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Effects of pore connectivity and microstructure on mechanical performance of ZrO2scaffolds and PMMA-infiltrated ZrO2composites
Wang, Feng1; Xiong, Yaoyang2; Ning, Congqin1; Sun, Jian2; Zeng, Yuping1
2017
发表期刊Journal of Alloys and Compounds
ISSN09258388
卷号728页码:189-195
摘要To combine the advantages of ceramics and resins, ceramic/resin composites have been explored for dental restorations in recent years. ZrO2scaffold is considered as a promising candidate porous matrix for polymer-infiltrated composites due to its excellent biocompatibility and mechanical properties. In the present study, porous ZrO2scaffolds were prepared by adding pore-forming agent and sintered at 1200–1400 °C, the effects of porosity, pore connectivity and microstructure on the mechanical performance of ZrO2scaffolds and the corresponding PMMA-infiltrated ZrO2composites were investigated. To obtain a good pore connectivity and favorite mechanical properties of ceramic scaffolds, the content of pore-forming agent and sintering temperature should be well controlled. The flexural strength of ZrO2scaffolds was simply affected by the total porosity and sintering temperature. While the flexural strength of the infiltrated composites was dominated by both the strength of the porous scaffolds and the amount of closed pores. Crack bridging in the infiltrated composites is one of the important factors to the enhanced mechanical strength. The highest strength of 265.5 MPa was achieved in the composites infiltrated from the 1400°C-sintered scaffolds with an initial pore forming agent content of 30 wt%. © 2017 Elsevier B.V.
DOI10.1016/j.jallcom.2017.08.277
EI入藏号20173604128310
EI主题词Scaffolds (biology)
EI分类号405.1 Construction Equipment - 461.1 Biomedical Engineering - 461.9.1 Immunology - 462.3 Dental Equipment and Supplies - 691.2 Materials Handling Methods - 804.2 Inorganic Compounds - 812.1 Ceramics - 815.1 Polymeric Materials - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25458
专题中国科学院上海硅酸盐研究所
作者单位1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.Department of Prosthodontics, Ninth Peoples Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai; 200011, China
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Wang, Feng,Xiong, Yaoyang,Ning, Congqin,et al. Effects of pore connectivity and microstructure on mechanical performance of ZrO2scaffolds and PMMA-infiltrated ZrO2composites[J]. Journal of Alloys and Compounds,2017,728:189-195.
APA Wang, Feng,Xiong, Yaoyang,Ning, Congqin,Sun, Jian,&Zeng, Yuping.(2017).Effects of pore connectivity and microstructure on mechanical performance of ZrO2scaffolds and PMMA-infiltrated ZrO2composites.Journal of Alloys and Compounds,728,189-195.
MLA Wang, Feng,et al."Effects of pore connectivity and microstructure on mechanical performance of ZrO2scaffolds and PMMA-infiltrated ZrO2composites".Journal of Alloys and Compounds 728(2017):189-195.
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