Influence of Process Parameters on High Velocity Oxy-Fuel Sprayed Cr3C2-25%NiCr Coatings

Xie, Mingxiang; Lin, Yuehe; Peng, Ke; Wang, Shuoyu; Zhang, Shihong; Zhen, Zhicheng; Ge, Liangshui

doi:10.3390/coatings7070098

Cited by 23 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The HVOF process uses high kinetic energy of the particles having relatively low temperature; therefore, the grain growth is restricted, and it is possible to obtain coatings with highly fragmented grain. At the same time, high velocity (400-800 m/s) limits the harmful effect of oxygen on the microstructure of powder grain during the flight, and its impact on the coating being formed [7]. In particular, the coating produced in the HVOF process, consisting of hard Cr 3 C 2 grains, which are embedded in the nickel-chromium alloy matrix, is characterized by very good resistance to wear at high temperature, even up to 800 • C [8].…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties and Wear Behavior of High-Velocity Oxygen-Fuel (HVOF) Sprayed (Cr3C2-NiCr+Al) Composite Coating on Ductile Cast Iron

Książek

Tchórz

2019

Coatings

View full text Add to dashboard Cite

In the present work Cr3C2-NiCr powder containing Al particles was deposited on ductile cast iron with high-velocity oxy-fuel (HVOF) thermal spray coating technique. An investigation was conducted to determine the role of Al particles in the Cr3C2-NiCr coating produced with HVOF technique on microstructure, mechanical and wear properties in a system Cr2C3-NiCr coating/ductile cast iron. The microstructure of the HVOF-sprayed Cr3C2-NiCr+Al coating was characterized by light microscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and energy dispersive X-ray spectroscopy (EDS). Microstructure analysis reveals the formation of coating with low porosity, good adhesion to the substrate and dense structure with irregularly shaped particles of Al arranged in strips and finely fragmented Cr3C2 particles embedded in a nanocrystalline Ni-Cr alloy matrix. In addition, the results were discussed in reference to examination of bending strength considering cracking and delamination in the system of (Cr3C2-NiCr+Al)/ductile cast iron as well as microhardness and wear resistance of the coating. It was found that the addition of Al particles significantly increased resistance to cracking and wear behaviour in the studied system.

show abstract

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties and Wear Behavior of High-Velocity Oxygen-Fuel (HVOF) Sprayed (Cr3C2-NiCr+Al) Composite Coating on Ductile Cast Iron

Książek

Tchórz

2019

Coatings

View full text Add to dashboard Cite

show abstract

“…Thermally sprayed coatings are often used to increase the resistance of the parent material against corrosion and wear [3][4][5][6][7][8][9][10][11][12][13][14][15]. The desired properties of coatings applied by the high-velocity oxygen fuel (HVOF) method also include high density and good adhesion, which are characterized by the ability to form coatings with a small portion of oxides and phase transformations [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…For WC-FeCrAl and WC-WB-Co coatings, comparative studies are missing; however for conventional WC-Co coatings, there is a large amount of relevant literature [1][2][3][4][5]7,12,15,[20][21][22][23][24]. Therefore, a team of authors, Bolelli et al [25][26][27][28], decided to elaborate with a detailed comparative study focused on the microstructure, micromechanical properties, residual stresses, and wear of the WC-FeCrAl coating in comparison with the conventional WC-CoCr coating.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Wear Behavior and Corrosion Resistance of WC-FeCrAl and WC-WB-Co Coatings

Brezinová

Landová

Guzanová

et al. 2018

Metals

View full text Add to dashboard Cite

The paper is focused on investigating the quality of two grades of thermally sprayed coatings deposited by high-velocity oxygen fuel (HVOF) technology. One grade contains WC hard particles in an environmentally progressive Ni-and Co-free FeCrAl matrix, while the second coating contains WC and WB hard particles in a cobalt matrix. The aim of the experimental work was to determine the effect of thermal cyclic loading on the coatings' resistance to adhesive, abrasive and erosive wear. Abrasive wear was evaluated using abrasive cloth of two grit sizes, and erosive wear was evaluated by a dry-pot wear test in a pin mill at two sample angles. Adhesion wear resistance of the coatings was determined by a sliding wear test under dry friction conditions and in a 1 mol water solution of NaCl. Corrosion resistance of the coatings was evaluated using potentiodynamic polarization tests. Metallographic cross-sections were used for measurement of the microhardness and thickness and for line energy-dispersive X-ray (EDX) analysis. The tests proved the excellent resistance of both coatings against adhesive, abrasive, and erosive wear, as well as the ability of the WC-WB-Co coating to withstand alternating temperatures of up to 600 • C. The "green carbide" coating (WC-FeCrAl) can be recommended as an environmentally friendly replacement for Ni-and Co-containing coatings, but its operating temperature is strictly limited to 500 • C in air.

show abstract

“…However, the Z3 coating contains large amounts of chromium, nickel and carbon. According to the literature data [8,11,21], cermetal coatings of Cr 3C2-NiCr type produced by the HVOF method may contain Cr3C2, Cr7C3, Cr2O3 and phases made of chromium and nickel, the matrix may contain amorphous phases and nanocrystalline metal grains. The hardness of Cr3C2-NiCr coatings is in the range of 850÷1150 HV [1,6,11].…”

Section: Characteristics Of the Tested Coatingsmentioning

confidence: 99%

Cavitation erosion and sliding wear resistance of HVOF coatings

Szala

Walczak

2018

Weld. Tech. Rev.

View full text Add to dashboard Cite

The aim of the work was to investigate the resistance to cavitation erosion and sliding wear of sprayed HVOF coatings. M(Ni,Co)CrAlY and Cr3C2-NiCr based coatings were deposited using HVOF method onto stainless steel substrate grade AISI 304. As-sprayed coatings’ surface morphology was examined by SEM-EDS and profilometer methods. Cavitationerosion tests were conducted in distilled water with the use of vibratory rig and stationary specimen method. Cavitation erosion curves were plotted as well as cavitational wear mechanism was observed with the use of SEM microscope. Sliding wear tests were performed using the ball-on-disc tribotester with counter-specimen (ball) made of steel 100Cr6. Wearrates and coefficient of friction were computed. Normalized wear resistance with referenceto stainless steel reference sample AISI 304 was calculated. In addition, comparable analysis of wear resistance results was conducted. M(Ni,Co)CrAlY coating presented the highest cavitation erosion resistance, therefore Cr3C2-NiCr coating represented the highest sliding wear resistance of all tested materials.

show abstract

Influence of Process Parameters on High Velocity Oxy-Fuel Sprayed Cr3C2-25%NiCr Coatings

Cited by 23 publications

References 26 publications

Microstructure, Mechanical Properties and Wear Behavior of High-Velocity Oxygen-Fuel (HVOF) Sprayed (Cr3C2-NiCr+Al) Composite Coating on Ductile Cast Iron

Microstructure, Mechanical Properties and Wear Behavior of High-Velocity Oxygen-Fuel (HVOF) Sprayed (Cr3C2-NiCr+Al) Composite Coating on Ductile Cast Iron

Microstructure, Wear Behavior and Corrosion Resistance of WC-FeCrAl and WC-WB-Co Coatings

Cavitation erosion and sliding wear resistance of HVOF coatings

Contact Info

Product

Resources

About