发明授权
US4221639A Aluminium alloy cylinder and manufacturing method thereof 失效
铝合金圆筒及其制造方法

Aluminium alloy cylinder and manufacturing method thereof
摘要:
An aluminium alloy cylinder includes a cylinder body and a cylinder bore therein. An iron layer is electrodeposited on the wall surface of the cylinder bore by means of a high cathode current density so that a multiplicity of randomly oriented channels are formed in the electrodeposited iron layer.
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