Anodizing method for aluminum alloy by using high-frequency switching electrolysis Suzuki Motor Corporation

Format:

Book

Conference/Event

Author/Creator:

Tanaka, H., author.

Contributor:

Asoh, H.

Fujita, M.

Muramatsu, H.

Ono, S.

Yamamoto, T.

Conference Name:

Small Engine Technology Conference & Exposition (2011-11-08 : Sapporo, Japan)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Tokyo, JAPAN Society of Automotive Engineers of Japan 2011

Summary:

Anodizing is applied to improve the durability and the corrosion resistance of aluminum alloy parts of engines and car bodies. Generally, anodic oxide film is formed using direct current anodizing (DCA). However, in the case of anodizing high silicon aluminum alloy cast parts, it is difficult to derive uniform film thickness distribution. Furthermore, it takes a long treatment time which causes low productivity. In this study, the authors have developed an anodizing method by using high-frequency switching anodizing (HSA) to solve these problems. The growth process of anodic oxide film is susceptible to the metallographic structure. Thus, the typical DCA application to the high silicon aluminum alloy produces a non-uniform film thickness, while HSA has the potential to form uniform film without being affected by metallographic structure. Moreover, the current density of HSA is higher than that of DCA which reduces treatment time to 1/5 as the film formation enhances. Our investigation is to apply HSA to the mass produced engine pistons that require both high durability and low cost

Notes:

Vendor supplied data

Publisher Number:

2011-32-0645

Access Restriction:

Restricted for use by site license