Piermarini; M. Balmer; V. Bean

doi:10.1117/12.960765

11 September 1989 Pressure-Induced Sintering Of ZnS

S. Block, G. J. Piermarini, M. Balmer, V. Bean

Proceedings Volume 1112, Window and Dome Technologies and Materials; (1989) https://doi.org/10.1117/12.960765
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Pressure-induced sintering of ZnS compacts was shown to require much lower temperatures than those used in conventional sintering processes. The hardness of the ZnS compacts was found to be directly proportional to the initial densification pressure. Micrographs of the ZnS compacts showed that trapped air causes pores and produces spring-back effects hindering densification and leading to cracking. Initial studies were carried out in a miniature diamond anvil high pressure cell. More recent work involved the preparation of much larger samples utilizing large volume hydraulic presses. Hardness and toughness were measured by the microindentation technique. Fracture toughness, as well as hardness, was shown in some cases to be superior to those obtained by conventional sintering of ZnS. It was also shown that the addition of NiS to the ZnS markedly improved the fracture toughness of the material. Pore pressure is a critical factor in pressure-induced sintering.

Citation Download Citation

S. Block, G. J. Piermarini, M. Balmer, and V. Bean "Pressure-Induced Sintering Of ZnS", Proc. SPIE 1112, Window and Dome Technologies and Materials, (11 September 1989); https://doi.org/10.1117/12.960765

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