Preparation and synthesis thermokinetics of novel Al-Ti-C-La composite master alloys

doi:10.1016/j.jallcom.2018.10.241

	Preparation and synthesis thermokinetics of novel Al-Ti-C-La composite master alloys
	Ding, Wanwu 1,2; Xu, Chen 1,2; Hou, Xingang 1,2; Zhao, Xiaoyan 1,2; Chen, Taili 1,2; Zhao, Wenjun 1,2; Xia, Tiandong 1,2; Qiao, Jisen 1,2
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2019-03-05
卷号	776 页码:904-911
关键词	Al-Ti-C-La master alloy Preparation Grain refinement Thermodynamics Kinetics
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2018.10.241
英文摘要	The new type of Al-Ti-C-La master alloy was prepared by commercial pure Al, Ti powder, graphite powder, Al powder and La2O3 powder by aluminum melt in-situ reaction method. The microstructure and the effect on commercial pure aluminum of Al-Ti-C-La master alloy have been studied by means of X-ray diffraction (XDR), scanning electron microscopy (SEM) equipped with energy-dispersive spectrometry (EDS). The synthesis thermodynamics and kinetics of Al-Ti-C-La master alloy were analyzed. The experiment shows that Al-Ti-C-La master alloy is composed of Al, Al3Ti, TiC and Ti2Al20La. The refining performance of the prepared Al Ti C La master alloy is obviously better than that of Al-Ti-C master alloy when the addition of rare earth oxide La2O3 is 10 wt% and the preparation temperature is 930 degrees C. The analysis of thermodynamic calculation and the process of kinetics demonstrate that, in the preparation process of Al-Ti-C-La master alloy, firstly, Al reacts with Ti to produce Al3Ti, C reacts with Ti and Al3Ti to form TiC based on the aluminothermy reaction. Rare earth oxide La(2)O(3 )and C powder react with Ti powder and O(2 )in the air occur to generate CO, TiC, [La] atoms and LaC2. [La] atoms adsorb on the surface of Al3Ti to form the new rare earth compounds Ti2Al20La. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51661021][51665033] ; Gansu key research and development program[18YF1GA061]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000453826200102
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32043]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Ding, Wanwu
作者单位	1.State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Ding, Wanwu,Xu, Chen,Hou, Xingang,et al. Preparation and synthesis thermokinetics of novel Al-Ti-C-La composite master alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,776:904-911.
APA	Ding, Wanwu.,Xu, Chen.,Hou, Xingang.,Zhao, Xiaoyan.,Chen, Taili.,...&Qiao, Jisen.(2019).Preparation and synthesis thermokinetics of novel Al-Ti-C-La composite master alloys.JOURNAL OF ALLOYS AND COMPOUNDS,776,904-911.
MLA	Ding, Wanwu,et al."Preparation and synthesis thermokinetics of novel Al-Ti-C-La composite master alloys".JOURNAL OF ALLOYS AND COMPOUNDS 776(2019):904-911.