1. Hard material powders and hard alloy powders for plasma surface coating
2. Metal and carbide powders for thermal spraying
3. Metco (1973). “Evaluation Methods and Equipment for Flame Spray Coatings”, Research Laboratory Report #106.
4. Rangaswamy, S. (1986). “Metallurgical Characterization of Plasma Sprayed WC-Co Coatings” Ph.D Thesis, Materials Science Dept., State University of New York at Stony Brook, N.Y., USA.