Electrode position of Erosion and Oxidation Resistant Coatings for Graphite

摘要

Research was conducted to optimize electrodeposited metal-ceramic composite coatings for protection of graphite rocket nozzles against oxidation and erosion. A series of nozzles were coated with different thicknesses of the cermet and fired in the company's gaseous hydrogen-gaseous oxygen rocket motor. The data from these firings indicated that 2.0 to 2.5 is the optimum coating thickness. The effect of the concentration of ceramic particles in the plating bath on the amount of ceramic occluded in the coating was investigated. Results of this study showed that there was no effect on the amount of particles in the coating.