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Development of Non-Chromate Surface Technology for Evaporators
Technical Paper
2002-01-0947
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Evaporator surface treatment technology is important for air conditioners in that it provides resistance to rust, odor and bacteria, while imparting hydrophilicity. However, since the first-layer chromate coating contains hexavalent chromium, an environmental loading substance whose stricter regulation is under consideration, development of an alternative technology is needed. We selected titanium coating for the first-layer non-chromate coating, and added an inhibitor to the second-layer multifunctional resin coating to impart a self-healing effect without undermining the other functions. As a result, we succeeded in developing a non-chromate surface technology that ensures the same level of rust resistance and other qualities as with conventional technology.
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Authors
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Citation
Kobayashi, K., Sugawara, H., Nonogaki, M., Osako, T. et al., "Development of Non-Chromate Surface Technology for Evaporators," SAE Technical Paper 2002-01-0947, 2002, https://doi.org/10.4271/2002-01-0947.Also In
References
- Sugawara Hiroyoshi Takenaka Osamu Kaneko Hideaki “Surface Treatment for Car Air Conditioners” Hyoumen Gijutsu 49 812 1998
- Mizuno Hiroyoshi Uchiyama Kazuhisa Sato Shigeyuki Sakakibara Kiyomi Sato Ryosuke “Multifunctional Surface Treatment for Car Air Conditioners” SAE Technical Paper Series, 980284 1998
- Suda Arata Asari Mitsuyori “Behavior and Mechanism of Corrosion Protection for Galvanized Steels by Self-healing Effect of Chromate Coatings” Zairyo-to-Kankyo 46 95 1997