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The use of monoclinic ZrO2 as an additive improves the mechanical properties of TiB2 -based composites without the use of stabilizers. In particular, TiB2 -30% ZrO2 compacts exhibited a transverse rupture strength of 800 MN/m2 , few pores, and a KI c of 5 MPa·m1/2 . The high strength and toughness are thought to result mainly from the presence of partially stabilized tetragonal ZrO2 and from solid solution of (TiZr)B2 formed in sintering. 相似文献
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介绍了基于PC(PersonalComputer)的Fluke45万用表自动测试系统的实现方法。详细讨论了系统构成,利用VisualBasic完成了通信模块、数据管理模块程序设计,实现了PC对Fluke45万用表的测量数据采集、存储及信号波形显示功能。 相似文献
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