Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti3AlC2 Suspensions

doi:10.1111/j.1551-2916.2009.03136.x

CORC > 金属研究所 > 中国科学院金属研究所

	Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti3AlC2 Suspensions
	Sun, Ziqi 1,2; Li, Meishuan 1; Hu, Longfei 1,2; Lu, Xinpo 1,2; Zhou, Yanchun 1
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	2009-08-01
卷号	92 期号:8 页码:1695-1702
ISSN号	0002-7820
DOI	10.1111/j.1551-2916.2009.03136.x
通讯作者	Zhou, Yanchun(yczhou@imr.ac.cn)
英文摘要	The surface chemistry and dispersion properties of aqueous Ti3AlC2 suspension were studied in terms of hydrolysis, adsorption, electrokinetic, and rheological measurements. The Ti3AlC2 particle had complex surface hydroxyl groups, such as equivalent to Ti-OH,=Al-OH, and -OTi-(OH)(2), etc. The surface charging of the Ti3AlC2 particle and the ion environment of suspensions were governed by these surface groups, which thus strongly influenced the stability of Ti3AlC2 suspensions. PAA dispersant was added into the Ti3AlC2 suspension to depress the hydrolysis of the surface groups by the adsorption protection mechanism and to increase the stability of the suspension by the steric effect. Ti3AlC2 suspensions with 2.0 dwb% PAA had an excellent stability at pH=similar to 5 and presented the characteristics of Newtonian fluid. Based on the well-dispersed suspension, dense Ti3AlC2 materials were obtained by slip casting and after pressureless sintering. This work provides a feasible forming method for the engineering applications of MAX-phase ceramics, wherein complex shapes, large dimensions, or controlled microstructures are needed.
资助项目	National Outstanding Young Scientist Foundation ; Natural Sciences Foundation of China[50232040] ; Natural Sciences Foundation of China[50302011] ; Natural Sciences Foundation of China[90403027] ; Natural Sciences Foundation of China[50772114] ; Natural Sciences Foundation of China[50832008]
WOS研究方向	Materials Science
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000268704600009
资助机构	National Outstanding Young Scientist Foundation ; Natural Sciences Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/96076]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhou, Yanchun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Sun, Ziqi,Li, Meishuan,Hu, Longfei,et al. Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti3AlC2 Suspensions[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2009,92(8):1695-1702.
APA	Sun, Ziqi,Li, Meishuan,Hu, Longfei,Lu, Xinpo,&Zhou, Yanchun.(2009).Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti3AlC2 Suspensions.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,92(8),1695-1702.
MLA	Sun, Ziqi,et al."Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti3AlC2 Suspensions".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 92.8(2009):1695-1702.