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Proceedings Paper

Synthesis And Hot Pressing Of ZnS Powders
Author(s): Mufit Akinc; Ahmet Celikkaya
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Paper 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.

Paper Details

Date Published: 11 September 1989
PDF: 8 pages
Proc. SPIE 1112, Window and Dome Technologies and Materials, (11 September 1989); doi: 10.1117/12.960764
Show Author Affiliations
Mufit Akinc, Iowa State University (United States)
Ahmet Celikkaya, Iowa State University (United States)

Published in SPIE Proceedings Vol. 1112:
Window and Dome Technologies and Materials
Paul Klocek, Editor(s)

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