Joined bodies, assemblies for high pressure discharge lamps and high pressure discharge lamps
AssigneeNGK Insulators, Ltd.
InventorNorikazu Niimi
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Abstract
The present invention provides a joined body having a first member, a second member and a joining material interposed between the first and second members. The joining material has a porous bone structure with open pores and made of a sintered product of metal powder and impregnated phase impregnated into the open pores. The impregnated phase has polycrystalline substance made from a metal oxide and at least one of a nitride and an oxynitride. The joined body has improved resistance against fatigue and fracture, even when the body is subjected to repeated thermal cycles between high and room temperatures.
Claims38
A joined body comprising a first member, a second member and a joining material interposed between said first and second members, said joining material comprising a porous bone structure with open pores formed therein and made of a sintered product of metal powder and impregnated phase impregnated into said open pores of said structure, said impregnated phase comprising polycrystalline substance made from a metal oxide and at least one of a nitride and an oxynitride.
The joined body of 12, wherein said polycrystalline substance in said intermediate layer is an eutectic crystal.
A joined body comprising a first member, a second member and a joining material interposed between said first and second members, said joining material comprising a porous bone structure with open pores formed therein and made of a sintered product of metal powder and impregnated phase impregnated into said open pores of said structure, said impregnated phase comprising polycrystalline substance comprising a complex oxide of a rare earth element and aluminum.
Dependencies are inferred from the claim text.