- This is the first work in Vietnam researching the technology of creating SiC/Cu plasma coating on steel surface. A SiC-50Cu plasma coating was successfully produced on steel surface with thickness > 200 µm; porosity 1.4%; adhesive strength 39 MPa; coating hardness approximately 295 HV; SiC content >53%.

- The study determined the particle size and SiC/Cu mixing ratio to ensure the coating formation process meets the requirements for subsequent research. Analyzed the plasma coating process, improved the spray gun in Ar shielding gas. Used Taguchi method combined with ANOVA analysis to optimize technological parameters affecting output quality indicators. Established a set of technological parameters (Current I, Spray distance L, Powder feed rate M) suitable for creating SiC-50Cu plasma coating on C45 steel surface: I=416A, L=45mm, and M=32 g/min.

- Designed and manufactured composite wear testing equipment compatible with practical conditions, established an experimental procedure, and evaluated the wear resistance of the coating.

- The research results of the thesis contribute to creating an anti-wear protection solution for equipment and structures working in chemical corrosion environments, specifically by creating protective coatings on fan blades and pump impellers operating in fluorine-containing acid environments.

- Contributes to advancing expertise and supplementing technical documentation for spray coating technology.