Nickel-aluminide based wear resistant material for piston rings

   
   

A piston ring comprises a coating of a wear-resistant composite composition, particularly intended for high temperature applications. The wear-resistant composite composition comprises a ceramic compound and at least 50 volume %, based on the total volume of the wear-resistant composition, of an intermetallic nickel-aluminide chosen from the group consisting of NiAl and Ni.sub.3 Al. A piston ring comprises a wear-resistant composite composition, particularly intended for high temperature applications. The wear-resistant composite composition comprises a ceramic compound and at least an intermetallic nickel-aluminide chosen from the group consisting of NiAl and Ni.sub.3 Al.

Un anillo de pistón abarca una capa de una composición compuesta wear-resistant, prevista particularmente para los usos de alta temperatura. La composición compuesta wear-resistant abarca un compuesto de cerámica y por lo menos 50 volúmenes %, basados en el volumen total de la composición wear-resistant, de un ni'quel-aluminide intermetálico elegido del grupo que consiste en NiAl y el al Ni.sub.3. Un anillo de pistón abarca una composición compuesta wear-resistant, prevista particularmente para los usos de alta temperatura. La composición compuesta wear-resistant abarca un compuesto de cerámica y por lo menos un ni'quel-aluminide intermetálico elegidos del grupo que consiste en NiAl y el al Ni.sub.3.

 
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