High Quality Of HR.Cr3C2-20NiCr Based Alloy Powders

High quality of HR.Cr3C2-20NiCr Based Alloy Powders Chemical Element: NiCr-Cr3C2 powder consists of two components with different properties. Among them, NiCr alloy has good heat and corrosion resistance, and commonly used components are 75%Ni-25%Cr and 80%Ni-20%Cr. The Cr-C system has three...
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High quality of HR.Cr3C2-20NiCr Based Alloy Powders 

Chemical Element:

C

Co

Ni

Cr

Fe

8.0-10.5

/

14.5-17.0

/

≤0.3

NiCr-Cr3C2 powder consists of two components with different properties. Among them, NiCr alloy has good heat and corrosion resistance, and commonly used components are 75%Ni-25%Cr and 80%Ni-20%Cr. The Cr-C system has three compounds Cr3C2, Cr7C3 and Cr23C6, and the melting temperatures are 1810 degree C, 1726 degree C and 1575 degree C respectively. Of these, Cr3C2 is the most common and most important one. The characteristics of these chromium carbide are that they have the strongest antioxidant capacity in metal carbides, and only 1100-1400 degrees in air before they start to oxidize significantly. High hardness remains at high temperature. Cr3C2 also has very strong corrosion resistance and wear resistance, in dilute sulfuric acid solution is 30 times the corrosion resistance of 1Crl8Ni9Ti stainless steel, and in the steam is 50 times the WC-Co alloy. Spraying the power plant boiler tube with NiCr-Cr3C2, the wear rate of the tube wall is reduced from 1.5-2.0mm / year to 0.03mm / year, and its working life is extended to more than seven years. Using HVOF or plasma spraying process, the coating has the functions of abrasion resistance, erosion resistance, cavitation and microvibration under high temperature conditions, and it is also resistant to high temperature gas (even S gas) corrosion and high temperature oxidation.

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