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Proceedings Paper

New ceramic coating technique using laser spraying process
Author(s): Koichi Tsukamoto; Takeshi Yanagisawa; Futodhi Uchiyama; Akira Obara; Mamoru Okutomi; Shinji Kimura; Akimasa Yamada; Hong Lie Shen; Zhongcheng Wang; Qinwo Shen; Udit Chatterjee; Gopal C. Bhar
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Paper Abstract

A new ceramic coating technique using a CO2 laser has been developed. A high power density laser beam passes near the substrate. Coating materials are supplied by an extra-high accuracy powder supply device and pass across the laser beam. The coating materials are melted in the laser beam and deposited on the substrate surface. A YSZ (Yttria Stabilized Zirconia) layer and a LaCoO3 layer are made for high temperature solid oxide fuel cells. The crystal structures of the coated layers are the same as that of the original coating materials. Superconducting BPSCCO ceramic films are also made with this process. The films show super-conductivity with Tc at 81 K. The Jc of the specimen is 440 A/cm2 at 77 K. We can easily handle and arrange not only metal but also refractory materials. By adopting a multi-axis robot and a surface treatment laser technique, the laser spraying method described here makes it possible to produce highly functional and three dimensional parts of devices directly from raw powder materials. Thus the proposed method will open the path to an unexplored field of key production technology.

Paper Details

Date Published: 15 August 1998
PDF: 9 pages
Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317941
Show Author Affiliations
Koichi Tsukamoto, Electrotechnical Lab. (Japan)
Takeshi Yanagisawa, Electrotechnical Lab. (Japan)
Futodhi Uchiyama, Kogakuin Univ. (Japan)
Akira Obara, Electrotechnical Lab. (Japan)
Mamoru Okutomi, Electrotechnical Lab. (Japan)
Shinji Kimura, Electrotechnical Lab. (Japan)
Akimasa Yamada, Electrotechnical Lab. (Japan)
Hong Lie Shen, Shanghai Institute of Metallurgy (China)
Zhongcheng Wang, Shanghai Institute of Metallurgy (China)
Qinwo Shen, Shanghai Institute of Metallurgy (China)
Udit Chatterjee, Univ. of Burdwan (India)
Gopal C. Bhar, Univ. of Burdwan (India)

Published in SPIE Proceedings Vol. 3550:
Laser Processing of Materials and Industrial Applications II
ShuShen Deng; S. C. Wang, Editor(s)

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