New ceramic coating technique using laser spraying process

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

doi:10.1117/12.317941

15 August 1998 New ceramic coating technique using laser spraying process

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

Author Affiliations +

Proceedings Volume 3550, Laser Processing of Materials and Industrial Applications II; (1998) https://doi.org/10.1117/12.317941
Event: Photonics China '98, 1998, Beijing, China

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 T_c at 81 K. The J_c 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.

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Koichi Tsukamoto, Takeshi Yanagisawa, Futodhi Uchiyama, Akira Obara, Mamoru Okutomi, Shinji Kimura, Akimasa Yamada, Hong Lie Shen, Zhongcheng Wang, Qinwo Shen, Udit Chatterjee, and Gopal C. Bhar "New ceramic coating technique using laser spraying process", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); https://doi.org/10.1117/12.317941

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