Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti(3)AlC(2) Suspensions

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	Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti(3)AlC(2) Suspensions
	Z. Q. Sun; M. S. Li; L. F. Hu; X. P. Lu; Y. C. Zhou
	2009
发表期刊	Journal of the American Ceramic Society
ISSN	0002-7820
卷号	92 期号:8 页码:1695-1702
摘要	The surface chemistry and dispersion properties of aqueous Ti(3)AlC(2) suspension were studied in terms of hydrolysis, adsorption, electrokinetic, and rheological measurements. The Ti(3)AlC(2) particle had complex surface hydroxyl groups, such as equivalent to Ti-OH,=Al-OH, and -OTi-(OH)(2), etc. The surface charging of the Ti(3)AlC(2) particle and the ion environment of suspensions were governed by these surface groups, which thus strongly influenced the stability of Ti(3)AlC(2) suspensions. PAA dispersant was added into the Ti(3)AlC(2) 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. Ti(3)AlC(2) 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 Ti(3)AlC(2) 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.
部门归属	[sun, ziqi; li, meishuan; hu, longfei; lu, xinpo; zhou, yanchun] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [sun, ziqi; hu, longfei; lu, xinpo] chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;yczhou@imr.ac.cn
关键词	Liquid Reaction Synthesis Poly(Acrylic Acid) Nitride Hydrolysis Stability Silica Carbide Powders Ftir
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32315
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Sun,M. S. Li,L. F. Hu,et al. Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti(3)AlC(2) Suspensions[J]. Journal of the American Ceramic Society,2009,92(8):1695-1702.
APA	Z. Q. Sun,M. S. Li,L. F. Hu,X. P. Lu,&Y. C. Zhou.(2009).Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti(3)AlC(2) Suspensions.Journal of the American Ceramic Society,92(8),1695-1702.
MLA	Z. Q. Sun,et al."Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti(3)AlC(2) Suspensions".Journal of the American Ceramic Society 92.8(2009):1695-1702.