JOINING METHOD FOR METAL MEMBERS
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United States of America Patent
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app pub date -
Apr 16, 2010
filing date -
Apr 17, 2009
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Abstract
The present invention provides a joining method for metal members, including: preparing an Fe-based metal member of Fe-based material, and an Al-based metal member of Al-based material; providing a Zn-based brazing filler metal between the Fe-based metal member and the Al-based metal member; and joining the Fe-based metal member and the Al-based metal member, wherein the Zn-based brazing filler metal includes: 2.0 mass % or less of Al; and the balance of Zn and inevitable impurities, and in the joining, the Zn-based brazing filler metal is heated such that a liquid phase of the Zn-based brazing filler metal is generated, and in solidification of the Zn-based brazing filler metal in a condition of the liquid phase, Zn primary crystal or eutectic of Zn and Al is crystallized.
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