Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61455
Title: Laser surface alloying of copper with titanium : Part I. Electrical wear resistance in dry condition. Part II. Electrical wear resistance in wet and corrosive condition
Authors: Kwok, CT
Wong, PK
Man, HC 
Keywords: Electrical sliding wear
Hardness
Intermetallic phases
Laser surface alloying
Issue Date: 2016
Publisher: Elsevier
Source: Surface and coatings technology, 2016, v. 297, p. 58-73 How to cite?
Journal: Surface and coatings technology 
Abstract: A high-power diode laser was used for alloying titanium on commercially pure copper (cp Cu) for enhancing electrical sliding wear in air. Microstructure and phases present were analyzed using scanningelectron microscopy and X-ray diffraction, respectively. Electrical sliding wear tests in air were conducted with a pin-on-disc tribometer with andwithout electric current. The electrical slidingwear resistances of all laser-alloyed samples are significantly enhanced by 3 orders of magnitude as compared with cp Cu. Among the laser-alloyed samples, the one with 70 wt.% Ti and average hardness of 661 HV0.2 possesses the highest electrical sliding wear resistance. The enhancement in electrical wear resistance in air is attributed to the presence of Cu-Ti intermetallic phases (IMPs) and solid solution hardening.
URI: http://hdl.handle.net/10397/61455
ISSN: 0257-8972
EISSN: 1879-3347
DOI: 10.1016/j.surfcoat.2016.04.008
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