FeCrC, FeW, and NiAl Modified Iron-Based Alloy Coating Deposited by Plasma Transferred Arc Process

Abstract

The technique of alloying X120Mn12 steel substrate by plasma transferred arc process was used for development of a surface having high wear resistance. High carbon ferrochromium, ferrotungsten, and nickel-aluminum intermetallic powders were combined to form M 7 C 3 carbides inside Fe-based composite surface coating. The phase transformations on these coated surfaces were comprehensively examined by using a combination of scanning electron microscopy (SEM) with energy dispersive spectrometry microanalysis, differential thermal analysis and X-ray diffraction (XRD). The microstructure studies of the superficial layers of the coating revealed a phase mixture of interdendritic austenite ( ) phase structure and fine eutectic M 7 C 3 carbides. The new formed coated surfaces were investigated by change of alloying elements (Cr, W, Ni), size of dendrites, change of eutectic reaction temperatures, hardness, carbide volume ratio of hard phases, and coating thickness as the processing parameters (powder feed rate and heat input). The dry sliding wear tests were performed on a pin on disc machine. The wear rates of the tests were affected by the powder feed rate, powder type, and applied load. Results revealed that processing powder combination used in this study (FeCrC-FeW-NiAl) provided the best option with superior combination of properties on surface of X120Mn12 steel substrate.

Determination of abrasion resistance of Fe28Cr5C1Mn coating applied to 30MnB5 boron alloy cultivator blades via electric arc spray

“…It provides superior hardness and abrasion strength to the material because of its high carbide production features. Some researchers have worked with Fe-based arc spray coating wire, including Fe-Cr alloy, 30 FeCrCMn, 31 Fe-Cr-Al-B, 32 Fe-C-Cr alloy, 33,34 FeBSiNb, 35 FeCrBSiMnNbY and FeBSiNbCr, 36 and FeCrB(CSi) and Fe-Cr-Al. 37 Basic advantages including subdued cost, elevated spray rate, high deposit capacity, ease of application, and elasticity are the main reasons for the widespread use of the EAS technique.…”

Determination of wear resistance of nickel-carbide alloy coating by atmospheric plasma spray technique on 30MnB5 alloy steel used in cultivator blades

“…Additionally, the formation of cracks can be observed in high-temperature spraying processes [44]. Such undesirable cases may be due to insufficient plasma strength or extremely rapid cooling effect [12,[45][46][47]. The quantitative analysis of areas 1, 2, 3, and 4 in figure 6 (in weight percent) is given in the EDS results in table 5.…”

Effect of Cr3C2 content on microstructure and properties of 310 stainless steel coating by PTA welding

“…However, under some harsh working conditions, the simple alloy surfacing layer can no longer meet the working requirements. The PTA surfacing metal-based ceramic composite coating combines the high toughness of metal with the high melting point, high hardness and high wear resistance of ceramic materials, which can effectively improve the service life of parts [5][6][7][8][9]. Some researchers have studied the properties of WC-containing Fe-based alloy layer [10][11][12][13].…”