The Effect of Powder Mixing Procedures on α-SiAlON

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dc.contributor.authorShuba, Roman
dc.contributor.authorChen, I-Wei
dc.date2023-05-16T23:57:08.000
dc.date.accessioned2023-05-23T00:03:17Z
dc.date.available2023-05-23T00:03:17Z
dc.date.issued2005-10-03
dc.date.submitted2006-10-05T08:10:04-07:00
dc.description.abstractVarious procedures of mixing starting powders for hot-pressing α-SiAlON ceramics were studied. They included different milling methods (attrition milling, ball milling, and sonication), liquid medium (water, isopropyl alcohol, and pyridine), and atmospheres (ambient air and nitrogen). These mixing procedures resulted in markedly different densification behavior and fired ceramics. As the powders experienced increasing oxidation because of mixing, the densification temperature decreased, the amount of residual glass increased, and α-SiAlON was destabilized and replaced by ß-SiAlON and AlN polytypes during hot pressing. These effects were mitigated when pyridine, nitrogen, and sonication were used. Several protocols that yielded nearly phase-pure, glass-free dense α-SiAlON were thus identified.
dc.description.commentsCopyright The American Ceramic Society. Reprinted from Journal of the American Ceramic Society, Volume 89, Issue 3, 2006, pages 1110-1113.
dc.identifier.urihttps://repository.upenn.edu/handle/20.500.14332/40942
dc.legacy.articleid1119
dc.legacy.fulltexturlhttps://repository.upenn.edu/cgi/viewcontent.cgi?article=1119&context=mse_papers&unstamped=1
dc.source.issue103
dc.source.journalDepartmental Papers (MSE)
dc.source.peerreviewedtrue
dc.source.statuspublished
dc.titleThe Effect of Powder Mixing Procedures on α-SiAlON
dc.typeArticle
digcom.identifiermse_papers/103
digcom.identifier.contextkey212931
digcom.identifier.submissionpathmse_papers/103
digcom.typearticle
dspace.entity.typePublication
relation.isAuthorOfPublication64d20e7d-21dc-427a-bc85-717bb0378e67
relation.isAuthorOfPublication.latestForDiscovery64d20e7d-21dc-427a-bc85-717bb0378e67
upenn.schoolDepartmentCenterDepartmental Papers (MSE)
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