离心成型法制备Al_2O_3/Ni功能梯度材料及性能表征  

PROCESSING OF AL_2O_3/Ni FUNCTIONALLY GRADIENT COMPOSITES BY CENTRIFUGAL COMPACTION

作　　者：赵志江[1] 孙旭东[1] 修稚萌[1] 潘新[1] 李晓东[1] 霍地[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004

出　　处：《中国腐蚀与防护学报》2007年第6期363-366,共4页Journal of Chinese Society For Corrosion and Protection

基　　金：国家杰出青年基金资助项目(50425413)

摘　　要：用离心成型法制备了Al2O3/Ni功能梯度材料,并研究了料浆调制工艺、制备参数和梯度材料的力学性能。结果表明,良好的料浆的最佳流动性配比为粘结剂(聚乙二醇)含量为2mass%、固相含量为63vol.%、球磨时间为36h。经离心成型—真空烧结(1400℃,2h)可获得致密、组元宏观连续过渡的Al2O3/Ni梯度材料。该复合材料孔隙率低,力学性能好,抗弯强度可达321MPa。In this paper,A1203/Ni functionally gradient composites were fabricated by centrifugal compaction method and the slurry preparation ,centrifugal compaction mechanism and mechanical properties of the compos- ites were investigated. The results showed that slurry with good fluidity can be produced when the binder con- tent, solid content and milling time was 2 mass% ,63 vol.% and 36 h ,respectively.A12O3/Ni functionally gradient composites were produced by vacuum sintering at 1400 ℃ for 2 hours.The composites revealed relatively better mechanical properties with lower pore content and higher bending strength of 321 MPa.

关 键 词：功能梯度材料 A12O3/Ni 离心成型 抗弯强度 

分 类 号：TB321[一般工业技术—材料科学与工程]