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

- The study determined the particle size and mixing ratio of SiC/Cu to ensure the coating formation process meets subsequent research requirements. Analyzed the plasma coating process, improved the spray gun under 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 plasma SiC-50Cu coating on C45 steel surface: I=416A, L=45mm, and M=32 g/min.

- Designed and manufactured a mixed wear testing device compatible with actual conditions, established an experimental procedure, and evaluated the wear resistance of the coating.

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

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