Cr_3Si/Cr_(13)Ni_5Si_2金属间化合物合金组织与高温滑动磨损性能的研究  

Microstructure and High-temperature Sliding Wear Resistance of a Cr_3Si/Cr_(13)Ni_5Si_2 Intermetallic Alloy

作　　者：张立强[1] 王华明[1] 

机构地区：[1]北京航空航天大学,北京100083

出　　处：《稀有金属材料与工程》2004年第5期512-514,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50071004);北京市自然科学基金(2022012);航空基础科学基金(02H51011);国家高技术研究发展计划课题(2002AA331030)资助项目

摘　　要：利用水冷铜模激光熔炼炉制得了由初生枝晶Cr3Si和枝晶间Cr3Si/Cr13Ni5Si2共晶组成的金属间化合物合金。利用OM,SEM,TEM,EDS和XRD分析了该金属间化合物的显微组织,在400℃,500℃和600℃条件下测试了其耐磨性能。结果表明,由于Cr3Si和Cr13Ni5Si2硬度高、原子键合力强、组织细小、均匀,在高温滑动磨损条件下具有优良的耐磨性能。A Cr-Ni-Si intermetallic alloy consisting of Cr3Si primary dendrites and interdendritic Cr3Si/Cr13Ni5Si2 eutectics was fabricated using the self-designed laser melting furnace. The microstructures of the intermetallic compound were analysised by means of OM, SEM, TEM, EDS and XRD. The wear resistance was tested under the high-temperature (400℃, 500℃ and 600℃) sliding wear conditions. The Cr3Si/Cr13Ni5Si2 intermetallic alloy has good high-temperature sliding wear resistance because of the high hardness and strong atomic bonds.

关 键 词：金属间化合物合金 金属硅化物 激光熔炼 高温磨损 

分 类 号：TG131[一般工业技术—材料科学与工程]