Purwadi Raharjo
Okayama University
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Publication
Featured researches published by Purwadi Raharjo.
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture | 2007
Akira Okada; Yoshiyuki Uno; Kensuke Uemura; Purwadi Raharjo; Joe McGeough
Abstract Wide-area electron beam (WAEB) irradiation was proposed as a new surface-finishing process for orthopaedic titanium alloy products. The surface roughness could be reduced from Rz = 10 μm to Rz = 0.7 μm all over the wide circular surface within a diameter of 60 mm in just a few minutes under optimum electron beam conditions. In this paper, the surface structure and the surface characteristics of WAEB-irradiated surface are discussed. The crystal grain size becomes small and the microstructure in the surface vicinity changes under WAEB irradiation. The corrosion resistance and the repellency can be improved simultaneously with the surface smoothing. Therefore, the WAEB irradiation method enables highly efficient surface smoothing and surface modification of orthopaedic titanium alloy.
Precision Engineering-journal of The International Societies for Precision Engineering and Nanotechnology | 2005
Yoshiyuki Uno; Akira Okada; Kensuke Uemura; Purwadi Raharjo; Toshihiko Furukawa; Kosaku Karato
Journal of Materials Processing Technology | 2007
Yoshiyuki Uno; Akira Okada; Kensuke Uemura; Purwadi Raharjo; Sadao Sano; Z. Yu; S. Mishima
Journal of Materials Processing Technology | 2004
Akira Okada; Yoshiyuki Uno; Noriyasu Yabushita; Kensuke Uemura; Purwadi Raharjo
Journal of The Japan Society for Precision Engineering | 2003
Akira Okada; Yoshiyuki Uno; Noriyasu Yabushita; Kensuke Uemura; Purwadi Raharjo
Journal of the Japan Society for Precision Engineering, Contributed Papers | 2005
Akira Okada; Yoshiyuki Uno; Keita Nishina; Kensuke Uemura; Purwadi Raharjo; Sadao Sano; Zhanbo Yu
6th International Conference European Society for Precision Engineering and Nanotechnology, EUSPEN 2006 | 2006
Yoshiyuki Uno; Akira Okada; Kensuke Uemura; Purwadi Raharjo
Archive | 2014
Purwadi Raharjo; Simon Regis Louis Lancaster-Larocque; Kensuke Uemura; Collin D. Chan
Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 | 2005
Akira Okada; Yoshiyuki Uno; Keita Nishina; Kensuke Uemura; Purwadi Raharjo; Sadao Sano; Zhanbo Yu
3rd International Conference on Leading Edge Manufacturing in 21st Century, LEM 2005 | 2005
Akira Okada; Yoshiyuki Uno; Keita Nishina; Kensuke Uemura; Purwadi Raharjo; Sadao Sano; Zhanbo Yu
