Laser Surface Melting Cr–Ni Coatings, in the Erosive-Corrosive Atmosphere of Boilers

Garcı́a, José R.; Cuetos, J.M.; Fernández, Estéban; Higuera, V.

doi:10.1007/s11249-007-9252-7

Cited by 9 publications

(4 citation statements)

References 29 publications

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“…44 the case of thermally sprayed hard metal coatings instrument-based measurement of hardness and Young's modulus at low loads captures the properties of hard particles, of not only the soft matrix but also the combination of both. Garcı´a et al 81 reported that by using laser melting, non-porous and homogeneous coating can be obtained. Laser-melted coatings perform better than similar coatings and non-lasermelted austenitic steel when facing fly ash corrosion at temperatures of 500 C and 800 C. Author also suggests that erosion causing weight loss was negligible over the 24-h period of the experiments.…”

Section: Discussionmentioning

confidence: 99%

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Erosive wear behavior of sprayed metal matrix composites: An overview

Pasha¹,

Kaleemulla

2013

Proceedings of the Institution of Mechanical Engineers, Part J:

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Metal matrix composites are being increasingly used in aerospace and automobile industries attributed to their improved properties such as elastic modulus, hardness, tensile strength at room and elevated temperatures, wear resistance combined with significant weight savings over unreinforced alloys. Because of these capabilities it can be applied for aviation industries, where the most critical areas of an aircraft to be affected by corrosion are engine inlets, control surfaces landing gear doors, radome, and aerodynamic fairings. They are subjected to wear and corrosion processes, which can occur simultaneously. This article critically reviews the present and past state of understanding of the erosive wear behavior of metals and alloy. First of all, the different types of reinforcing with different coated metal matrix composites are reviewed. The accuring failure mechanisms are discussed. This is followed by discussion of the essential features of erosive wear. Various predictions and models developed by different investigators describing the erosion rate are presented. Finally, the relevant areas for future studies are indicated.

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Section: Discussionmentioning

confidence: 99%

“…García et al. 81 reported that by using laser melting, non-porous and homogeneous coating can be obtained. Laser-melted coatings perform better than similar coatings and non-laser-melted austenitic steel when facing fly ash corrosion at temperatures of 500℃ and 800℃.…”

Section: Discussionmentioning

confidence: 99%

Erosive wear behavior of sprayed metal matrix composites: An overview

Pasha¹,

Kaleemulla

2013

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Composite with a metal matrix, metals-ceramics are characterized by high resistance to tribological and corrosive wear [17][18][19]. Based on the literature review [20][21][22][23][24][25], composite coatings based on nickel or aluminum were selected for testing.…”

Section: Introductionmentioning

confidence: 99%

After-Machining Surface Layer of Composite Coatings Obtained by Thermal Spraying

Starosta

Dyl

2022

Coatings

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The surface of machine elements is changed to improve their mechanical properties. Ceramic-metal composite coatings are mainly used to increase the durability of machine parts. Therefore, new materials are constantly searched for application in the future development of metal and ceramic composites. The nickel and iron elements are usually used as a base and Al2O3 as tough particles. The welding technology for applying alloy and composite coatings is widely used. The common technology used to apply composite coatings is thermal spraying. It is a simple technology and very useful for the production or regeneration of machines. The surface layer is very rough and porous after applying the coating by thermal spraying. In order to obtain the proper surface quality of alloy and composite coatings, after-machining should be used. Many parts of machines strive to achieve an accurate surface. Therefore, a certain roughness is often required. The arithmetic mean of the ordinates of the surface roughness profile was (Ra = 0.16–1.25 μm). The article presents the influence of finishing on the roughness of the surface layer of the coating. After plastic working and machining, the roughness of the surface layer of the coating was reduced. However, it can be seen that, after plastic working, there is a strengthening of the surface layer of the coating and most of the pores were closed.

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“…Metal matrix composite are used in such fields of technology, such as: aerospace, electronics, energy, industry, defense, automotive, aviation, shipbuilding, and more. Based on a literature review, in the study it has been considered composite coatings based on nickel with aluminum [13,14,15,16].…”

Section: Introduction To the Topic Of Finishing Coatings By Machiningmentioning

confidence: 99%

Finishing of Nickel Matrix Composite Coatings

Dyl¹,

Starosta²

2019

Preprint

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Metal matrix composite are used in such fields of technology, such as: aerospace, electronics, energy, industry, defense, automotive, aviation, shipbuilding, and more. Composite coatings of ceramic -metals is used primarily to enhance the durability of machine parts. Therefore, new materials are permanently looked for, what has resulted in the past in development of composite materials. The coatings dispersed are consisting of metallic matrix (metals and their alloys) and small non-metallic particles. The deposition of ceramic particles simultaneously with metallic matrix leads often to composite coatings possessing properties much better than those of metallic coating. The nickel and less often, other iron group elements are usually used as a matrix and Al2O3 as tough particles. The welding technology of applying alloy and composite coatings is widely used. The technology of infrasound thermal spraying of metal matrix composite coatings was presented. It is a simple technology and a very useful one in ship machinery regeneration during the cruise craft (e.g. internal combustion engines, torque pumps, separators). The metal matrix composite coatings must undergo finishing due to high surface roughness after application. In the article to used finishing by plastic working and machining of coatings nickel matrix composite was proposed.

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Laser Surface Melting Cr–Ni Coatings, in the Erosive-Corrosive Atmosphere of Boilers

Cited by 9 publications

References 29 publications

Erosive wear behavior of sprayed metal matrix composites: An overview

Erosive wear behavior of sprayed metal matrix composites: An overview

After-Machining Surface Layer of Composite Coatings Obtained by Thermal Spraying

Finishing of Nickel Matrix Composite Coatings

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