Fracture Behavior of SiC-Whisker-Reinforced Barium Aluminosilicate Glass-Ceramic Matrix Composites |
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| Authors: | Feng Ye Jue Ming Yang Li Tong Zhang Wan Cheng Zhou Yu Zhou Ting Chuan Lei |
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| Affiliation: | School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China;State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an Shaanxi 710072, People's Republic of China |
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| Abstract: | Barium aluminosilicate (BAS) glass-ceramic composites reinforced with various volume percents (0, 10, 20, 30, 40 vol%) of SiC whiskers were fabricated by hot pressing. The microstructure, the whisker/matrix interface structure, the phase constitution, and the mechanical properties of the composites were systematically studied by means of SEM, TEM, and XRD techniques as well as by indentation crack microfracture and single-edge-notched-beam bend testing. It was demonstrated that the incorporation of SiC whiskers could significantly increase the flexural strength and fracture toughness of BAS glass-ceramic matrices. The addition of active Al2O3 to the BAS matrix reduced the amount of SiO2 in the matrix, forming needlelike mullite, which further improved the mechanical properties. |
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| Keywords: | fracture whiskers aluminosilicates |
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