Oxidation resistant filler metals for direct brazing of structural ceramics

Abstract

A method of joining ceramics and metals to themselves and to one another isescribed using essentially pure trinickel aluminide and trinickel aluminide containing small amounts of carbon. This method produces strong joints that can withstand high service temperatures and oxidizing environments.

I claim: 
     
       1. A composite body comprising at least two structural components of ceramics and metals joined to themselves or to one another with a trinickel aluminide brazing filler metal disposed thereinbetween consisting essentially of 23 to 25 atomic percent aluminum and the balance nickel. 
     
     
       2. The composite body of claim 1 wherein said brazing filler metal consists essentially of 23 to 25 atomic percent aluminum, 0.05 to 0.20 atomic percent carbon and the balance nickel.