This paper assesses the performance of a supersonic flame spraying gun along with the quality of molybdenum coatings produced with it. The hardness of the wire sprayed molybdenum was compared to coatings made using conventional flame spraying methods. The coatings were also evaluated for porosity, bond strength, and phase distribution by X-ray diffraction. The results indicate that the supersonic gun performs better than conventional flame spray equipment when depositing refractory metals such as molybdenum.

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