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SX-801 ultrahard wearablespray wire
Application: SX-801 is a kind of tubular ultrahard nanometer-powder spray wire. It fully exerts the special effect of nanometer-powder so as to gain a superhard and ultrawear-resistent coating that reaches the targeted indexes.
Main ingredients
Chromium (Cr), nickel (Ni), boron (B) and Cr3C2 hard ceromics
Microstructure of SX-801 spray coating
The mixture of Cr3C2 and its resultant product during spraying acts as framework of the coating structure. NiCrB which have good ductility and corrosion resistance acts as the carrier of the hard particle mixture. The hard particle mixture evenly inlays into the NiCrB carrier to form a good coating.
SX-800 wearable performance
The hard particle mixture of Cr3C2 and its resultant product during spraying has good wearing resistant ability as the carbide of Cr has high hardness.
SX-801 ductility performance
The carbide of Cr has high hardness but its coefficient of thermal expansion differs greatly with the substrate. So there’s a need that carrier should have good ductility, in other words, it should have similar coefficient of thermal expansion as to the substrate. The NiCrB carrier and the rendering transition guarantee good ductility so that coating won’t break while temperature changes.
SX-801 anti-corrosion performance
NiCr has good anti-corrosion to protect the hard particles from falling off the carrier and the coating from losing effectiveness while functioning in corrosive environment.
SX-801 basic parameters of coating
Bond strength ≥45Mpa
Thickness ≥0.6mm
Hardness ≥HRC52
Porosity ≤1%
Effective protecting period:1 year
Heat transfer coefficient:34-38w/m. k
linear expansion coefficient:12.5×10^-6/℃
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