Effect of spray parameters on residual stress build-up of HVOF sprayed aluminium/tool-steel functionally graded coatings

Hasan, Mohammed Adnan; Stokes, Joseph; Looney, L.; Hashmi, M.S.J.

doi:10.1016/j.surfcoat.2008.02.016

Cited by 17 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In HVOF spraying, powders are accelerated by the supersonic jet achieved by expansion of the combustion products between oxygen and fuel gases through a convergent-divergent nozzle. Some drawbacks are related to oxidation, to the possible generation of tensile residual stresses [18,19] (whereas compressive residual stresses are preferred in coatings) and, sometimes, thermal deterioration due to the relatively high temperature [3,20].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Effect of spraying parameters on the microstructural and corrosion properties of HVAF-sprayed Fe–Cr–Ni–B–C coatings

Milanti

Matikainen

Koivuluoto

et al. 2015

Surface and Coatings Technology

View full text Add to dashboard Cite

Thermally sprayed Fe-based coatings have been extensively studied as future solution in order to replace more expensive, harmful and environmentally dangerous Ni-and WC-based coatings for several industrial applications where high corrosion and wear resistance is required. Aim of the present study is to investigate the effect of spraying parameters on the microstructure and the corrosion resistance of Fe-based coatings manufactured with the High Velocity Air Fuel (HVAF) thermal spray process. Six sets of thermal spraying parameters have been chosen and their effect on the overall quality of coatings was investigated. All HVAF coatings showed comparably dense microstructure with near-zero oxidation, proving the high quality of the deposition process. However, higher anti-corrosion and mechanical properties were achieved by increasing the spraying air pressure and decreasing the particle

show abstract

Section: Accepted Manuscriptmentioning

confidence: 99%

Effect of spraying parameters on the microstructural and corrosion properties of HVAF-sprayed Fe–Cr–Ni–B–C coatings

Milanti

Matikainen

Koivuluoto

et al. 2015

Surface and Coatings Technology

View full text Add to dashboard Cite

show abstract

“…In spite of relatively low deposition temperature, the thermal stresses are still present in the deposited coatings. This is the main reason for applying functionally graded coatings, FGC [89]. The FGC enables gradual change in coefficient of thermal expansion (CTE) and in Young's modulus which decreases stress level and increases bond strength.…”

Section: High Velocity Oxy-fuel and High Velocity Air-fuel Sprayingmentioning

confidence: 99%

“…The FGC enables gradual change in coefficient of thermal expansion (CTE) and in Young's modulus which decreases stress level and increases bond strength. The FGC are particularly useful in reducing thermal stresses in thick deposits [89]. Hardness and ductility are the HVOF coatings properties which are often tailored to avoid the brittle breakup of coating's spallation [90].…”

Section: High Velocity Oxy-fuel and High Velocity Air-fuel Sprayingmentioning

confidence: 99%

Review of Functionally Graded Thermal Sprayed Coatings

et al. 2020

View full text Add to dashboard Cite

The paper briefly describes major thermal spray techniques used to spray functionally graded coatings such as atmospheric plasma spraying, high velocity oxy-fuel spraying, suspension and solution precursor plasma spraying, and finally low and high pressure cold gas spray method. The examples of combined spray processes as well as some examples of post spray treatment including laser and high temperature treatments or mechanical one, are described. Then, the solid and liquid feedstocks used to spray and their properties are shortly discussed. The reviewed properties of functional coatings include: (i) mechanical (adhesion, toughness, hardness); (ii) physical (porosity, thermal conductivity and diffusivity, thermal expansion, photo-catalytic activity), and; (iii) bioactivity and simulated body fluid (SBF) corrosion. These properties are useful in present applications of functionally graded coatings as thermal barriers, the bioactive coatings in prostheses, photo-catalytic coatings in water treatment, coatings used in printing industry (anilox and corona rolls). Finally, some of the future possible fields of functional thermal sprayed coatings applications are discussed, e.g., to coat polymer substrates or to use the cheap technology of low pressure cold gas spray method instead of expensive technology of vacuum plasma spraying to obtain bond coatings.

show abstract

“…While numerous studies [1,16,20,33,34,36,43] indicate the importance of process parameters associated with thermal spraying; pioneering works by Fang et al [44], Murugan et al [37] and Qin et al [38] suggests that the flow rate of the fuel ( ), flow rate of oxygen ( ), feed rate of the coating powder ( ̇ ) and standoff distance ( ) between the nozzle and the substrate as the four most significant HVOF parameters that influences the properties associated with the resultant coating. Though the suggestions in literature were based on studies conducted in alternative materials [45][46][47][48][49], three primary configurations (Config.)…”

Section: Thermal Sprayingmentioning

confidence: 99%

“…Even though numerous methodologies such as full factorial, response surface are available, the Taguchi model is the chosen DoE approach considered in this study [32]. Numerous studies have reported the successful use of the Taguchi model for the optimization of coating related parameters [33][34][35][36][37][38], however, no literature reports attempts on NiCrSiB-Al2O3 coating. Moreover, optimum parameters required for HVOF sprayed NiCrSiB-Al2O3 coating targeting Erosion Wear Loss (EWL) are not available.…”

Section: Introductionmentioning

confidence: 99%

Parametric optimisation of high-velocity oxy-fuel nickel-chromium-silicon-boron and aluminium-oxide coating to improve erosion wear resistance

Praveen

Arjunan

2019

Mater. Res. Express

View full text Add to dashboard Cite

Nickel (Ni) based alloy coatings are gaining momentum due to its superior mechanical properties contributed by the dispersion of hard carbides and borides, which is substantially influenced by the processing technique. Accordingly, this work investigates High-Velocity Oxy-Fuel (HVOF) thermal spraying of Nickel-Chromium-Silicon-Boron (NiCrSiB) and Aluminium Oxide (Al2O3) at a 60:40 (wt.%) ratio on AISI304 stainless steel substrate. The influence of HVOF spray parameters such as oxygen, fuel, and powder feed rate in addition to standoff distance on the erosion resistance was studied.The parametric model identified the rate of powder feed and standoff distance as the two most significant parameters affecting the erosion behaviour. The optimum parametric values for oxygen, fuel and powder feed rate was identified as 260 lpm, 65 lpm and 28 g/min respectively at a standoff distance of 250 mm for the highest wear resistance. The results of this study show that that NiCrSiB-Al2O3 HVOF coating features a ductile erosion behaviour and offers 1.6 times more wear resistance at a 90° impact angle in comparison to 30°.

show abstract

Effect of spray parameters on residual stress build-up of HVOF sprayed aluminium/tool-steel functionally graded coatings

Cited by 17 publications

References 13 publications

Effect of spraying parameters on the microstructural and corrosion properties of HVAF-sprayed Fe–Cr–Ni–B–C coatings

Effect of spraying parameters on the microstructural and corrosion properties of HVAF-sprayed Fe–Cr–Ni–B–C coatings

Review of Functionally Graded Thermal Sprayed Coatings

Parametric optimisation of high-velocity oxy-fuel nickel-chromium-silicon-boron and aluminium-oxide coating to improve erosion wear resistance

Contact Info

Product

Resources

About