Structure, physical properties and fractal character of surface topography of the Ti+TiC coatings on sintered high speed steel

Kwaśny, W.; Dobrzański, L. A.

doi:10.1016/j.jmatprotec.2005.02.216

Cited by 8 publications

(9 citation statements)

References 13 publications

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“…CNTs have a tremendously high surface area, good electrical conductivity. This CNT is 100 times stronger than steel (Mamalis et al, 2004) and weight is 1/6 th weight of steel. CNTs having high strength to weight ratio used in aero space industry.…”

Section: Carbon Nano Tubes (Cnt's)mentioning

confidence: 94%

“…The method is called Power Differentiation method. Kwasny et al (2005) presented structure, texture, thickness, micro-hardness and fractal dimension of surface topography of the two-layer TiC coatings onto the ASP 30 sintered high speed steel. The fractal dimension value of surface topography of analyzed coatings was determined using the projective covering method basing on investigation results in the atomic force microscope.…”

Section: Introductionmentioning

confidence: 99%

“…Guu (2005) proposed the surface morphology, surface roughness and microcrack of AISI D2 tool steel machined by the electrical discharge machining (EDM) process by means of the atomic force microscopy (AFM) technique. Mamalis et al (2004) has written to give a consolidated view of the synthesis, the properties and applications of carbon nano tubes in mechanical, automotive and space industries. Prabhu et al (2008) proposed nanosurface generation in grinding process using multi wall carbon nanotube mixed with SAE20w40 coolant oil to improve the surface finish of grinding process.…”

Section: Introductionmentioning

confidence: 99%

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Fractal dimensional surface analysis of AISI D2 Tool steel material with nanofluids in grinding process using atomic force microscopy

Prabhu¹,

Vinayagam²

2011

J. Braz. Soc. Mech. Sci. & Eng.

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Section: Carbon Nano Tubes (Cnt's)mentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fractal dimensional surface analysis of AISI D2 Tool steel material with nanofluids in grinding process using atomic force microscopy

Prabhu¹,

Vinayagam²

2011

J. Braz. Soc. Mech. Sci. & Eng.

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“…Analysis with the application of D dimension to the examination of differently machined profiles presented in Figs. [8][9][10][11] shows that the most complex profiles were obtained using carbon nanotube nanofluids with pulse current 5 A, pulse duration 3 µs, pulse voltage 80 V, D = 1.424. On the other hand, the lowest D values were reached after machining with carbon nanotube nanofluids with pulse current 8 A, pulse duration 1 µs, pulse voltage 100 V, D = 0.9106.…”

Section: Fractal Analysismentioning

confidence: 99%

“…The method is called the Power Differentiation method. Kwasny et al [9] presented the structure, texture, thickness, micro-hardness and fractal dimension of surface topography of the two-layer TiC coatings on ASP 30 sintered high-speed steel. The fractal dimension value of surface topography of analyzed coatings was determined using the protective covering method based on investigation results in the atomic force microscope.…”

Section: Introductionmentioning

confidence: 99%

Multiresponse Optimization of Edm Process with Nanofluids Using Topsis Method and Genetic Algorithm

Prabhu¹,

Vinayagam²

2016

Archive of Mechanical Engineering

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Electrical Discharge Machining (EDM) process with copper tool electrode is used to investigate the machining characteristics of AISI D2 tool steel material. The multi-wall carbon nanotube is mixed with dielectric fluids and its end characteristics like surface roughness, fractal dimension and metal removal rate (MRR) are analysed. In this EDM process, regression model is developed to predict surface roughness. The collection of experimental data is by using L9 Orthogonal Array. This study investigates the optimization of EDM machining parameters for AISI D2 Tool steel using Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method. Analysis of variance (ANOVA) and F-test are used to check the validity of the regression model and to determine the significant parameter affecting the surface roughness. Atomic Force Microscope (AFM) is used to capture the machined image at micro size and using spectroscopy software the surface roughness and fractal dimensions are analysed. Later, the parameters are optimized using MINITAB 15 software, and regression equation is compared with the actual measurements of machining process parameters. The developed mathematical model is further coupled with Genetic Algorithm (GA) to determine the optimum conditions leading to the minimum surface roughness value of the workpiece.

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Fractal dimension determined through optical and scanning electron microscopy on FeCrAl alloy after polishing, erosion, and oxidizing processes

Guzmán-Castañeda¹,

Garcı́a-Bórquez²,

Arizabalo-Salas³

2012

Physica Status Solidi (b)

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Optical and scanning electron microscopy (OM and SEM) are techniques that are normally used for 2D-analysis of surface features. By fractal dimension analysis of the gray-scale OM and SEM images, it is possible to get quantitative topographical measurements. In this work, three different surface topographies (polished, eroded, and oxidized) were analyzed on FeCrAl alloy by OM and SEM. Clear surface topographical changes can be qualitatively observed. In order to quantify such changes, two steps were followed: (i) a gray-scale digitalization from each image was used to reproduce topographical features on the analyzed surface, and (ii) from this information, the fractal dimension (D) was determined using fractal3e software. The fractal dimension determined in this form follows coherently the topographical changes produced on the FeCrAl alloy after polishing, erosion, and oxidizing processes. The variations of fractal dimension values against the temperature of the oxidizing processes reflect well the oxide growth changes. Moreover, a minimum D-value is registered at 750 8C, which corresponds to the d-u alumina phase transition temperature as determined by differential thermal analysis (DTA) on the same alloy.

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Structure, physical properties and fractal character of surface topography of the Ti+TiC coatings on sintered high speed steel

Cited by 8 publications

References 13 publications

Fractal dimensional surface analysis of AISI D2 Tool steel material with nanofluids in grinding process using atomic force microscopy

Fractal dimensional surface analysis of AISI D2 Tool steel material with nanofluids in grinding process using atomic force microscopy

Multiresponse Optimization of Edm Process with Nanofluids Using Topsis Method and Genetic Algorithm

Fractal dimension determined through optical and scanning electron microscopy on FeCrAl alloy after polishing, erosion, and oxidizing processes

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