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OALib Journal期刊
ISSN: 2333-9721
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Influence of Nb2O5 on the Mechanical Performances and Toughening Mechanism of ZrO_2 in ZTM-Al2O3
Nb2O5对ZTM-Al2O3性能及ZrO2增韧机制的影响

Keywords: Nb2O5,mullite,ZrO2,microcrack toughening
Nb2O5
,二氧化锆,微裂纹增韧,ZTM-Al2O3,陶瓷

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Abstract:

The paper discussed the influence of Nb2O5 on the mechanical properties of ZTM Al2O3 and the toughening mechanisms of ZrO2 in the material. The results show that Nb2O5 can remarkably increase the m-ZrO2 content in the ceramics while decreasing the t-ZrO2 content, The mechanical properties can be greatly improved by Nb2O5 addition, and the square of the toughness is in proportion to m-ZrO2 content. Microcrack toughening enhanced by increasing m-ZrO2 content is the main factor contributing to the improvement

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