Metal infiltrated ceramic electrical conductor

Details Metal infiltrated ceramic electrical conductor Metal infiltrated ceramic electrical conductor

1996-09-16

1998-05-19

Thibodeau, Paul J.

Compositions: ceramic

Ceramic compositions

Refractory

C04B 3558

Patent

active

057535744

ABSTRACT:
A composition having an empirical formula MB.sub.2-z +N, wherein 0<z<0.10 and M is selected from the group consisting of Zr, Hf and Ti, wherein N is selected from a group consisting of Cu, Au and Ag and wherein the MB.sub.2-z defines a ceramic matrix structure defining a volume with void spaces comprising at least 10 percent of the volume of the matrix structure and the N occupies at least 70 percent, by volume, of the void spaces. A preferred method of making the composition is a two step process: First, ZrB.sub.2 powder (which preferably is slightly enriched in Zr is vacuum hot pressed at a hot pressing temperature of about 2150 degrees C. to create a ceramic matrix having a density of about 68 percent. Second, the ceramic matrix is heated in a pool of copper at a vacuum and at an infiltration temperature of about 1700 degrees C. to permit copper from the pool to infiltrate the ceramic matrix.

REFERENCES:
patent: 4891338 (1990-01-01), Gesing et al.
patent: 5011063 (1991-04-01), Claar
patent: 5110637 (1992-05-01), Ando et al.
patent: 5248639 (1993-09-01), Elsner et al.
patent: 5400947 (1995-03-01), Wang et al.

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