Densification and microstructure evolution of reactively sintered transparent spinel ceramics

doi:10.1016/j.ceramint.2018.03.109

	Densification and microstructure evolution of reactively sintered transparent spinel ceramics
	Han, Dan 1; Zhang, Jian 2; Liu, Peng 3; Li, Gui ; Wang, Shiwei 2
刊名	CERAMICS INTERNATIONAL
	2018
卷号	44 期号:10 页码:11101
关键词	Spinels Reactive sintering Microstructure Densification Optical properties
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.03.109
英文摘要	Reactive sintering is an effective and simple method to prepare transparent spinel ceramics. In this research, transparent MgO center dot nAl(2)0(3) (0.98 >= n >= 2) spinel ceramics were prepared via reactive sintering in air followed by hot isostatic press (HIP), using MgO and gamma-Al2O3 powders as raw materials. The influence of composition on densification and microstructure evolution was systemically investigated. More importantly, the relationship between microstructure of presintered samples and final properties of transparent ceramics was singled out. Thermodynamically stable large pores were easily generated in magnesia-rich and stoichiometric samples after presintering in air, causing severe abnormal grain growth during the HIP treatment and poor optical quality of the resulting samples. The presintering temperature of alumina-rich samples widely varied with composition. No large pores were observed in the presintered sample, which was beneficial for the elimination of residual pores in the following HIP process. Highly transparent spinel ceramics with n = 1.1 and 1.3 were successfully fabricated with the transmittance above 84% even at the short wavelength of 400 nm, close to the theoretical value.
学科主题	Materials Science, Ceramics
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000432768200012
资助机构	The authors gratefully acknowledge financial supports from National Key R&D Program of China (No. 2017YFB0310501) and Key Development Program of Chinese Academy of Sciences (No. Y62YZ4140G). ; The authors gratefully acknowledge financial supports from National Key R&D Program of China (No. 2017YFB0310501) and Key Development Program of Chinese Academy of Sciences (No. Y62YZ4140G).
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24843]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent Optofunct Inorgan Mat, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Surperfine, Shanghai 200050, Peoples R China 4.Jiangsu Normal Univ, Sch Phys & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Han, Dan,Zhang, Jian,Liu, Peng,et al. Densification and microstructure evolution of reactively sintered transparent spinel ceramics[J]. CERAMICS INTERNATIONAL,2018,44(10):11101, 11108.
APA	Han, Dan,Zhang, Jian,Liu, Peng,Li, Gui,&Wang, Shiwei.(2018).Densification and microstructure evolution of reactively sintered transparent spinel ceramics.CERAMICS INTERNATIONAL,44(10),11101.
MLA	Han, Dan,et al."Densification and microstructure evolution of reactively sintered transparent spinel ceramics".CERAMICS INTERNATIONAL 44.10(2018):11101.