Microstructure and electrochemical corrosion behavior of laser gladded NiFeBSi-Si3N4alloy on H13 steel surface

Chun Hua Zhang, Song Zhang, Ning Zhang, Hau Chung Man

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Laser surface cladded NiFeBSi-Si3N4and NiFeBSi alloys layers on H13 steel surface were produced by continuous wave CO2laser irradiation, respectively. The effects of Si3N4on the microstructure and electrochemical corrosion behavior of the laser treated layer were studied using OM, SEM, XRD and potentiodynamic polarization tests. The results show that good metallurgical bonding is formed between the NiFeBSi-Si3N4cladded layers and the H13 steel substrate. The modified surface cladding layer consists of a fine dendritic structure and without porosity and crack-free. Compared with laser cladded of NiFeBSi alloy, the NiFeBSi-Si3N4alloy layer exhibited higher resistance to pitting corrosion in industrial die coating solution. The passive film resistances increased and the passive current density decreased.
Original languageChinese (Simplified)
Pages (from-to)49-51
Number of pages3
JournalJinshu Rechuli/Heat Treatment of Metals
Volume31
Issue number9
Publication statusPublished - 1 Sep 2006

Keywords

  • Electrochemical corrosion
  • H13 steel
  • Laser cladding
  • Microstructure
  • NiFeBSi-Si N alloy 3 4

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys

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