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Magnesium alloy member and method for producing the same

A technology for magnesium alloys and components, applied in the coating process of metal materials, anodic oxidation, etc., can solve the problems of poor plastic processing performance, achieve the effects of improving processing performance, accelerating cooling rate, and reducing manufacturing costs

Inactive Publication Date: 2009-08-19
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since magnesium alloys have a hcp structure (hexagonal close-packed structure) that is poor in plastic workability, magnesium alloy products used as the above casings are mainly cast materials manufactured by die casting or thixo molding.

Method used

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  • Magnesium alloy member and method for producing the same
  • Magnesium alloy member and method for producing the same
  • Magnesium alloy member and method for producing the same

Examples

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Effect test

Embodiment 1

[0175] A pressed material of AZ91 subjected to the above-mentioned processing from twin-roll continuous casting to hot pressing was used as a treatment base material. This treated substrate is subjected to surface pretreatment and paint application treatments. In the surface pretreatment, a P-based treatment liquid manufactured by Company A containing 10% of phosphate as a main component and a 10% KOH solution were used as the surface pretreatment treatment liquid. They were chemically treated at 40° C. for 2 minutes while ultrasonically agitating them. In Example 1 and Examples 2 to 7 described later, the undercoat treatment and the topcoat treatment were each performed once, but the caulking and polishing were not performed.

Embodiment 2

[0177] The same pressed material as in Example 1 was used as the treatment substrate. This treated substrate is subjected to surface pretreatment and paint application treatments. In the surface pretreatment, a P-based treatment liquid manufactured by Company B containing 10% phosphate as a main component and a 1% KOH solution were used as the surface pretreatment treatment liquid. They were chemically treated at 90° C. for 1 minute while ultrasonically agitating them.

Embodiment 3

[0179] The same pressed material as in Example 1 was used as the treatment substrate. This treated substrate is subjected to surface pretreatment and paint application treatments. In the surface pretreatment, a P-Mn-based treatment liquid containing 10% of manganese phosphate as a main component and manufactured by C Company was used as a treatment liquid for surface pretreatment. It was chemically treated at 40° C. for 2 minutes while ultrasonically agitating it.

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Abstract

There is provided a magnesium alloy member having mechanical properties and corrosion resistance and a method of manufacturing the magnesium alloy member. A magnesium alloy member has a base material made of a magnesium alloy, and an anticorrosive film formed on the base material. The base material is a rolled magnesium alloy including 5 to 11% by mass of Al. By using a base material including a large amount of Al, a magnesium alloy member having excellent mechanical properties and high corrosion resistance can be produced. In addition, by using a rolled material, the number of surface defects at the time of casting is small, and the frequency of compensation processes such as undercoating and puttying can be reduced.

Description

technical field [0001] The present invention relates to a magnesium alloy member and a method of manufacturing the same, and more particularly, the present invention relates to a magnesium alloy member in which surface treatment such as anti-corrosion film formation or paint application is performed on the surface of a magnesium alloy plate. Background technique [0002] Magnesium is known to be the lightest metal among metallic materials used for structures, with a specific gravity of 1.74 (density: g / cm 3 , 20°C). Magnesium is able to have higher strength by adding various elements and alloying them. Therefore, recent magnesium alloys can be used as casings of small portable machines such as cellular phones or mobile machines, casings of notebook computers, or automobile parts, and the like. In particular, magnesium alloys containing a large amount of aluminum (for example, ASTM American Standard for Testing and Materials: AZ91) have high corrosion resistance or strength...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22F1/06C23C22/07C25D11/30
Inventor 奥田伸之真岛正利酒井将一郎稻沢信二森信之井上龙一大石幸广河部望沼野正祯
Owner SUMITOMO ELECTRIC IND LTD
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