Evaluation of creep property of AS800 silicon nitride from as-processed surface regions

H. T. Lin, S. B. Waters, K. L. More, J. Wimmer, C. W. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

Tensile creep studies were carried out to evaluate the creep performance of AS800 silicon nitride samples extracted from the surface and bulk regions of as-processed billets at 1350°C in air. The objective of this study was to understand the creep properties of the silicon nitride in the as-processed surface region and determine if they are comparable to those obtained from the bulk region. The results indicated that samples from the as-processed surface region exhibited higher creep rates and shorter lifetimes as compared with those obtained from the bulk region. The poor creep performance of material from the as-processed surface region was due to the higher content of glassy phase enriched with oxygen and sintering additive elements.

Original languageEnglish
Title of host publicationCeramic Engineering and Science Proceedings
PublisherAmerican Ceramic Society
Pages175-182
Number of pages8
Edition3
ISBN (Print)9781119040439
DOIs
StatePublished - 2001
Event25th Annual Conference on Composites, Advanced Ceramics, Materials and Structures: A - Cocoa Beach, FL, United States
Duration: Jan 21 2001Jan 27 2001

Publication series

NameCeramic Engineering and Science Proceedings
Number3
Volume22
ISSN (Print)0196-6219

Conference

Conference25th Annual Conference on Composites, Advanced Ceramics, Materials and Structures: A
Country/TerritoryUnited States
CityCocoa Beach, FL
Period01/21/0101/27/01

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