Synthesis And Hot Pressing Of ZnS Powders

Mufit Akinc; Ahmet Celikkaya

doi:10.1117/12.960764

11 September 1989 Synthesis And Hot Pressing Of ZnS Powders

Mufit Akinc, Ahmet Celikkaya

Proceedings Volume 1112, Window and Dome Technologies and Materials; (1989) https://doi.org/10.1117/12.960764
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Zinc sulfide powders with submicron particle size were prepared by homogeneous precipitation from acidic zinc solutions by aging with thioacetamide at elevated temperatures. Monosize, polycrystalline particles having 0.35 μm diameter were obtained. Sulfide ion generation rate in solution depended on temperature, pH and initial thioacetamide concentration. The rate of sulfide ion generation, in turn, influenced precipitation kinetics and particle morphology. The types of supporting anions in solution also influenced the morphology of the particles produced. Monosize powders were hot pressed for various time, temperature and pressure combinations. Compacts aehieved near-theoretical density in less than 30 minutes at temperatures 850-900°C and applied pressures of about 70-105 MPa. The dominant densification mechanisms were identified at various stages of the process.

Citation Download Citation

Mufit Akinc and Ahmet Celikkaya "Synthesis And Hot Pressing Of ZnS Powders", Proc. SPIE 1112, Window and Dome Technologies and Materials, (11 September 1989); https://doi.org/10.1117/12.960764

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