Suoyi Chromia Composite Thermal Spray Powder

Chromia Composite Thermal Spray Powder

A ceramic thermal spray powder based on Cr₂O₃ (chromium(III) oxide), modified with additives such as TiO₂, SiO₂, and Al₂O₃. The primary application method is Atmospheric Plasma Spraying (APS), with some variants also suitable for flame spraying. ✅ Mainstream Formulation Systems
Cr₂O₃-TiO₂ (Chromium-Titanium composite powder; most widely used)
Typical compositions: 93% Cr₂O₃ + 4% SiO₂ + 3% TiO₂; 75% Cr₂O₃ + 25% Al₂O₃; Cr₂O₃ + 40% TiO₂
Functions: TiO₂ enhances coating toughness, reduces brittleness, and increases deposition efficiency; SiO₂ further improves impact resistance.
Cr₂O₃-Al₂O₃ (Chromium-Aluminum composite)
Combines wear resistance with corrosion resistance; electrical resistivity can be controlled.
Cr₂O₃-SiO₂-TiO₂ ternary composite
Offers high toughness and resistance to mechanical impact; the preferred choice for sealing rollers.
Special modification: Cr₂O₃/Graphene composite powder
Provides self-lubrication and a lower coefficient of friction; specifically designed for dynamic sealing rings.
✅ Powder Manufacturing Processes
Fused & Crushed: Angular particles with high density.
Spray Granulated (Agglomerated): Spherical particles with excellent flowability and stable powder feeding; the mainstream choice for export.
Sintered & Crushed
✅ Key Coating Properties
High microhardness: HV 1000–1400
Excellent resistance to abrasive wear, erosion, and cavitation
Resistant to acid/alkali chemical corrosion; low coefficient of friction
Maximum operating temperature: ≤540°C
Dense coating structure; suitable for laser engraving (e.g., Anilox rollers)
✅ Typical Applications
Printing: Ceramic Anilox rollers
Papermaking: Press rolls, conveyor rolls
Pumps & Valves: Shaft sleeves, sealing rings, wear-resistant rings
Textiles: Thread-guiding wheels, yarn guides
Chemical Industry: Slurry-handling equipment, components subject to corrosive wear
✅ Common Particle Size Specifications (Standard for export)
15–63 μm; 25–95 μm; 16–90 μm; 40–120 μm (for Graphene-composite variants) Chromium oxide composite thermal spray powder—produced via spherical agglomeration or fusion-crushing—exhibits excellent flowability and is suitable for atmospheric plasma spraying (APS). The resulting coatings offer high hardness, wear resistance, chemical corrosion resistance, and a low coefficient of friction; they are also compatible with laser engraving. Typical applications include anilox rolls, pump seals, papermaking rollers, and textile guide rollers. Particle size can be customized. Packaging: 25 kg/drum.