Plasma-sprayed composite coatings with reduced friction coefficient

Żórawski, W.; Chatys, R.; Radek, Norbert; Borowiecka-Jamrozek, J.

doi:10.1016/j.surfcoat.2008.04.026

Cited by 28 publications

(22 citation statements)

References 13 publications

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“…[1][2][3][4][5] Selecting reinforcement remains one of the most critical factors in realizing the best properties from the resultant SMMCs. [6][7][8][9] The widely used particles for reinforcing Al alloys are silicon carbide (SiC) and alumina (Al 2 O 3 ). [10][11][12][13][14][15] Besides their high hardness, they show low density and low cost comparing with other reinforcements.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Most studies [6][7][8][9][10][11][12][13][14][15][16] proved that SiC was more effective than Al 2 O 3 in the improvement of wear resistance of the resultant aluminum composite due to its higher hardness. [6][7][8][9][10][11][12][13][14][15][16] On the other hand, some investigations [17][18][19][20] suggested that Al/Al 2 O 3 composites were more stable and inert, and had better corrosion and high temperature behavior than Al/SiC. [17][18][19][20] In this sense, it may become practical to use both SiC particles and Al 2 O 3 particles (hybrid) as reinforcements to gain both of their benefits for improving the composite properties.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

et al. 2009

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Aluminum-base hybrid composites reinforced with mixtures of SiC and Al 2 O 3 particles 1.25 mm in average size have been fabricated on an A 1050-H24 aluminum plate by friction stir processing (FSP) and their wear resistance has been investigated as a function of the relative weight ratios of the particles. A mixture of SiC and Al 2 O 3 powders of different weight ratios was packed into a groove of 3 mm width and 1.5 mm depth cut on the aluminum plate, and covered with an aluminum sheet 2 mm thick. A FSP tool of square probe shape, rotated at a speed of 1500 rpm, was plunged into the plate through the cover sheet and the groove, and moved along the groove at a travelling speed of 1.66 mm/s. After the hybrid composite was fabricated on the Al plate, the homogeneity of the particles distribution inside the Al matrix has been evaluated from the macro/microstructure and hardness distribution. Moreover, the wear characteristics of the resulted hybrid composites were evaluated using a ball-on-disc wear tester at room temperatures at normal loads of 2 and 5 N. As a result, it was found that the reinforcement particles were distributed homogenously inside the nugget zone without any defects except some voids that appeared around the Al 2 O 3 particles. The average hardness decreased with increasing the relative content of Al 2 O 3 particles. Regarding the wear characteristics, the wear volume losses of the hybrid composites depended on the applied load and the relative ratio of SiC and Al 2 O 3 particles. The hybrid composite of 80% SiC þ 20% Al 2 O 3 showed superior wear resistance to 100% SiC and Al 2 O 3 or any other hybrid ratios at a normal load of 5 N.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

et al. 2009

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“…The microstructure of coatings results from their solidification and sintering. The coatings have a lamellar microstructure, which determines many of their properties [17]. A great numbers of factors should be to understood to perform the spraying process.…”

Section: Resultsmentioning

confidence: 99%

Metal-ceramic functionally graded materials – manufacturing, characterization, application

Chmielewski¹,

Pietrzak²

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Functionally graded materials (FGMs) belong to a new, continuously developing group of materials, finding application in various branches of industry. The idea of freely designing their construction profile, restricted only by the available manufacturing techniques, enables obtaining materials with composition and structure gradients having unprecedented properties. In this paper, selected results of works carried out by the authors and relating to the application of the developed metal-ceramic composites were presented in order to manufacture functionally graded materials for target purposes. Gradient structures with various construction profiles that can play different roles were produced on the basis on the following material pairs: Cr-Al2O3, NiAl-Al2O3 and Cu-AlN. Manufacturing conditions, microstructure characteristics and selected properties, crucial from the point of view of future applications, were presented.

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“…Similar effective simulation methods may be used in other research areas like e.g. heavy-duty machines (Domagala et al, 2018a;Domagala et al, 2018b), materials science (Tiziani et al, 1990;Bochenek et al, 2018) or special coatings techniques: plasma-sprayed (Zorawski et al, 2008), bioceramic (Dudek, 2009;Dudek, 2011) or electro-spark deposited (Scendo et al, 2014;Radek et al, 2018). It should be noted that accuracy overfitting, typically met in the numerical simulation is not reliable and should be moderated by fuzzy uncertainty (Pietraszek et al, 2014;Pietraszek et al, 2017a) and resampling from real experimental data e.g.…”

Section: Methodsmentioning

confidence: 99%

Analysis of the Influence of the Heat-Absorbing Surface of an Air-Cooled Solar Collector on its Thermal and Mechanical Properties

Zhelykh

Ulewicz

Kozak

et al. 2019

System Safety: Human - Technical Facility - Environment

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This paper presents the analysis of existing forms of heat absorbing surfaces of air solar collectors, which gained the greatest popularity in the world. The obtained data allowed to conclude that there is a need for the development of solar collectors with air as a coolant with an improved form of heat absorber, which will reduce the operational and capital costs of solar systems and allow the efficient use of such structures in a moderate climate without additional mechanisms for the transfer of coolant. The use of computer simulation helped to compare the thermal characteristics of air-borne solar collectors of a different design. The substantiation of the expediency of installing as a heat absorber of flow turbulators in the form of a screw has been fulfilled, as well as the height of the air channel of the solar collector has been determined, in which the maximum heating of the transfer medium is observed. In addition, the loss of pressure in the air channel of the solar collector with flow turbulators was determined and the comparison of the obtained data with the values of pressure losses in the air collector of the matrix type and the air collector with V-shaped ribs was made.

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Plasma-sprayed composite coatings with reduced friction coefficient

Cited by 28 publications

References 13 publications

Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

Metal-ceramic functionally graded materials – manufacturing, characterization, application

Analysis of the Influence of the Heat-Absorbing Surface of an Air-Cooled Solar Collector on its Thermal and Mechanical Properties

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