Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18476
Title: Enhancement of cavitation erosion and corrosion resistance of brass by laser surface alloying with Ni-Cr-Si-B
Authors: Tam, KF
Cheng, FT
Man, HC 
Keywords: Brass
Cavitation erosion
Corrosion
Laser surface alloying
Ni-Cr-Si-B
Issue Date: 2002
Publisher: Elsevier
Source: Surface and coatings technology, 2002, v. 149, no. 1, p. 36-44 How to cite?
Journal: Surface and coatings technology 
Abstract: Brass (Cu-38% Zn-1.5% Pb) was surface-alloyed with a hardfacing Ni-Cr-Si-B powder (Ni-16.5% Cr-3.5% Si-3.8% B-15.5% Fe-<1% C) using a high-power continuous-wave Nd-YAG laser with different processing parameters for improving the cavitation erosion and corrosion resistance in 3.5 wt.% NaCl solution. The cavitation erosion resistance Re (defined as the reciprocal of the mean erosion rate) of the alloyed layer ranged from 6.10- to 9.06-fold that of the brass substrate, and was found to be closely related to the hardness of the alloyed layer. The corrosion resistance was also improved, as indicated by a noble shift in the pitting potential and a reduction in the corrosion current density. The difference in the cavitation erosion and corrosion behavior of various specimens is discussed in relation to their microstructures and structures via studies using optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX) and X-ray diffractometry (XRD). The present study also indicated that it is difficult to achieve maximum improvement in cavitation erosion and corrosion resistance simultaneously.
URI: http://hdl.handle.net/10397/18476
ISSN: 0257-8972
EISSN: 1879-3347
DOI: 10.1016/S0257-8972(01)01414-1
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

21
Last Week
0
Last month
0
Citations as of Jul 29, 2017

WEB OF SCIENCETM
Citations

17
Last Week
0
Last month
0
Citations as of Aug 13, 2017

Page view(s)

31
Last Week
4
Last month
Checked on Aug 14, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.