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Ceramic coated metal material and production method thereof

A technology of metal materials and manufacturing methods, applied in the direction of electrolytic coating, anodic oxidation, surface reaction electrolytic coating, etc., can solve the problems of limitation and no consideration, achieve stable formation, improve uniformity, improve uniformity and quality stability Effect

Inactive Publication Date: 2009-12-16
丸八殖产株式会社 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] From these points of view, Al-based metals, Mg-based metals, or Ti-based metals that convert the surface layer into ceramics by plasma electrolytic oxidation are considered to be materials with sufficient characteristics. However, existing ceramic-coated metal materials method, the substrate is limited to Al-based metals, and the formation of a plasma electrolytic oxide film (ceramic film) is not considered at all for other metal substrates such as Mg-based metals and Ti-based metals.

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  • Ceramic coated metal material and production method thereof
  • Ceramic coated metal material and production method thereof
  • Ceramic coated metal material and production method thereof

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Embodiment Construction

[0042] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings, but before that, an apparatus configuration for carrying out the method for manufacturing a ceramic-coated metal material of the present invention will be described.

[0043] Such as figure 1 As shown, an electrolytic solution 2 obtained by stirring and mixing at least an alkali metal hydroxide, an alkali metal silicate, and an alkali metal polyphosphate is stored in a bathtub-shaped electrolytic tank 1 . Examples of the alkali metal hydroxide used in the electrolytic solution 2 include NaOH and the like in addition to KOH which is particularly suitably used. In addition, water glass (Na 2 SiO 2 ). On the other hand, as the alkali metal polyphosphate, for example, Na 4 P 2 o 7 、Na 2 PO 4 、Na 6 P 6 o 18 One or both of these.

[0044] Such an electrolytic solution 2 is prepared by dissolving the above-mentioned components in distilled or deionized wa...

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Abstract

A plasma electrolytic oxidation film (ceramic film) which is very smooth and highly resistant to not only an Al-based metal substrate but Mg-based metal and Ti-based metal substrates can be formed. An energization pattern is used in which, as a pulse mode, a alternating pulse mode in which one anode type pulse mode or one cathode type pulse mode appears before or after at least one anode type pulse mode to be positively polarized or at least one cathode type pulse mode to be negatively polarized is arranged, and a deformed sine wave shape in which the peak position of its pulse mode current wave shape is deviated from the center position of the pulse is used.

Description

technical field [0001] The present invention relates to a ceramic-coated metal material in which a crystalline plasma electrolytic oxide film is formed on the surface layer of a metal base material containing an Al-based metal, a Mg-based metal, or a Ti-based metal, and a method for producing the same. Background technique [0002] In recent years, as a surface treatment technology for substrates such as Al parts, a suitable pulse-mode current is passed between the substrate and the cathode to cause plasma discharge to occur at the contact interface between the substrate and the electrolyte, and the substrate The plasma electrolytic oxidation method, which converts the surface layer of the material into a plasma electrolytic oxide film, has attracted much attention. [0003] According to such a plasma electrolytic oxidation method, for example, a plasma electrolytic oxidation film (ceramic film) excellent in corrosion resistance, wear resistance, etc. can be formed on a subs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04C25D11/06C25D11/26C25D11/30
CPCC25D11/024C25D11/026C25D11/02C25D11/30C25D11/04C25D11/26C25D21/02
Inventor 望月慎介
Owner 丸八殖产株式会社
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