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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Indentation induced testing studies on lanthanum modified lead titanate ceramics
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Indentation induced testing studies on lanthanum modified lead titanate ceramics

机译:镧改性钛酸铅陶瓷的压痕诱导试验研究

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摘要

Results of indentation induced Vicker's microhardness, internal stress, and fracture toughness studies in the load range of 0.1-10N on lanthanum modified lead titanate (PT) ceramics bearing composition Pb_(1-x)La_xTi_(0.96)Fe_(0.02)Mo_(0.02)O_3, where x = 0.02, 0.05, 0.10, 0.15, and 0.20 are presented. The load dependence of Vicker's hardness number (VHN) is explained on the basis of Hays and Kendall's law. Load independent value of VHN is worked out by the application of Hays and Kendall's law for different compositions of lanthanum modified ceramics and the same is shown to increase with the increase in lanthanum substitution. Internal stress, fracture toughness, and brittleness index for these samples have also been calculated using microindentation technique.
机译:负载成分为Pb_(1-x)La_xTi_(0.96)Fe_(0.02)Mo_(0.02)的镧改性钛酸铅(PT)陶瓷在0.1-10N载荷范围内的压痕诱导维氏显微硬度,内应力和断裂韧性的研究结果O_3,其中x = 0.02、0.05、0.10、0.15和0.20。维氏硬度值(VHN)的载荷依赖性是根据海斯和肯德尔定律进行解释的。 VHN的独立于负载的值是通过应用Hays和Kendall定律针对不同组成的镧改性陶瓷得出的,并且显示出随着镧取代量的增加,VHN也会增加。这些样品的内部应力,断裂韧性和脆性指数也已经使用微压痕技术进行了计算。

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