Shanghai Journal of Stomatology

Shanghai Journal of Stomatology ›› 2015, Vol. 24 ›› Issue (3): 280-282.

• Basic Study • Previous Articles     Next Articles

Energy dispersive spectrum analysis of surface compositions of selective laser melting cobalt-chromium alloy fabricated by different processing parameters

QIAN Liang1,ZENG Li1,WEI Bin1,GONG Yao2   

  1. 1.Department of Stomatology Special Consultation Clinic, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011,China;
    2. Department of Orthodontics, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011,China
  • Received:2015-03-13 Online:2015-06-20 Published:2015-07-24
  • Supported by:
    "973" Program (2012CB910401) and Research Fund of Science and Technology Committee of Shanghai Municipality (12441903001 and 13140902701).

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Abstract: PURPOSE: To fabricate selective laser melting cobalt-chromium alloy samples by different processing parameters, and to analyze the changes of energy dispersive spectrum(EDS) on their surface. METHODS: Nine groups were set up by orthogonal experimental design according to different laser powers,scanning speeds and powder feeding rates(laser power:2500~3000 W, scanning speed: 5~15 mm/s, powder feeding rate: 3~6 r/min). Three cylinder specimens(10 mm in diameter and 3 mm in thickness)were fabricated in each group through Rofin DL 035Q laser cladding system using cobalt-chromium alloy powders which were developed independently by our group.Their surface compositions were then measured by EDS analysis. RESULTS: Results of EDS analysis of the 9 groups fabricated by different processing parameters(Co：62.98%-67.13%,Cr：25.56%-28.50%,Si：0.49%-1.23%) were obtained. They were similar to the compositions of cobalt-chromium alloy used in dental practice. CONCLUSIONS: According to EDS results, the surface compositions of the selective laser melting cobalt-chromium alloy samples are stable and controllable, which help us gain a preliminary sight into the range of SLM processing parameters.

Key words: Selective laser melting, Cobalt-chromium alloy, Surface composition, Energy dispersive spectrum analysis

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