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Mechanical Properties and Reliability of Li 2 O‐Stabilized β″‐Alumina Ceramics: Effect of Synthesizing Method
Author(s) -
Ahmadi Moghadam Hajar,
Paydar Mohammad Hossein
Publication year - 2016
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12586
Subject(s) - materials science , weibull modulus , microstructure , ceramic , fracture toughness , composite material , zeta potential , weibull distribution , flexural strength , grain size , toughness , nanotechnology , nanoparticle , statistics , mathematics
Li 2 O‐stabilized β″‐alumina powder has been synthesized by the solid‐state and double‐zeta processes. It was shown that by the double‐zeta process, the β″‐alumina fraction of sintered samples was 10% higher, showing around 99% of β″‐alumina fraction. Using β″‐alumina powder produced by the double‐zeta process, the sintered density improved, microstructure was more uniform and leads to improvement in hardness, strength and Weibull modulus due to more uniform microstructure and absence of abnormal grain growth. The higher fracture toughness of the solid‐state‐processed samples could be due to crack deflection mechanism.