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Title: Microstructure and electrochemical corrosion behavior of laser gladded NiFeBSi-Si3N4 alloy on H13 steel surface
Authors: Zhang, CH
Zhang, S
Zhang, N
Man, HC 
Keywords: Electrochemical corrosion
H13 steel
Laser cladding
NiFeBSi-Si3N4 alloy
Issue Date: 2006
Publisher: 中國學術期刊(光盤版)電子雜誌社
Source: 金屬熱處理 (Heat treatment of metals), 2006, v. 31, no. 9, p. 49-51 How to cite?
Journal: 金屬熱處理 (Heat treatment of metals) 
Abstract: Laser surface cladded NiFeBSi-Si3N4 and NiFeBSi alloys layers on H13 steel surface were produced by continuous wave CO2 laser irradiation, respectively. The effects of Si3 N4on 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-Si3N4 cladded 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-Si3N4 alloy layer exhibited higher resistance to pitting corrosion in industrial die coating solution. The passive film resistances increased and the passive current density decreased.
ISSN: 0254-6051
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