DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김도경 | ko |
dc.contributor.author | 이승건 | ko |
dc.date.accessioned | 2013-03-02T20:44:26Z | - |
dc.date.available | 2013-03-02T20:44:26Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1998-01 | - |
dc.identifier.citation | 한국분말야금학회지, v.5, no.1, pp.15 - 22 | - |
dc.identifier.issn | 1225-7591 | - |
dc.identifier.uri | http://hdl.handle.net/10203/75444 | - |
dc.description.abstract | The effect of α/β phase on the mechanical properties and contact damage of silicon nitrides Si3N4) was investigated. Silicon nitride materials were prepared from two starting powders, at selective increasing hot-pressing temperatures to coarsen the microstructures: (i) from relatively coarse α-phase powder, essentially equiaxed α-Si3N4 grains, with limited, slow transformation to β-Si3N4 grain; (ii) from relatively fine α-phase powder, a more rapid transformation to β-Si3N4, with attendant grain elongation. The resulting micro-structure thereby provided a spectrum of α/β phase ratios, grain sizes, and grain shapes. Fracture strength, hardness, and toughness were measured, and contact damage and strength degradation after indentation were investigated by Hertzian indentation using spherical indenter. A brittle to ductile transition in Si3N4 depended on α/β phase ratio as well as grain size. Silicon nitride with elongated β grains showed a superior, contact damage resistance. | - |
dc.language | Korean | - |
dc.publisher | 한국분말야금학회 | - |
dc.title | 질화규소의 기계적 성질 및 접촉 손상 : I. Alpa/Beta 상분율의 영향 | - |
dc.title.alternative | A Study on the Mechanical Properties and Contact Damage of Silicon Nitrides : 1. Effect of ${\alpha}/{\beta}$ Phase Fraction | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 5 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 15 | - |
dc.citation.endingpage | 22 | - |
dc.citation.publicationname | 한국분말야금학회지 | - |
dc.contributor.localauthor | 김도경 | - |
dc.contributor.nonIdAuthor | 이승건 | - |
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