Two-step preparation of AlON transparent ceramics with powder synthesized by aluminothermic reduction and nitridation method

IMR OpenIR

	Two-step preparation of AlON transparent ceramics with powder synthesized by aluminothermic reduction and nitridation method
	Y. Wang; X. M. Xie; J. Q. Qi; J. Wang; D. Wu; X. F. Guo; N. Wei; T. C. Lu
	2014
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	29 期号:19 页码:2325-2331
摘要	The aluminothermic reduction and nitridation method using microsized Al powder and nanosized alumina powder was employed to fabricate AlON powder under N-2 atmosphere. Single-phase aluminum oxynitride (AlON) can be prepared at a relatively low temperature (1700 degrees C) with a holding time of 3 h. The powder is ball milled, doped with different amounts of Y2O3 (0.1-0.9 wt%) as a sintering additive, and then shaped into pellets. The pellet sintering is carried out at two relatively low temperatures (1860 and 1880 degrees C) for 10 h. The transmittance and hardness of the obtained samples varies as the amount of Y2O3 varies. The sample sintered under optimal conditions can reach an ultimate transmittance of 65% with 2 mm thickness. The Vickers hardness of highly transparent AlON ceramic is about 15.95 +/- 0.17 GPa, indicating that our method has a promising future in transparent AlON ceramic production. The sintering promoting mechanisms of Y2O3 are also discussed in detail.
部门归属	[wang, ying ; xie, xiumin ; qi, jianqi ; wei, nian ; lu, tiecheng] sichuan univ, coll phys sci & technol, chengdu 610064, sichuan, peoples r china. [wang, ying ; qi, jianqi ; wei, nian] sichuan univ, key lab high energy dens phys, minist educ, chengdu 610064, sichuan, peoples r china. [xie, xiumin] sichuan univ, key lab radiat phys & technol, minist educ, chengdu 610064, sichuan, peoples r china. [wang, jun] sichuan univ sci & engn, sch sci, zigong 643000, sichuan, peoples r china. [wu, di ; guo, xiaofeng] univ calif davis, peter a rock thermochem lab, davis, ca 95616 usa. [wu, di ; guo, xiaofeng] univ calif davis, neat oru, davis, ca 95616 usa. [lu, tiecheng] chinese acad sci, int ctr mat phys, shenyang 110015, liaoning, peoples r china. ; qi, jq (reprint author), sichuan univ, coll phys sci & technol, chengdu 610064, sichuan, peoples r china. ; qijianqi@scu.edu.cn ; lutiecheng@vip.sina.com
关键词	Aluminum Oxynitride Carbothermal Reduction Sintering Behavior Phase Reaction Thermodynamics Parameters System Model Aln
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73431
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Wang,X. M. Xie,J. Q. Qi,et al. Two-step preparation of AlON transparent ceramics with powder synthesized by aluminothermic reduction and nitridation method[J]. Journal of Materials Research,2014,29(19):2325-2331.
APA	Y. Wang.,X. M. Xie.,J. Q. Qi.,J. Wang.,D. Wu.,...&T. C. Lu.(2014).Two-step preparation of AlON transparent ceramics with powder synthesized by aluminothermic reduction and nitridation method.Journal of Materials Research,29(19),2325-2331.
MLA	Y. Wang,et al."Two-step preparation of AlON transparent ceramics with powder synthesized by aluminothermic reduction and nitridation method".Journal of Materials Research 29.19(2014):2325-2331.