Wear behaviour of thermal flame sprayed FeCr coatings on plain carbon steel substrate

Uyulgan, Bahadır; Dokumacı, Esra; Çelik, Erdal; Kayatekin, Isil; Azem, N. Funda Ak; Özdemir, İ.; Toparlı, Mustafa

doi:10.1016/j.jmatprotec.2007.02.044

Cited by 47 publications

(24 citation statements)

References 19 publications

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“…The hardness values of the phase (FeCr)a ( Fig. 9) are averaged 700 HV and are in good agreement with those obtained on the (FeCr)a solid solution of the works of the thermal spraying the (Fe, Cr) on a steel substrate [27]. The microhardness of Zone II is the highest in the junction ( 1,390 HV).…”

Section: Microhardnesssupporting

confidence: 83%

Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Taouinet¹,

Kamel²,

Lebaili³

2013

Materials and Manufacturing Processes

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Diffusion bonding in the solid state between the zirconium alloy (Zircaloy-4) and AISI 304L stainless steel (304L SS) was studied at a temperature of 1,050 C under a dynamic pressure in a controlled atmosphere. We discussed the morphology of the interface formed by determining the distribution of the various chemical constituents as well as the location and the identification of the different phases nature formed through due to chemical exchange reactions that occurred by diffusion through the interface. Observations and chemical analysis were performed by environmental scanning electron microscope (ESEM), energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The junction is composed of three distinct zones formed of a solid solution (FeCr)a rich in Cr as a homogeneous edging from steel side. The type phase Zr(Fe,Cr) 2 occupies the Zone II and phase Zr 2 (Fe,Ni) Zone III between them settled the eutectic Zr a -Zr(Fe,Cr) 2 . . The observations and analysis of the fracture surfaces obtained by impact testing showed a morphology of a brittle fracture by cleavage which is located at the interface. The microhardness filiation at the interface of both materials diffusion bonded is very heterogeneous.

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Section: Microhardnesssupporting

confidence: 83%

Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Taouinet¹,

Kamel²,

Lebaili³

2013

Materials and Manufacturing Processes

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“…A pre-alloyed wire or powder is melted by injection into a gaseous oxygen-fuel flame at about 50 m/s. The fuel may be acetylene, propane or hydrogen and the flame temperature depends on the gas used; for an oxyacetylene flame it can reach about 3000 °C [2,4,7].…”

Section: Flame Spray Coatingsmentioning

confidence: 99%

Ni-Al and NiO-Al Composite Coatings by Combustion-Assisted Flame Spraying

et al. 2014

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Abstract:A new, cost-efficient and on-site-applicable thermal spraying process for depositing NiAl metallic overlay or bond-coat coatings for high temperature applications by synthesizing the desired intermetallic phases in-flight during oxy-acetylene flame spraying is presented. Base-metal powders were used for spraying and, by adjusting the spraying conditions, excellent NiAl-based coatings were achieved on various substrates, including mild steel, stainless steel and aluminium alloys. Expensive, pre-alloyed or agglomerated powders are avoided and the method is very promising for in-situ work and repairs. We call the new method "Combustion-Assisted Flame Spraying" (CAFSY) and its viability has been demonstrated at a pre-industrial level for coating metallic substrates. The NiAl-based coatings produced by CAFSY exhibit very high integrity with good adhesion, very low porosity, high surface hardness and high erosion resistance at a substantially lower cost than equivalent coatings using pre-prepared alloy powders.

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“…The flame spray process is characterized as a low particle velocity process, which results in comparatively larger grain size, lower bond strength, and higher porosity. Moreover, this process is still popular in industries as it is easier to handle, more adaptable to manufacturing processes, and above all more economical [1,2]. Literature survey revealed that various methods such as hot isostatic pressing, sintering, densification, rolling, etc.…”

Section: Introductionmentioning

confidence: 99%

Study of mechanical and metallurgical characteristics of flame sprayed NiCrBSi as-sprayed and continuous compacted coating

Sharma

Dwivedi

Jain

2009

Proceedings of the Institution of Mechanical Engineers, Part J:

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Thermal spray processes such as high-velocity oxy-fuel and detonation spraying are more commonly used in industries for depositing coating material as compared to flame spray coatings because of better coating properties (high bond strength, low porosity, and high hardness) offered by the high-velocity flame spraying process. The flame spray coatings are economical but are not frequently used because of coarse microstructure, high porosity, and lowhardness-related problems. The above problems associated with flame spraying can be reduced using innovative techniques like hot isostatic pressing and rolling of coated material at high temperature. Mostly these methods are completed in two stages, which in turn make the postprocessing of the coating uneconomical. Therefore, in the present investigation an attempt has been made to integrate the coating deposition and post-processing (compaction) of NiCrBSi coating in one step. In the present work, the NiCrBSi flame sprayed coatings after compaction were compared with as-sprayed coatings in terms of microstructure, porosity, and hardness. Field emission scanning electron microscopy and X-ray diffraction analysis of coatings were also carried out for elemental and phase analysis of its micro-constituents. It was observed that continuous compaction of the flame sprayed coating results in higher hardness, reduced porosity, and finer grain size as compared to that of as-sprayed coating.

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Wear behaviour of thermal flame sprayed FeCr coatings on plain carbon steel substrate

Cited by 47 publications

References 19 publications

Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Ni-Al and NiO-Al Composite Coatings by Combustion-Assisted Flame Spraying

Study of mechanical and metallurgical characteristics of flame sprayed NiCrBSi as-sprayed and continuous compacted coating

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