Patent ID: 8042726
Filing Date: 2011-10-25
Classification: B23K,B81C,F28D,F28F,Y10T

Abstract:
1. Method for bonding at least two work pieces made of stainless steel, nickel or nickel alloys, the said method comprising the following method steps: a) providing said at least two work pieces; b) forming a respective metal bonding layer on at least one side of at least one of said at least two work pieces by means of a chemical or electrolytic metal plating method, wherein the metal bonding layer consists of a nickel/phosphorous alloy having a phosphorous content within a range of from about 1 to about 14 percent by weight and has a thickness within a range of from about 0.5 to about 10 μm; c) forming a bonding arrangement comprising said at least two work pieces in such a manner that there is at least one metal bonding layer between said at least two respective work pieces; d) heating the bonding arrangement at a heating rate of from about 5 to about 30 K/min to a bonding temperature in excess of the melting temperature of the metal bonding layer; e) bonding said at least two work pieces at the bonding temperature by applying contact pressure of at least about 10 kPa; f) cooling the bonding arrangement at a cooling rate within a range of from about 10 to about 100 K/min.