Tribological properties of high velocity arc sprayed FeAlCr/Ni wrapped Cr3C2 coatings

Wei Pu Xu, Bin Shi Xu, Wei Zhang, Yi Xiong Wu, Wei Min Liu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

THT07-135 high temperature wear machinery was used to analyse tribological properties of high velocity arc sprayed FeAl, Fe-Al/Cr3C2, FeAlCr/Ni wrapped Cr3C2 composite coatings. The wear scar morphologies and compositions of coatings were analyzed by SEM, TEM and XRD methods. Results show that FeAlCr/Ni wrapped Cr3C2 composite coatings have typically layer shaped structure and relatively high bonding strength and hardness. The wear resistance of coatings decreases in the range from room temperature to 250°C, and it changes little in the range from 250°C to 550°C, then wear resistance of coatings rises again after 550°C. Shell tribology behavior is mainly the high temperature wear mechanism of coatings. The addition of Cr3C2 can improve the wear resistance of coatings highly; the addition of Ni can also relatively enhance bonding strength and wear properties of coatings.

Original languageEnglish
Pages (from-to)1671-1676
Number of pages6
JournalZhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
Volume14
Issue number10
StatePublished - Oct 2004
Externally publishedYes

Keywords

  • FeAlCr/Ni wrapped CrC composite coating
  • High velocity arc spray
  • Tribological characteristic

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