Post-densification behaviour of pressureless sintered silicon nitride materials : relationship between properties and microstructure
作者： L. Themelin , M. Desmaison-Brut , M. Billy , J. Crampon
DOI: 10.1016/0272-8842(92)90041-B
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摘要: Abstract Two typical pressureless sintered Si 3 N 4 -based ceramics, using either Y 2 O and Al as additives for the first grade (SiYA1ON type) or MgO second (SiMgAlON), were hot isostatically pressed (HIPed) at 1700°C 180 MPa. The effect of time on post-densification, microstructure, mechanical properties oxidation behaviour both materials investigated. best performances are obtained after a HIP treatment just30 min has been applied, while characteristics continually improve with up to h.
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