Degussa Aktiengesellschaft

Wolfgang Boehm

Wolfgang Weise

Willi Malikowski

Andreas Szulczyk

Ulrich Muerrle

Willi Malikowsik

Juergen Hausselt

Soft-solder alloys for connecting ceramic parts without permetallization comprising 86 to 99% lead or tin, 0 to 13% silver and/or copper, 0 to 10% indium and 1 to 10% titanium and/or zirconium.

Soft-solder alloy for bonding ceramic articles

To coat metallic or ceramic surfaces with hard substances by means of brazing, a powder mixture of 60 to 90% silver, 2 to 35% copper, 2 to 30% tin and/or indium and 2 to 20% titanium, zirconium, hafnium, chromium, vanadium, tantalum, niobium, titanium hydride, zirconium hydride and/or hafnium hydride together with an organic binder and then the hard-substance powder are deposited on the surface and heated to 900.degree. to 1200.degree. C. The particle sizes of the metallic powders must be less than the particle size of the hard-substance powder.

Method for coating surfaces with hard substances

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Alzenau-Albstadt, Germany

Wolfgang Boehm