What is a nickel based wear-resistant alloy?

 　　Nickel based alloys refer to a type of alloy that exhibits high strength and certain oxidation and corrosion resistance at high temperatures ranging from 650 to 1000 ℃. According to their main properties, they are further divided into nickel based heat resistant alloys, nickel based corrosion resistant alloys, nickel based wear resistant alloys, nickel based precision alloys, and nickel based shape memory alloys. High temperature alloys are divided into iron based high temperature alloys, nickel based high temperature alloys, and cobalt based high temperature alloys according to their different substrates. Nickel based high-temperature alloys are abbreviated as nickel based alloys.

　　What are its main components?

　　The main alloying elements of nickel based wear-resistant alloys are chromium, molybdenum, tungsten, and also contain a small amount of niobium, tantalum, and indium. Due to these components, they have wear resistance, as well as good oxidation resistance, corrosion resistance, and welding performance. It can be used to manufacture wear-resistant components or as a coating material, which can be coated on the surface of other substrate materials through surfacing and spraying processes. Nickel based composite powders include self fluxing alloy powders and non self fluxing alloy powders.

　　Non self fluxing nickel based powder refers to nickel based alloy powder that does not contain B, Si or has a low content of B or Si. This type of powder is widely used in plasma arc spraying coatings, flame spraying coatings, and plasma surface strengthening. Mainly including: Ni Cr alloy powder, Ni Cr Mo alloy powder, Ni Cr Fe alloy powder, Ni Cu alloy powder, Ni P and Ni Cr P alloy powder, Ni Cr Mo Fe alloy powder, Ni Cr Mo Si high wear resistant alloy powder, Ni Cr Fe Al alloy powder, Ni Cr Fe Al B-Si alloy powder, Ni Cr Si alloy powder, Ni Cr W based wear resistant and corrosion resistant alloy powder, etc.

　　Adding an appropriate amount of B and Si to nickel alloy powder forms nickel based self fluxing alloy powder. The so-called self fluxing alloy powder, also known as low eutectic alloy, is a series of powder materials formed by adding alloy elements (mainly boron and silicon) that can form low melting point eutectic in nickel, cobalt, and iron based alloys. Commonly used nickel based self fluxing alloy powders include Ni B Si alloy powder, Ni Cr B-Si alloy powder, Ni Cr B-Si Mo, Ni Cr B-Si Mo Cu, high molybdenum nickel based self fluxing alloy powder, high chromium molybdenum nickel based self fluxing alloy powder, Ni Cr W-C based self fluxing alloy powder, high copper self fluxing alloy powder, tungsten carbide dispersed nickel based self fluxing alloy powder, etc.

　　What are the roles of various elements in alloys?

　　The effect of boron and silicon elements: significantly reduce the melting point of the alloy, expand the solid-liquid temperature range, and form low melting eutectic; Deoxidization reduction and slagging function; The hardening and strengthening effect on the coating; Improve operational process performance.



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