全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
材料工程  2010 

激光熔覆-活化屏等离子体复合处理层耐磨性能研究

, PP. 37-41

Keywords: 激光熔覆,活化屏等离子体处理,耐磨性

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了研究激光熔覆层性能对活化屏等离子体氮化处理层耐磨性能的影响,采用两种铁基合金粉末(Fe90和Fe314)在45钢基体表面进行激光熔覆,然后进行等离子体氮化复合处理,测试涂层干摩擦条件下的磨损性能。研究结果表明复合处理后,Fe90激光熔覆层的硬度由750HV提高到1350HV,Fe314激光熔覆层的硬度由540HV提高到927HV;在相同载荷(30N)下,Fe90复合处理层的耐磨性提高到1.2倍,而Fe314复合处理的耐磨性降低为原来的42%;复合处理耐磨性能提高的关键在于激光熔覆层与氮化层的合理搭配,熔覆层能够提供足够的支撑。

References

[1]  徐滨士,朱绍华.表面工程的理论与技术[M].北京:国防工业出版社,1991.540-565.
[2]  KWIETNIEWSKI C,DONG H,STROHACKER T,et al.Duplex surface treatment of high strength Timetal 550 alloy towards high load-bearing capacity[J].Surface and Coatings Technology,2001,139:284-292.
[3]  WEI C Y,CHEN F S.Characterization on multi-layer fabricated by TRD and plasma nitriding[J].Materials Chemistry and Physics,2005,90:178-184.
[4]  ZHAO C,LI C X,DONG H,et al.Study on the active screen plasma nitriding and its nitriding mechanism[J].Surface and Coatings Technology,2006,201:2320-2325.
[5]  MENTHE E,BULAK A,OLFE J,et al.Improvement of mechanical properties of austenitic stainless steel after plasma nitriding[J].Surface and Coatings Technology,2000,133-1134:259-263.
[6]  HEDAYATI M K,MABHOUBI F,NICKCHI T.Comparison of conventional and active screen plasma nitriding of hard chromium electroplated steel[J].Vacuum,2009,83(8):1123-1128.
[7]  郭绍义,李兴俊,杨秋合,等.激光熔覆WC-Ni/TiC涂层的组织和摩擦磨损性能研究[J].材料工程,2008,(6):72-75.
[8]  耿林,孟庆武,郭立新.钛合金表面上两种镍基合金粉的激光熔覆研究[J].材料工程,2005,(12):45-52.
[9]  DONG S Y,XU B S,WANG Z J,et al.Laser remanufacturing technology and its applications[J].Proceedings of SPIE,2007,68251N:1-5.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133