Investigation on the Wettability between Nb-Al Alloy and Porous Al2O3 Ceramics Prepared by Freeze Casting

被引：2
|
作者：
Chen Huanming [1 ]
Luo Min [2 ]
Li Xin [1 ]
Lin Xinxin [1 ]
Yang Dong [1 ]
机构：
[1] Ningxia Univ, Sch Phys & Elect Informat, Yinchuan 750021, Peoples R China
[2] Ningxia Univ, Sch Chem & Chem Engn, Yinchuan 750021, Peoples R China
来源：
MATERIALS AND MANUFACTURING, PTS 1 AND 2 | 2011年 / 299-300卷
基金：
中国国家自然科学基金;
关键词：
Wettability; Porous Al2O3 ceramics; Nb-Al alloy; Pressureless infiltration; ALUMINIDE-BASED COMPOSITES; NIOBIUM ALUMINIDES; MICROSTRUCTURE; SILICA;
D O I：
10.4028/www.scientific.net/AMR.299-300.687
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper adopted freeze casting method to prepare porous Al2O3 ceramic bodies with interconnected pore channels as a preform. The preform was pressureless infiltrated with Nb-Al binary alloy by using electromagnetic induction furnace. The results indicated that the Nb-Al melt solidified as a sphere-like body under the surface tension driving. It was difficult to obtain Nb-Al binary alloy matrix Al2O3 ceramic composites. However, the wettability between Nb-Al melt and porous Al2O3 ceramic bodies was improved obviously while the Ti and Cr alloying elements were added into Nb-Al binary alloy. Also, the resultant Nb-35Ti-20Al-10Cr melt was tilled into the interconnected pore channels existed in the Al2O3 preform by pressureless infiltration.
引用
收藏
页码：687 / +
页数：2
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