PURPOSE: To produce a W-wire reinforced composite material exhibiting excellent mechanical properties at a high temp. by forming a coating consisting of Cr or Al onto the surface of W wires, then compounding and uniting the same with a matrix material consisting of a superalloy.
CONSTITUTION: The coating consisting of at least either of Cr or Al is formed on the surface of the W wires having 0.05W0.5mm diameter. The adequate thickness of the above-mentioned coating is 1W50μm, and the coating is formable by an electroplating method, vapor deposition, etc. The coated W wires are compounded and united with the matrix material. An FeCrAlY alloy is adequate as the above-mentioned matrix material. The composition with the above- mentioned W alloys is preferably executed by depositing the matrix material on the W wires by thermal spraying, vapor depositing, plating, etc. The inter- diffusion of the W wires and the alloy is thereby obviated even after long-period use at a high temp. of about ≥1,200°C and the W-wire reinforced composite material with which the mechanical strength of the W wires lasts long is obtd.
ITO MASAYUKI
TAKAHASHI YOSHIKAZU
TAKEDA HIROMITSU
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