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Abstract:
采用压痕-强度法测定了Al2O3/BN复相陶瓷的阻力曲线.结果表明:该复相陶瓷具有良好的耐接触损伤性能,呈现出上升的阻力曲线效应,显示出增强的抗裂纹扩展能力.而对应的Al2O3单相陶瓷的阻力曲线为一水平直线.分析认为:超细弥散的h-BN与基体之间模量及热膨胀失配会在h-BN的弱结合层间产生微开裂,有助于抑制主裂纹的失稳扩展,这是Al2O3/BN复相陶瓷具有优良耐损伤性能和上升型R曲线效应的主要原因.
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硅酸盐学报
ISSN: 0454-5648
Year: 2005
Issue: 6
Volume: 33
Page: 723-726
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: 4
Chinese Cited Count:
30 Days PV: 7
Affiliated Colleges: