Erosion studies of cermet-coated ASTM A36 steel

Abstract

Purpose This paper aims to perform the solid particle erosion studies in simulated coal-fired boiler conditions with a view to compare the erosion behavior of two different types of detonation gun (D-Gun) sprayed cermet coating powders, that is, WC-12%Co and Cr3C2-25%NiCr on ASTM A36 steel and bare (uncoated) ASTM A36 steel. Design/methodology/approach Erosion studies were performed using an air jet erosion test rig at impingement angles of 45°, 60° and 90°. During the erosion studies weight loss, erosion rates in terms of volume loss (mm3/g) and measurement of erosion profiles were determined using optical profilometer. Findings Both cermet coatings had successfully protected the ASTM A36 steel from erosion at impingement angles of 45°, 60° and 90°. In the case of bare ASTM A36 steel, the erosion rates were maximal at an impingement angle of 45° and minimal at an impingement angle of 90°, thus depicting the peculiar erosion behavior of ductile materials. WC-12%Co coated specimens exhibited erosion behavior that is closer to the behavior of ductile materials. Cr3C2-25%NiCr coated specimens exhibited the maximum erosion rate at an impingement angle of 90° and minimum at an impingement angle of 45°, hence depicting the typical behavior of brittle materials. Practical implications It is expected that these results will contribute to the improvement of erosion resistance of induced draft fans, by the application of D-Gun sprayed WC-12%Co and Cr3C2-25%NiCr cermet coatings. Originality/value This paper evaluates the solid particle erosion behavior of bare and cermet-coated ASTM A36 steel which will be helpful in choosing the suitable cermet coating for induced draft fan applications.

Performance analysis of erosion resistant Mo2C reinforced WC-CoCr coating for pump impeller with Taguchi’s method

“…However, the kinetic energy of particles increases owing to the increase in their velocity which consequently contributes to bombardment on the testing specimen with a high impact. A similar type of observation was reported by some researchers in recent studies (Desale et al , 2005; Shibe and Chawla, 2019).…”

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

“…Researchers (Chowdhury et al , 2016; Thakur and Arora, 2017; Javaheri et al , 2018; Shibe and Chawla, 2019) reported the common erosion mechanisms such as microcutting, pits, fractures and abrasion-erosion in the brittle materials. However, plowing, deformations and lip formations are common mechanisms on case of ductile materials (Walker and Robbie, 2013; Walker and Hambe, 2015; Kumar et al , 2018b; Shibe and Chawla, 2019).…”

“…They found that NiBCrSiWCCo coating underwent to lower slurry erosion than NiCr 2 O 3 coating. Shibe and Chawla (2019) studied the solid particle erosion of WC-12%Co and Cr 3 C 2 -25%NiCr D-Gun coated on ASTM A36 steel under the coal-fired boiler conditions. The identified that the Cr 3 C 2 -25%NiCr coating shows maximum erosion rate at 90° impact angle and minimum at 45°.…”

Numerical and experimental research on the erosion of solid-liquid two-phase flow in transport butterfly valve based on DEM method

“…Subsequently, many researchers developed various erosion models to study pipeline erosion (Bitter, 1963;Mclaury, 1996;Raymond, 1994;Tabakoff et al, 1979;Zhang et al, 2007). Shibe and Chawla (2019) simulated the corrosion of solid particles under the conditions of coal-fired boilers and used a jet erosion tester to conduct erosion studies at impact angles of 45°, 60°and 90°. Pouraria et al (2020) used the dense discrete particle model (DDPM) to study the erosion of elbows and the erosion rate decreased under high particle loads.…”