Patent ID: 6037066
Filing Date: 2000-03-14
Classification: B22F,C04B,F28D,F28F,Y10T

Abstract:
A functionally gradient material composed of a metal part composition and a ceramic part composition and constructed in an integrated manner by means of a sintering treatment, wherein:said metal part composition comprises 75% to 90% of tungsten and 5% to 20% of copper;said metal part composition further comprises at least one selected from the group consisting of 0.3% to 1.5% of aluminum, 0.05% to 0.5% of silver, and 0.1% to 3% of at least one of iron, nickel, and cobalt;said ceramic part composition comprises 60% to 90% of aluminum nitride and 10% to 40% of aluminum; andsaid ceramic part composition further comprises at least one selected from the group consisting of 0.1% to 3% of alumina, 0.1% to 5% of tungsten carbide, 0.1% to 3% of calcium oxide, 0.3% to 5% of yttrium oxide, 0.2% to 3% of zirconium, 0.1% to 1% of chromium, 0.3% to 2% of tungsten, 0.05% to 0.5% of silver, and 0.1% to 1% of copper.