ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 60, (2) 99 - 104 (2016)


EFFECT OF NANOPOWDER ADDITION ON THE FLEXURAL STRENGTH OF ALUMINA CERAMIC - A WEIBULL MODEL ANALYSIS
 
Guo Daidong 1,2, Liu Shiquan 1
 
1 School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China
2 State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, China

Keywords: Weibull distribution model, Al₂O₃ ceramic, Nanopowder, Flexural strength
 

Alumina ceramics were prepared either with micrometer-sized alumina powder (MAP) or with the addition of nanometer-sized alumina powder (NAP). The density, crystalline phase, flexural strength and the fracture surface of the two ceramics were measured and compared. Emphasis has been put on the influence of nanopowder addition on the flexural strength of Al₂O₃ ceramic. The analysis based on the Weibull distribution model suggests the distribution of the flexural strength of the NAP ceramic is more concentrated than that of the MAP ceramic. Therefore, the NAP ceramics will be more stable and reliable in real applications.


Record in: Scopus | Web of Science

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doi: 10.13168/cs.2016.0015
 
 
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