Erosion Resistance Evaluation of Potential Gun Barrel Coatings
Final rept. Jan 1980-Jan 1981
ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPONSYSTEMS LAB
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The erosion resistance of tungstencarbon and tantalumtungsten deposited on AISI 4340 steel and molybdenum substrate were investigated. Erosion data acquired with the ARRADCOM test device indicated poor adhesion between each refractory metal coating and 4340 steel. Mechanical failure of the molybdenum substrate complicated the erosion data, but it was concluded that the tungsten carbon coating performed better than steel at higher pressures. No apparent advantage was observed with the tantalumtungsten coating at any pressure. Microscopic examination of the coatings showed extensive gas erosion of the surface of the tantalumtungsten coating, but very little erosion in the tungstencarbon surface.
- Coatings, Colorants and Finishes