用改性纳米SiC粉体强化灰铸铁的性能

详细信息

Properties of Gray Cast Iron Strengthened by Surface Modified SiC Nano-powders

摘要: 研究了不同含量的改性纳米SiC粉体对灰铸铁显微组织、力学性能及耐磨性能的影响.结果表明:与原灰铸铁材料相比,经改性纳米SiC粉体强化处理后的灰铸铁组织明显细化,珠光体含量增加,力学性能、耐磨性能明显提高,当纳米SiC粉体含量为0.1%时,强化材料的性能提高最大,其抗拉强度提高了22.7%,硬度增加了9.3%.
- 改性纳米SiC粉体 /
- 灰铸铁 /
- 力学性能 /
- 耐磨性能
Abstract: The effects of different contents of surface modified SiC nano-powders on the microstructure,mechanical properties and wear resistance of gray cast iron were studied.Compared with original gray cast iron,the reinforced materials are characterized with finer microstructure,increased content of pearlite,improved mechanical properties and greatly improved wear resistance.With the content of 0.1% of SiC nano-powders,the tensile strength of the reinforced material is improved by 22.7%,the hardness is increased by 9.3%,and the wear resistance is much better than that of the original material.
- surface modified SiC nano-powder /
- gray cast iron /
- mechanical property /
- wear resistance

[1]	朱正吼,陈其善.铸造SiC/钢基复合材料中粒子分布特点[J].热加工工艺,1995,(2):8-9.
[2]	冯可芹,杨屹,王一三,等.铁基复合材料的制备技术与展望[J].机械工程材料,2002,26(12):9-12.
[3]	刘君武,丁厚福,郑治祥.SiCp/Fe复合材料断口分析[J].理化检验-物理分册,2003,39(4):184-187.
[4]	张立德,牟季美.纳米材料和纳米结构[M].北京:科学出版社,2001.5-265.
[5]	EI-Eskandarany M S.Mechanical solid state mixing for synthesizing of SiCp/Al nanocomposites[J].Journal of Alloys and Compounds,1998,279(2):263-271.
[6]	肖永亮,李亚利,梁勇.纳米SiC颗粒增强铝基复合材料研究[J].金属学报,1996,32(6):658-662.
[7]	李顺林,卢翔,朱正吼,等.金属基纳米复合材料的制备技术研究[J].南京航空航天大学学报,2003,35(5):572-578.