断熱層形成用のＡｌ合金製エンジン部品表面の処理方法

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专利权人:

マツダ株式会社

发明人:

岡田 健太,角島 信司,甲斐 裕之,南場 智,坂手 宣夫

申请号：

JP20130249890

公开号：

JP6060882(B2)

申请日:

2013.12.03

申请国别(地区):

日本

年份:

2017

代理人:

摘要：

PROBLEM TO BE SOLVED: To increase the adhesion of a coating film to a base material 19 made of an Al alloy.SOLUTION: Provided is a method for treating the surface of a base material made of an Al alloy, including: an alkali etching step of contacting the surface of the base material 19 made of an Al alloy with an etchant for a prescribed time; a step in which the surface contacted with the etchant is water-washed and is dried; and a step in which a coating film is formed on the surface after that, and the alkali etching is controlled in such a manner that surface roughness Rz after the drying step reaches 12.8 μm or more and also apparent contact angle with water reaches 30° or lower.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/