傅乐

副教授

入职时间:2019-03-21

所在单位:材料科学与工程学院

学历:博士研究生毕业

办公地点:中南大学校本部米塔尔楼404室

性别:男

联系方式:fule2019@csu.edu.cn

学位:博士学位

在职信息:在职

毕业院校:瑞典乌普萨拉大学

   
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Understanding microstructure-mechanical properties relationship in ZrO2–SiO2 nanocrystalline glass-ceramics: The effect of ZrO2 content

发布时间:2022-03-02

点击次数:

DOI码:10.1016/j.msea.2022.142904

发表刊物:Materials Science and Engineering: A

摘要:The content of crystalline phase plays a significant role in manipulating the microstructure and mechanical properties of glass-ceramics. This study aims at exploring the optimum content of crystalline phase in ZrO2–SiO2 nanocrystalline glass-ceramics (NCGCs) in terms of obtaining the highest mechanical properties. To this end, the mechanical properties of ZrO2–SiO2 NCGCs with 70 mol%, 75 mol%, 80 mol% ZrO2 were tested and compared with those of the previously prepared NCGCs with ZrO2 content ranging from 35 mol% to 65 mol%. Results showed that 65 mol% was the optimum content of ZrO2 in terms of obtaining the highest flexural strength. The flexural strength of NCGCs with ZrO2 content over 65 mol% was lower than that of the NCGCs with 65 mol% ZrO2. This was because the NCGC with 65 mol% ZrO2 had a homogenous microstructure, with ZrO2 nanocrystallites homogeneously distributed in an amorphous SiO2 matrix. Whereas, when ZrO2 content was increased to 75 mol%, ZrO2 nanocrystallites were not homogeneously distributed in the SiO2 matrix anymore. The formation of SiO2 “holes/canyon” due to ZrO2 grain coalescence resulted in the decrease of flexural strength. The fracture mechanism and wear properties of the NCGCs were also investigated.

合写作者:Bohan Wang, Junjie Song, Guofu Xu, Qiuan Sun, Jiwu Huang, Chenglong Xu, Hakan Engqvist, Wei Xia

第一作者:Le Fu*

论文类型:期刊论文

卷号:840

页面范围:142904

是否译文:

发表时间:2022-03-01

收录刊物:SCI

发布期刊链接:https://www.sciencedirect.com/science/article/pii/S0921509322003124

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