材料科学
烧结
多孔性
抗弯强度
微观结构
立方氧化锆
纳米复合材料
复合材料
纳米颗粒
抗压强度
陶瓷
纳米技术
作者
Ebrahim Yousefi,Morteza Adineh,Mohammad Bagher Askari
出处
期刊:Anti-corrosion Methods and Materials
[Emerald (MCB UP)]
日期:2018-02-12
卷期号:65 (2): 138-145
被引量:1
标识
DOI:10.1108/acmm-03-2017-1773
摘要
Purpose The purpose of this paper is to fabricate zirconia-nano alumina porous nanocomposites with different amount of alumina (0-30 Wt.%). Specimens were prepared by solid state sintering method at different temperature (1,400-1,700°C). Design/methodology/approach Effects of processing temperature and amount of alumina on microstructure, distribution of nanoparticles, flexural and compressive strengths, micro-hardness and densification were investigated. Findings Results indicated that interpenetration of particles and their contacts increased by increasing sintering temperature. As a consequence of better particles contacts and microstructure coarsening, the porosity decreased. As alumina nanoparticles content increased, the amount of porosity decreased conversely and distribution of pores become more uniform. Simultaneous enhancement of temperature and alumina nanoparticles content caused an improvement of flexural and compressive strengths because of an improvement of sintering process resulted from porosity reduction. Increase in hardness and density were observed as porosity values diminished and alumina nanoparticles were distributed well at micro zirconia grain boundaries as a result of increasing the process temperature. Originality/value This article contains original research.
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