公开(公告)号：KR1020070082601A

公开(公告)日：2007-08-22

申请号：KR1020060015360

申请日：2006-02-17

Applicant: 현대자동차주식회사

Inventor： 신광선 ,  정화철 ,  박재선

IPC: C25D11/30

CPC classification number: C25D11/30 ,  C25D11/024

Abstract: A method for surface treatment of a magnesium alloy, which can form a ceramic coating film with excellent corrosion resistance and high hardness on a surface of a magnesium alloy by generating plasma discharge on the surface of the alloy using an alkaline electrolyte containing specific ions, is provided. A method for surface treatment of a magnesium alloy comprises the steps of: preparing a magnesium alloy sample with a predetermined size; adding a solution containing Si^4+ ions and F^- ions into an alkaline electrolyte; dipping the magnesium alloy sample into the alkaline electrolyte; and forming a ceramic coating film on the surface of the sample by applying an electric current to the magnesium alloy sample while varying process conditions such as the electric current ratio and the waveform, thereby generating plasma discharge on the surface of the sample.

Abstract translation: 通过使用含有特定离子的碱性电解质在合金表面上产生等离子体放电，可以在镁合金表面上形成具有优异的耐腐蚀性和高硬度的陶瓷涂层的镁合金表面处理方法， 提供。 镁合金的表面处理方法包括以下步骤：制备具有预定尺寸的镁合金样品; 向碱性电解液中加入含有Si ^ 4 +离子和F ^ - 离子的溶液; 将镁合金样品浸入碱性电解液中; 以及通过在改变诸如电流比和波形的工艺条件的同时向镁合金样品施加电流在样品的表面上形成陶瓷涂层膜，从而在样品的表面上产生等离子体放电。