Mechanical and thermal properties of ZrC/ZTA composites prepared by spark plasma sintering

doi:10.1016/j.ceramint.2021.11.189

	Mechanical and thermal properties of ZrC/ZTA composites prepared by spark plasma sintering
	Li, Shufen 1,2,3; Niu, Lijuan 1,2,3; Zhu, Yabin 1,3; Chai, Jianlong 1,3; Wang, Zhiguang 1,3; Xie, Erqing 2
刊名	CERAMICS INTERNATIONAL
	2022-03-01
卷号	48 期号:5 页码:6453-6460
关键词	Microstructure Mechanical and thermal properties Zirconium carbide Zirconia toughened alumina
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2021.11.189
通讯作者	Zhu, Yabin(zhuyabin@impcas.ac.cn) ; Wang, Zhiguang(zhgwang@impcas.ac.cn)
英文摘要	In the present work, the influence of sintering temperature and particle size of pristine ZrC particles on the microstructure, mechanical properties, and thermal properties of ZrC/ZTA ceramic composites are investigated. Specimens consolidated by spark plasma sintering at different sintering temperatures from 1500 degrees C to 1800 degrees C. XRD results revealed that alpha-Al2O3, t-ZrO2, ZrC, and a small quantity of m-ZrO2 phases are present in the composites. The microstructure of mu m-ZrC/ZTA is found to be more compact than nm-ZrC/ZTA composites. There is an apparent increase in the average grain size with the increase in temperature. From the micrographs of fracture surfaces, step-wise transgranular fracture structures are observed. Relative densities and Vickers hardness are in proportion to sintering temperature from 1500 degrees C to 1700 degrees C. The maximum Vickers hardness of 1919 HV1 is obtained for mu m-ZrC/ZTA composites. Indentation fracture toughness displays a gradual rise when the temperature rises from 1500 degrees C to 1700 degrees C, then deteriorates at 1800 degrees C for both nm-ZrC/ZTA and mu m-ZrC/ZTA ceramic composites. The maximum fracture toughness values for nm-ZrC/ZTA and mu m-ZrC/ZTA are 6.75 MPa m1/2 and 6.83 MPa m1/2, respectively. The thermal conductivity of the specimens decreased gradually as the temperature increases from 100 degrees C to 1000 degrees C. The obtained results indicated that the 1700 degrees C is the optimized sintering temperature where mu m-ZrC/ZTA composites have excellent performance on microstructure, mechanical properties, and thermal properties than nm-ZrC/ZTA composites.
资助项目	Program of the Innovation Center of Nuclear Materials for National Defense Industry of China[ICNM-2021-ZH-09] ; National Natural Science Foundation of China[11505247] ; National Natural Science Foundation of China[U1832206]
WOS关键词	CERAMIC TOOL MATERIAL ; FRACTURE-TOUGHNESS ; PARTICLE-SIZE ; MICROSTRUCTURE ; CONDUCTIVITY ; EVOLUTION ; NANOCOMPOSITES ; TRANSFORMATION ; TEMPERATURE ; DIFFUSIVITY
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000752868300002
资助机构	Program of the Innovation Center of Nuclear Materials for National Defense Industry of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/142108]
专题	中国科学院近代物理研究所
通讯作者	Zhu, Yabin; Wang, Zhiguang
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Shufen,Niu, Lijuan,Zhu, Yabin,et al. Mechanical and thermal properties of ZrC/ZTA composites prepared by spark plasma sintering[J]. CERAMICS INTERNATIONAL,2022,48(5):6453-6460.
APA	Li, Shufen,Niu, Lijuan,Zhu, Yabin,Chai, Jianlong,Wang, Zhiguang,&Xie, Erqing.(2022).Mechanical and thermal properties of ZrC/ZTA composites prepared by spark plasma sintering.CERAMICS INTERNATIONAL,48(5),6453-6460.
MLA	Li, Shufen,et al."Mechanical and thermal properties of ZrC/ZTA composites prepared by spark plasma sintering".CERAMICS INTERNATIONAL 48.5(2022):6453-6460.