What are the thermal spraying anti-friction self-lubricating composite powders

       The anti-friction self-lubricating composite powder is a particle core composite material with low friction coefficient, low hardness and self-lubricating properties, which is coated with pure metal materials (Ni, Co, Ag, Cu, Cr, Mo, W, Ta, etc.), such as Graphite, MoS2, WSe2, CaF2, PTFE and other solid lubricants. In the process of sliding friction, the coating metal provides sufficient bonding strength and necessary mechanical properties, while the solid lubricant forms a conversion film with low friction coefficient on the sliding surface, so it has good anti-friction lubrication effect. It is usually used to prepare mechanical friction pair coatings under the conditions of oil-free lubrication, dry friction and boundary lubrication. Such powder materials include: nickel (or copper)-coated graphite (Ni/C) composite powder, nickel-coated molybdenum disulfide (Ni/MoS2) composite powder, nickel-coated polytetrafluoroethylene (Ni/PTIFE) composite powder, nickel-coated Diatomite (Ni/DE) composite powder.



Nickel (or copper) clad graphite (Ni/C) composite powder is prepared by powder flame spraying and plasma spraying to prepare self-lubricating coatings for oil-free air compressors; self-lubricating coatings for organic solvent transfer pumps, and those used below 480°C Abradable sealing coatings, self-lubricating coatings, etc.



Nickel-clad molybdenum disulfide (Ni/MoS2) composite powder is prepared by powder flame spraying and plasma spraying for high temperature, low temperature, high load, high speed boundary lubrication or oil-free lubrication, chemical corrosion and self-lubricating coatings under ultra-vacuum conditions, aerospace Engines and compressors can wear seal coatings, etc.



The nickel-coated polytetrafluoroethylene (Ni/PTFE) composite powder is prepared by plasma spraying to prepare the anti-friction self-lubricating coating, which is applied to the anti-erosion self-lubricating coating for the equipment conveying liquid corrosive chemical or organic solvent medium.



Nickel-coated diatomite (Ni/D.E) composite powder coating, using powder flame spraying and plasma spraying to prepare abradable sealing coatings at temperatures of 750~900℃.