Coating consisting of diamond particles contained within hard electroless nickel metal for coating metals or alloys for use on mechanical shaft seals for automotive water pumps and chemical process pumps, textile machinery parts, gears, molds and tools for processing glass, plastics, rubber, or ceramic-filled resins, metal, plastic, ceramic, and wood-working tools such as taps, dies, drills, routers, rasps, and files, end mills for graphite, high speed paper-handling equipment such as lifters, sorters, drills, and guides, silicone wafer cutting tools, cardboard corrugating rolls, pulp processing equipment such as baskets, meshes, and filters, computer parts such as magnetic tape reading heads and guides and heat sinks, ultrasonic transducer wear-plates, ultrasonic sealing equipment, gage blocks, canning equipment, smokeless powder extruder dies and cutters, industrial scissors and barber scissors, extruder kneading blocks, screws, barrels for processing glass-filled resins, surgical and dental tools, agricultural processing equipment, molds for automotive plastic components, petrochemical exploration, drilling and transferring equipment, cooling fins, pump parts such as rotors, shafts, housings, impellers, covers, frictional devices such as brake rotors, pads, bands, discs, and files, and golf clubs