Effect of Heat Treatment on Wear Resistance of Nickel Aluminide Coatings Deposited by HVOF and PTA

Benegra, Marjorie; Santana, Ana Luiza Beltrão; Maranho, Ossimar; Pintaúde, Giuseppe

doi:10.1007/s11666-015-0266-7

Cited by 11 publications

(3 citation statements)

References 16 publications

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“…Concerning mechanical properties, up to 470 HV0.1 of hardness value was obtained for NiAl HVOF coatings [81] and even higher up to 750 HV0.1 when nanocrystalline powders are used [82], which have made them also attractive for wear resistance even in slurry conditions [83]. Recently, Benegra et al [84] compared the abrasive behavior of HVOF and PTA NiAl coatings and reported similar results. At room temperature and dry sliding conditions, friction coefficients as low as 0.3 at 90 N can be obtained with a AISI 52100 steel pin [85].…”

Section: Ni-al Coatingsmentioning

confidence: 87%

Transition Metal Aluminide Coatings and Initial Steps on Additive Manufacturing

Luis¹

2018

Intermetallic Compounds - Formation and Applications

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During the last decades, Fe-, Ni-and Ti-based aluminides have been studied in terms of bulk materials with an effort to develop alloying and processing strategies to overcome their low ductilities and toughness compared to conventional alloys. Whenever significant improvements can be addressed in this direction, they will be opened to an extensive range of industrial applications, especially those related to high temperature resistance requirements. In parallel, progressing interest has also been focused on their application as protective layers. This chapter is intended to provide a review of the evolution that has been made mainly during the last two decades of the several coating technologies devoted for this purpose. From thick to thin coatings are revised, with insight into coating microstructures and properties as well. Lack of space has forced the selection of those technologies arising most interest within last years; therefore, the content will follow this order: joining (laser cladding and electrospark deposition), thermal spraying (high velocity oxygen fuel and cold spraying) and physical vapor deposition (magnetron sputtering and cathodic arc deposition).

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Section: Ni-al Coatingsmentioning

confidence: 87%

Transition Metal Aluminide Coatings and Initial Steps on Additive Manufacturing

Luis¹

2018

Intermetallic Compounds - Formation and Applications

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“…Thus, HVOF thermal spraying seems to be the next step in increasing the wear resistance of metallic substrates. Among many thermal spray methods, the HVOF one has some features, which allow producing homogeneous coatings with very low porosity, which is very important in case of abrasive wear, corrosion, and cavitation resistance [37][38][39]. The primary form of the feedstock material is a powder, but since the last 15 years, many research groups have started to use another type of feedstocks, like suspension and solution ones [40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Cavitation Erosion and Sliding Wear of MCrAlY and NiCrMo Coatings Deposited by HVOF Thermal Spraying

Szala

Walczak

Łatka

et al. 2020

Advances in Materials Science

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AbstractThe investigation into wear resistance is an up-to-date problem from the point of view of both scientific and engineering practice. In this study, HVOF coatings such as MCrAlY (CoNiCrAlY and NiCoCrAlY) and NiCrMo were deposited on AISI 310 (X15CrNi25-20) stainless steel substrates. The microstructural properties and surface morphology of the as-sprayed coatings were examined. Cavitation erosion tests were conducted using the vibratory method in accordance with the ASTM G32 standard. Sliding wear was examined with the use of a ball-on-disc tribometer, and friction coefficients were measured. The sliding and cavitation wear mechanisms were identified with the SEM-EDS method. In comparison to the NiCrMo coating, the MCrAlY coatings have lower wear resistance. The cavitation erosion resistance of the as-sprayed M(Co,Ni)CrAlY coatings is almost two times lower than that of the as-sprayed NiCrMoFeCo deposit. Moreover, the sliding wear resistance increases with increasing the nickel content as follows: CoNiCrAlY < NiCoCrAlY < NiCrMoFeCo. The mean friction coefficient of CoNiCrAlY coating equals of 0.873, which almost 50% exceed those reported for coating NiCrMoFeCo of 0.573. The as-sprayed NiCrMoFeCo coating presents superior sliding wear and cavitation erosion resistance to the as-sprayed MCrAlY (CoNiCrAlY and NiCoCrAlY) coatings.

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“…The microstructure and the physical properties of the HVOF coating are highly dependent on the physical and chemical properties of the impinging particles, which in turn depends on parameters such as the nozzle design, fuel to oxygen ratio, substrate distance from nozzle, shape and size characteristics of the particle [22]. Several studies have reported highly dense and uniform coating, as a result of increasing the velocity of the particles which in turn resulted in compressed splats on the substrate surface [23][24][25]. Yuan et al [26] studied the wear resistance of HVOF sprayed WC-Co coatings by adding submicron-sized WC particles at the splats interface and reported a decrease in wear rate and improvement in micro-hardness.…”

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

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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°.

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Effect of Heat Treatment on Wear Resistance of Nickel Aluminide Coatings Deposited by HVOF and PTA

Cited by 11 publications

References 16 publications

Transition Metal Aluminide Coatings and Initial Steps on Additive Manufacturing

Transition Metal Aluminide Coatings and Initial Steps on Additive Manufacturing

Cavitation Erosion and Sliding Wear of MCrAlY and NiCrMo Coatings Deposited by HVOF Thermal Spraying

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

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