Composite article of magnesium material and resin component, and method for producing said composite article

Abstract

To be able to efficiently produce a resin component on a magnesium material. [Solution] A composite article is produced by forming an anodic oxide film on one surface of a magnesium material as a consequence of immersing the magnesium material into an electrolyte solution and applying a voltage, and by joining a resin component to the magnesium material by using the anodic oxide film. The electrolyte solution is formed by dissolving sodium dihydrogen phosphate and sodium hydroxide in pure water. The weight mixture ratio (R1) of sodium dihydrogen phosphate and sodium hydroxide is 1:2≦R1<2:1, and the voltage is between 20 and 50 V.

We claim: 
     
         1 . A method for producing a composite article of magnesium material and resin component, comprising the steps of:
 immersing a magnesium material into an electrolyte solution formed by dissolving sodium dihydrogen phosphate and sodium hydroxide in pure water;   applying a voltage upon said magnesium material immersed with said electrolyte solution, so as to form an anodic oxide film on the surface of said magnesium material; and   filling part of the resin component into the multiple pores on said anodic oxide film so as to join said magnesium material with said resin component.   
     
     
         2 . The method defined in  claim 1 , wherein the weight mixture ratio R1 of said sodium dihydrogen phosphate and said sodium hydroxide is 1:2≦R1<2:1. 
     
     
         3 . The method defined in  claim 1 , wherein the voltage applied on said magnesium material is 10V˜50V. 
     
     
         4 . The method defined in  claim 1 , wherein the weight proportion of said sodium dihydrogen phosphate and said sodium hydroxide is 1:1. 
     
     
         5 . A composite article of magnesium material and resin component comprising:
 said composite article made by the following steps:   immersing a magnesium material into an electrolyte solution formed by dissolving sodium dihydrogen phosphate and sodium hydroxide in pure water;   applying a voltage upon said magnesium material immersed with said electrolyte solution, so as to form an anodic oxide film on the surface of said magnesium material; and   filling part of the resin component into the multiple pores on said anodic oxide film so as to join said magnesium material with said resin component.   
     
     
         6 . The composite article of  claim 5 , wherein the weight mixture ratio R1 of said sodium dihydrogen phosphate and said sodium hydroxide is 1:2≦R1<2:1. 
     
     
         7 . The composite article of  claim 5 , wherein the voltage applied on said magnesium material is 10V˜50V. 
     
     
         8 . The composite article of  claim 5 , wherein the weight proportion of said sodium dihydrogen phosphate and said sodium hydroxide is 1:1.