Processing‐Related Fracture Origins: I, Observations in Sintered and Isostatically Hot‐Pressed A12O3/ZrO2 Composites
- 2 June 1983
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 66 (6) , 396-398
- https://doi.org/10.1111/j.1151-2916.1983.tb10068.x
Abstract
Strengths of sintered Al2O3/ZrO2 composites are much lower than those of hot‐pressed composites due to large flaws associated with the sintering process. Fractography has shown that cracklike internal surfaces are at the fracture origins of the sintered materials. It is hypothesized that the cracklike internal surfaces are developed as a result of differential sintering of agglomerates relative to their surrounding powder compact. Isostatic hot‐pressing of the sintered composites quickly eliminated the cracklike internal surface. Flaws responsible for fracture of the isostatically hot‐pressed composites were low‐density regions that are not as easily eliminated.Keywords
This publication has 5 references indexed in Scilit:
- Processing‐Related Fracture Origins: II, Agglomerate Motion and Cracklike Internal Surfaces Caused by Differential SinteringJournal of the American Ceramic Society, 1983
- Strength improvement of cemented carbides by hot isostatic pressing (HIP)Journal of Materials Science, 1978
- Processing Induced Sources of Mechanical Failure in CeramicsPublished by Springer Nature ,1978
- Some Effects of Aggregates and Agglomerates in the Fabrication of Fine Grained CeramicsPublished by Springer Nature ,1978
- Fine Particulates to Ultrafine-Grain CeramicsPublished by Springer Nature ,1970