Method of making enhanced surface coating for light metal workpiece

A light metal and coating technology, applied in surface reaction electrolytic coating, metal material coating process, device for coating liquid on the surface, etc., can solve problems such as low chipping resistance

Inactive Publication Date: 2017-05-10
GM GLOBAL TECH OPERATIONS LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemically passivated workpieces with an oxide layer have been used, but have low chipping resistance

Method used

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  • Method of making enhanced surface coating for light metal workpiece
  • Method of making enhanced surface coating for light metal workpiece
  • Method of making enhanced surface coating for light metal workpiece

Examples

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Embodiment Construction

[0015] The following description is merely exemplary in nature and is not intended to limit the present disclosure, its application or use. The phrase “at least one of A, B, and C” used herein should be understood as using a non-exclusive logical “or” to represent logic (A or B or C). It should be understood that the steps in the method can be executed in a different order without changing the principle of the present disclosure. The range disclosure includes the disclosure of all ranges and sub-ranges in the entire range.

[0016] The headings (such as "Background" and "Summary of the Invention") and subheadings used herein are intended to be used only for the general organization of the subject matter in the present disclosure, and are not intended to limit the disclosure of the present invention or any aspect thereof. The description of multiple embodiments with stated features is not intended to exclude other embodiments with additional features, or other embodiments includi...

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Abstract

A light metal workpiece with enhanced surface protection. The workpiece comprises a metal or alloy matrix having an exposed surface. A corrosion resistant oxide layer is formed in at least a portion of the exposed surface using a micro-arc oxidation technique. A first coating is applied onto at least a portion of the oxide layer using an electro-coating technique and is configured to seal the oxide layer. A second coating is applied onto at least a portion of the first coating, the second coating comprising a powder coating material. An appearance coating may optionally be applied onto at least a portion of the second coating, wherein the appearance coating includes at least one of a base coat, a color coat, and a clear coat.

Description

Technical field [0001] The present disclosure relates to coatings and methods that implement surface treatments to increase the corrosion resistance of metals and alloys that are sensitive to corrosion. Background technique [0002] The background technical description provided in this article is for the purpose of general description of the content of the present disclosure. Certain work of the inventor (that is, the work described in this background art section) and the contents of the specification regarding certain prior art that have not yet become the filing date, are not considered explicitly or implicitly It is a prior art for the present disclosure. [0003] Alloy road wheels with high magnesium or aluminum content are not common in special vehicles and racing cars. However, the use of wheels in cheap passenger cars is limited to the production of a small number of sports cars. By way of example, when mated to steel or cast iron wheels and brake components, galvanic cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/04C23C4/00C23C14/00
CPCB05D1/06B05D7/16B05D7/57B05D2202/20B05D2202/25B05D2350/63B60B3/10B60B2310/60B60B2310/618B60B2310/654B60B2310/661B60B2360/106B60B2360/324B60B2900/141C25D11/026C25D11/20C25D11/26C25D11/30C25D13/22Y10T428/2495Y10T428/24967Y10T428/24997Y10T428/31515
Inventor Y.葛B.蒋M.刘
Owner GM GLOBAL TECH OPERATIONS LLC
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