固相反应法制备镨改性钛酸铅陶瓷的力学行为和断裂力学

IF 18.6 1区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Advanced Ceramics Pub Date : 2013-08-29 DOI:10.1155/2013/280605

Vishal Singh, Shivani Suri, K. Bamzai

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引用次数: 6

摘要

采用固相反应法制备了组成= 0.04,0.06,0.08,0.10的镨改性钛酸铅陶瓷，采用压痕诱发硬度测试方法。在0.245 ~ 4.90 N的载荷范围内产生了压痕。显微硬度随载荷呈非线性变化，最好用Hays和Kendall定律提出的牛顿阻力压力概念来解释。研究了裂纹扩展、断裂韧性()、脆性指数()和屈服强度()，了解了Pr含量对各力学参数的影响。负载无关值随着镨含量的增加而增加。

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Mechanical Behaviour and Fracture Mechanics of Praseodymium Modified Lead Titanate Ceramics Prepared by Solid-State Reaction Route

The praseodymium modified lead titanate ceramics with composition where = 0.04, 0.06, 0.08, and 0.10 prepared by solid-state reaction technique were subjected to indentation induced hardness testing method. The indentations were induced in the applied load ranging from 0.245 N to 4.90 N. The microhardness varies nonlinearly with load and was best explained by the concept of Newtonian resistance pressure as proposed by Hays and Kendall’s law. Crack propagation, fracture toughness (), brittleness index (), and yield strength () were studied to understand the effect of Pr content on various mechanical parameters. The load independent values were found to increase with the increase in praseodymium content.

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来源期刊

Journal of Advanced Ceramics MATERIALS SCIENCE, CERAMICS-

CiteScore

21.00

自引率

10.70%

发文量

290

审稿时长

14 days

期刊介绍： Journal of Advanced Ceramics is a single-blind peer-reviewed, open access international journal published on behalf of the State Key Laboratory of New Ceramics and Fine Processing (Tsinghua University, China) and the Advanced Ceramics Division of the Chinese Ceramic Society. Journal of Advanced Ceramics provides a forum for publishing original research papers, rapid communications, and commissioned reviews relating to advanced ceramic materials in the forms of particulates, dense or porous bodies, thin/thick films or coatings and laminated, graded and composite structures.