3.7 HVOF Coating of Nickel Based Alloys: Surface and Mechanical Characteristics

Yilbaş, Bekir Sami

doi:10.1016/b978-0-12-803581-8.09170-0

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…The HVOF method is widely used due to its low cost, applicability and ease of processability. 84 High velocity air fuel (HVAF) is a variant of the HVOF method, which can apply coatings at a higher rate, with lower temperatures resulting in lower oxide content, and sometimes having superior properties compared to the HVOF method, such as greater wear resistance. 85 Compared to the HVOF method, the HVAF method has a lower operating temperature and uses dry air in the gas mixture to create a flame in addition to the gas mixture.…”

Section: Coating Deposition Techniquesmentioning

confidence: 99%

Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Vasiljević

Glišović

Stojаnović

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Wear of a friction pair of brake (brake disc and pads), in addition to reducing the active safety of vehicles, leads to the formation of particles that can affect the environment and human health. In addition to the technologies that are being developed for the collection of particles created by the wear of brakes during braking process, today new materials are being introduced, as well as various technologies for processing friction pairs with the aim of reducing brake wear and thus the formation of particles. Furthermore, today, technologies for coating (cladding) the friction surfaces of disc brakes with some materials are increasingly applied and researched, in order to reduce the wear intensity (wear rate) of disc brakes, i.e. the emission of particles created by wear of friction pairs. The aim of this paper is to analyse and review different deposition techniques and materials used for brake discs coatings, as well as the effect it has on the wear rate of friction pair. There are many coating deposition techniques, and special attention is paid to the technology of laser hardfacing of brake rotors.

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Section: Coating Deposition Techniquesmentioning

confidence: 99%

Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Vasiljević

Glišović

Stojаnović

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Most importantly coatings developed using this technique are quite economical compared to other thermal spray techniques. 4 Taking a cue from this many nickelbased coatings such as NiCrFeSiB, 5 Cr 3 C 2 -25NiCr, 6 Ni-(Ti, W)C, 7 Ni 3 Ti, 8,9 and NiTi, 10 were developed using the HVOF process. The coatings were deposited on the boiler pipes and tubes made up of medium carbon steel, austenitic and martensitic steel to counter surface degradation.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanotubes on microhardness and adhesion strength of high-velocity oxy-fuel sprayed NiCr–Cr₃C₂ coatings

Kuruba¹,

Gaikwad²,

Natarajan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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NiCr–Cr3C2 coatings are widely used for high temperature and tribological applications due to their high hardness, oxidation, and wear resistance properties. In the present investigation, an attempt is made to further enhance the hardness and adhesion strength of NiCr–Cr3C2 coatings by reinforcing them with multi-walled carbon nanotubes. The carbon nanotubes (3–7 wt%) with varying weight percentages were mixed with NiCr–Cr3C2 using a planetary ball rolling mill and sprayed on SA213 T12 (T12 alloy steel tube) using a high-velocity oxy-fuel spraying process. The microstructures of mixed powder, coating cross-section, and fractured coating surface were characterized using a scanning electron microscope while X-ray diffraction was used for phase identification in the fractured coating surface. The coated samples were subjected to microhardness and adhesion strength tests according to ASTM E384 and ASTM D4541-09 standards. Out of all coatings, NiCr–Cr3C2/7% carbon nanotube composite coating showed the lowest porosity of 1.17%, highest microhardness, and adhesion strength of 563.8 HV and 55.8 MPa, respectively. A fracture analysis after a pull-off adhesion test revealed adhesion failure for NiCr–Cr3C2 coating and combined adhesion/cohesion failure for NiCr–Cr3C2/7% carbon nanotube composite coating.

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An experimental study on effect of titanium oxide coated heater substrate on pool boiling enhancement

Mahapatra

Kar

Swain

2022

Materials Today: Proceedings

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3.7 HVOF Coating of Nickel Based Alloys: Surface and Mechanical Characteristics

Cited by 4 publications

References 45 publications

Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Effect of carbon nanotubes on microhardness and adhesion strength of high-velocity oxy-fuel sprayed NiCr–Cr₃C₂ coatings

An experimental study on effect of titanium oxide coated heater substrate on pool boiling enhancement

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3.7 HVOF Coating of Nickel Based Alloys: Surface and Mechanical Characteristics

Cited by 4 publications

References 45 publications

Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Effect of carbon nanotubes on microhardness and adhesion strength of high-velocity oxy-fuel sprayed NiCr–Cr3C2 coatings

An experimental study on effect of titanium oxide coated heater substrate on pool boiling enhancement

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Product

Resources

About

Effect of carbon nanotubes on microhardness and adhesion strength of high-velocity oxy-fuel sprayed NiCr–Cr₃C₂ coatings