Quenching of Ceramic Coated Steels by Scanning Laser

Abstract:

In our previous study, it has been shown that improvement of the adhesive strength and substrate hardness of ceramic coated steels without compromising the film hardness can be achieved by applying laser quenching. In the present research, in order to quench a larger area of ceramic coated steel uniformly and efficiently, a high power diode laser equipped with a galvano-scanner unit was used in the laser heat treatment process. The scanning laser irradiation conditions to achieve uniformly quenched substrates without any surface damage were investigated for 3 kinds of ceramic-coated steels: CrAlN, TiAlN and CrN. The film hardness and adhesive strength of the laser irradiated regions were evaluated. It is shown that scanning laser quenching after coating effectively improved the mechanical properties for larger area of ceramic-coated steels.

• Periodical: Advanced Materials Research (Volume 566)
• Pages: 427-430
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.566.427
• Online since: September 2012
• Authors: Hirotaka Tanabe, Keiji Ogawa, Yui Izumi, Takuya Saraie, Mitsuhiro Gotoh, Hideki Hagino, Takuto Yamaguchi
• Keywords: Adhesive Strength, Hardness, Heat Treatment, Laser, Thin Film

References

[1] K. Ogawa, et al., Transactions of the Japan Society of Mechanical Engineers, Part A, 75 (2009), pp.1172-1176

[2] H. Tanabe, et al., Applied Mechanics and Materials [978-3-03785-380-1], (2012), pp.175-180