Microstructural and Wear Characteristics of High Velocity Oxygen Fuel (HVOF) Sprayed NiCrBSi–SiC Composite Coating on SAE 1030 Steel

Abstract

In this paper, wear properties of NiCrBSi-SiC coatings were investigated using the ball-on-disk wear test. In experimental study, NiCrBSi-SiC powders were sprayed using a high-velocity oxygen fuel technique on an SAE 1030 steel substrate. Powder mixtures with different weight mixing ratios, NiCrBSi + 10 wt% SiC, NiCrBSi + 20 wt% SiC and NiCrBSi + 40 wt% SiC coatings were prepared. The deposited coatings are compared in terms of their phase composition, microstructure and hardness. It is proved that the degree of mixing of the NiCrBSi and SiC components in the powder has a massive effect on the phase composition, microstructure and hardness of the coatings. Wear tests were conducted on both the uncoated and coated substrates at same normal load, speed, and wear distance. It has been determined that the coated substrates exhibit a very good tribological performance in comparison to the uncoated substrate. The increase in the adhesive wear resistance provided by the

Erosion wear behaviour of plasma sprayed NiCrSiB/Al2O3 composite coating

“…Various hard phases used as reinforcing additives are WC, Al 2 O 3 , Cr 3 C 2 , Cr 2 O 3 , TiC, SiC, TiN, CeO 2 , TiO 2 etc. [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The addition of 35 wt.% of WC on Ni based alloy have the highest microhardness and better wear resistant properties at elevated temperatures as reported by [3,[10][11][12][13][14][15].…”

“…The average value of microhardness was reported as 1223 HV 0.3 and the main erosion mechanism of the coating was attributed to brittle mode. Some of the authors studied the effect of the addition of Cr 3 C 2 -25NiCr and SiC to NiCrBSi alloy for sliding wear applications, which positively influences the coefficient of friction and the wear rate of the coating [17,18]. Harsha et al [19] studied the influence of CrC in flame sprayed NiCrSiB coating.…”

Tribo-performance analysis of HVOF sprayed 86WC-10Co4Cr & Ni-Cr2O3 on AISI 316L steel using DOE-ANN methodology

“…The high-velocity oxy-fuel (HVOF) spraying technique is universally used to protect the pump components in solid-liquid flow conditions such as oxidation, abrasion and corrosion (Buytoz et al , 2013). Numerous researchers have been using Ni- and WC-based coatings to enhance the wear-resistant to the stainless steel in the slurry environment.…”

Wear Characteristics of FeW/FeW-B4C Coatings Produced by TIG Process

“…While nickel, cobalt, iron and titanium based alloys are used as matrix in the production of these composite coatings, in terms of reinforcement elements, hard reinforcement particles such as SiC, TiC, B 4 C, WC, TiB 2 and Cr 3 C 2 are preferred [9][10][11][12][13][14][15][16][17]. Recently, the application of B 4 C in the surface coating pocesses has attracted more and more attentions for its super hardness, thermal stability, high melting point (2450 °C), low density (2.52 g/cm 3 ) and super mechanical properties [18].…”