The coatings are categorized into plasma-sprayed ceramic wear-resistant coatings and supersonic flame-sprayed carbide ceramic coatings.

Plasma spraying primarily utilizes ceramic materials such as alumina-titanium/chromium oxide series oxides. These materials boast exceptional properties like high hardness, excellent corrosion and heat resistance, and low friction coefficients. The coatings produced through this process exhibit superior and stable wear and friction reduction capabilities. The coating structure is dense, and the surface can be polished to a mirror finish (Ra 0.03～0.10 μm). For instance, applying a ceramic coating of 0.3～0.5 mm thickness to the surface of a high-pressure pump plunger can extend its service life by a factor of 6 compared to conventional hard-chromium plated plungers, making it the most widely used ceramic coating.

Supersonic flame-sprayed metal-ceramic coatings consist of a composite of nickel-chromium, cobalt as the metallic phase, and tungsten carbide, chromium carbide, and other hard ceramic materials. They offer high hardness, excellent toughness, and shock resistance, with a bonding strength ranging from 50 to 80 MPa.

Application Direction:

Piston pumps, plunger pumps, agricultural sprayer plungers, various water seals and oil seals, and all types of shaft sealing sections.

Coating Material:

1. AT13 (Al2O3/TiO2 87/13): High hardness, excellent overall wear resistance.

2. Cr2O3: High hardness, low friction coefficient, excellent corrosion resistance, and resistance to abrasive wear.

3. Co-WC: High-temperature red hardness, abrasion resistance, and erosion resistance.

4. Ni-WC: High hardness, resistant to high-temperature oxidation.