Influence of composition on microstructure, mechanical properties and oxidation behavior of ZrB2/ZrAlC composite ceramics

doi:10.2109/jcersj2.19150

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	Influence of composition on microstructure, mechanical properties and oxidation behavior of ZrB2/ZrAlC composite ceramics
	Guo, Qilong 1,3,4; Juvencio Da Silva, Caio V.5; Lin, Mei 2; Luo, Sijun 3; Pei, Junjun 1; Wang, Xiaoqing 1; Li, Junguo 4; Zhang, Lianmeng 4
刊名	Journal of the Ceramic Society of Japan
	2019
卷号	127 期号:12 页码:878-886
关键词	Aluminum compounds Fracture toughness Mechanical properties Microstructure Oxidation Spark plasma sintering Vickers hardness
ISSN号	18820743
DOI	10.2109/jcersj2.19150
英文摘要	ZrB2/ZrAlC composite ceramics were successfully synthesized from Zr, Al, graphite and ZrB2 powders by using a spark plasma sintering method. The volume content of ZrAlC has a major impact on the fracture toughness. ZrAlC-rich (270 vol.%) composite ceramics exhibit much higher fracture toughness than do ZrB2-rich (260 vol.%) composite ceramics. The evidently larger ZrAlC grains in the ZrAlC-rich composite ceramics lead to a longer crack propagation path for toughening. Both the Vickers hardness and Young’s modulus of composite ceramics increase slightly with an increase in the ZrB2 volume content. The evident oxidation of composite ceramics at 1000°C results in the formation of Al18B4O33 and Al4B2O9. At 1200°C, the composite ceramics exhibit a fluffy and porous top oxidized layer composed of whiskers of Al18B4O33 and Al4B2O9 grains, and the thickness of the oxidized layer and oxidation mass gain increase with an increase in the ZrAlC volume content. The ZrB2-rich composite ceramics with less than 40 vol.% ZrAlC content do not exhibit apparently larger oxidation mass gain than does the pure ZrB2 ceramic after oxidation at 1200°C and higher temperatures. The composition-dependent microstructure and properties provide a comprehensive insight for the development of high-temperature composite ceramics based on ZrAlC and ZrB2. © 2019 The Ceramic Society of Japan. All rights reserved.
WOS研究方向	Materials Science
语种	英语
出版者	Ceramic Society of Japan
WOS记录号	WOS:000498837500004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151192]
专题	土木工程学院
作者单位	1.Key Laboratory of New Building Materials and Building Energy Efficiency of Gansu Province, School of Civil Engineering, Northwest Minzu University, Lanzhou; 730124, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka; 819–0395, Japan; 4.State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan; 430070, China; 5.Department of Mechanical Engineering, Federal Institute of Pernambuco, Caruaru; 55040–120, Brazil
推荐引用方式 GB/T 7714	Guo, Qilong,Juvencio Da Silva, Caio V.,Lin, Mei,et al. Influence of composition on microstructure, mechanical properties and oxidation behavior of ZrB2/ZrAlC composite ceramics[J]. Journal of the Ceramic Society of Japan,2019,127(12):878-886.
APA	Guo, Qilong.,Juvencio Da Silva, Caio V..,Lin, Mei.,Luo, Sijun.,Pei, Junjun.,...&Zhang, Lianmeng.(2019).Influence of composition on microstructure, mechanical properties and oxidation behavior of ZrB2/ZrAlC composite ceramics.Journal of the Ceramic Society of Japan,127(12),878-886.
MLA	Guo, Qilong,et al."Influence of composition on microstructure, mechanical properties and oxidation behavior of ZrB2/ZrAlC composite ceramics".Journal of the Ceramic Society of Japan 127.12(2019):878-886.