颗粒增强钢基耐磨复合材料的制备、组织与性能  

Fabrication, Microstructures and Properties of Steel Matrix Composites Reinforced with Ceramic Particles

作　　者：郑开宏[1,2] 赵散梅[1,3] 陈亮[2] 王娟[1] 

机构地区：[1]广州有色金属研究院金属加工与成型技术研究所,广东广州510650 [2]西安交通大学金属材料强度国家重点实验室,陕西西安710049 [3]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《铸造》2011年第11期1094-1098,共5页Foundry

摘　　要：采用铸渗法成功制备ZTA（ZrO2增韧A12O3）陶瓷颗粒增强合金钢基耐磨复合材料。制备方法：将陶瓷颗粒与自制粘结剂混合填充到具有一定型腔的模具中，加压凝固后获得多孔连通的陶瓷预制体；将预制体固定到铸型中，浇注合金钢，浇注温度1500～1560℃，金属液铸渗预制体获得局部复合的耐磨复合材料。结果表明：铸渗效果良好，陶瓷颗粒与合金钢基体界面结合紧密，无缩孔、裂纹等缺陷；陶瓷颗粒在复合材料中的体积分数42％～56％；在三体磨料磨损条件下，ZTA／合金钢复合材料的抗三体磨料磨损性能是合金钢基体的4．37倍。ZTA （ZrO2 toughened AI203） ceramic particles reinforced alloy steel matrix composites have been prepared successfully by casting infiltration process. The experimental details are： firstly, mix the ceramic particles and self-made agglutinant, and fill the mixture into a die, then obtain the porous networks ceramic preform after pressing and solidification; secondly, rivet the preform in sand mould and cast at 1 500-1 560 ~C; then wearable composites were prepared successfully by metal liquid infiltrating porous networks ceramic preform. The results show that the interface between ceramic particles and alloy steel matrix is compact, and there are no defects such as shrinkage, crack and so on; the volume fraction abrasive resistance of ZTNalloy steel composites of ceramic particle is 42%-56%; the three-body s 4.37 times higher than that of alloy steel matrix.

关 键 词：复合材料 铸渗法 ZTA 三体磨损 

分 类 号：TB331[一般工业技术—材料科学与工程]