典型文献
Microstructure and tribological behavior of the nickel-coated-graphite-reinforced Babbitt metal composite fabricated via selective laser melting
文献摘要：
To improve the properties of Babbitt alloys, Ni-coated-graphite-reinforced Babbitt metal composite specimens were prepared via se-lective laser melting (SLM), and the composites microstructures, mechanical properties, and tribological properties were studied through scan-ning electron microscopy (SEM), shear testing, and dry-sliding wear testing, respectively. The results showed that most of the nickel-coated graphite (NCGr) particles were distributed at the boundaries of laser beads in the cross section of the SLM composite specimens. Microcracks and microvoids formed at the boundaries of laser beads where NCGr particles accumulated. Both the shear strength and the friction coefficient of the SLM composite specimens decreased with increasing NCGr content. The shear strength and the friction coefficient of the SLM compos-ite sample with 6wt％ NCGr were approximately 20％ and 33％ lower than those of the NCGr-free sample, respectively. The friction mechan-ism changed from plastic shaping furrow to brittle cutting with increasing NCGr content. A practical Babbitt material with a lower friction coefficient and sufficient strength can be obtained by controlling the NCGr particle dispersion; this can be achieved by choosing NCGr particles with a thicker Ni layer and precisely controlling the laser energy input during the SLM process.
文献关键词：
中图分类号：
作者姓名：
Xingke Zhao;Xusheng Hai
作者机构：
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
文献出处：
引用格式：
[1]Xingke Zhao;Xusheng Hai-.Microstructure and tribological behavior of the nickel-coated-graphite-reinforced Babbitt metal composite fabricated via selective laser melting)[J].矿物冶金与材料学报,2022(02):320-326
A类：
NCGr,Microcracks
B类：
Microstructure,tribological,behavior,nickel,coated,graphite,reinforced,Babbitt,metal,fabricated,via,selective,laser,melting,To,improve,properties,alloys,specimens,were,prepared,SLM,composites,microstructures,mechanical,studied,through,scan,ning,electron,microscopy,shear,testing,dry,sliding,wear,respectively,results,showed,that,most,particles,distributed,boundaries,beads,cross,section,microvoids,formed,where,accumulated,Both,strength,friction,coefficient,decreased,increasing,content,sample,6wt,approximately,lower,than,those,free,ism,changed,from,plastic,shaping,furrow,brittle,cutting,practical,material,sufficient,obtained,by,controlling,dispersion,this,achieved,choosing,thicker,layer,precisely,energy,input,during,process
AB值：
0.460422
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
