Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/32670
Title: Method of laser casting copper-based composites
Authors: LU, LI 
FUH, JERRY YING 
WONG, YOKE SAN 
CHEN, ZHENDA
LIM, GNIAN CHER
Issue Date: 20-Apr-2004
Source: LU, LI,FUH, JERRY YING,WONG, YOKE SAN,CHEN, ZHENDA,LIM, GNIAN CHER (2004-04-20). Method of laser casting copper-based composites. ScholarBank@NUS Repository.
Abstract: This invention presents the process of direct laser casting of copper alloys: Cu--X (where X=Ni, Fe, W;) and their composites Cu--Y and Cu--X--Y (Y=WC, TiC, Ti+C) from powders prepared using mechanical mixing and ball milling processes. Since the metallic powder is combined with a low melting point Cu metal, which has good thermal and electrical conductivity, the combination allows the powder mixture to be melted by CO.sub.2 laser and re-solidified into a part with good mechanical properties and conductivity. The laser casting process for the Cu-based in-situ formation and the material systems formed using the said method have been developed. The process can be used to fabricate complex three-dimensional objects by multi-layer overlapping and the material systems can be used to build rapid tooling due to the properties of good thermal conductivity and low wear rate.
URI: http://scholarbank.nus.edu.sg/handle/10635/32670
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