Ni60 high hardness nickel-chromium boron-silicon alloy powder. From melting, wetting and spray of the fine, and relatively low melting point, spray layer has a high hardness, corrosion resistance, wear resistance, heat characteristics, difficult to cut, to wet grinding is appropriate. Category: (1) nickel - chromium alloy thermal spray powder: the kind of the kind of thermal spray powders more, such as nickel - chromium heat-resistant alloys, it is added to the nickel, 20% chromium steel. Ni - Cr heat resistant alloy is hardly oxidized at high temperatures, is a typical heat-resistant, corrosion resistance and high temperature oxidation of the coating material. Dense coatings with good adhesion properties of the metal substrate, the coating and the substrate is an excellent transition layer of ceramic material, soft metals and other materials, both to increase the capacity of the matrix and high temperature gas erosion, but also improve the coating and bond strength of the base material. (2) nickel - chromium - iron alloy thermal spray powder: Such thermal spray powder is a nickel - add the appropriate iron-chromium, and its high-temperature oxidation resistance than the nickel - chromium alloy lose some other properties essentially nickel - chromium alloy close to prominent is the price a little cheaper, and therefore can be used as corrosion repair work piece, but also do the transition layer thermal spray powder. (3) a nickel - chromium - boron alloy thermal spray powder: this alloy because it contains boron, chromium and carbon and other elements, relatively high hardness, toughness, moderate, by spraying, its coating wear and corrosion resistance, heat good, can be used for shafts, pistons and other corrosion repair. For oxygen - acetylene flame or plasma spray process cobalt-based alloys, is a capability for various types of carbide wear and corrosion and high-temperature oxidation?. Known as cobalt-chromium-tungsten (molybdenum) alloy or Stellite (Stellite) alloy (Stellite Elwood Hayness invented by the Americans in 1907). Cobalt-based alloy is cobalt as a main component, contains a considerable amount of nickel, chromium, tungsten, and a small amount of molybdenum, niobium, tantalum, titanium, lanthanum and other alloying elements, and occasionally further containing an alloy of iron. Depending on the alloy composition, they can be made of wire, powder for hardfacing welding, thermal spraying, spray and other technology can also be made castings and forgings and powder metallurgy.