Multifractal Analysis of the Surfaces of Protective (TiAlSiY)N, Me1−xN/CrN and Me1−xN/ZrN Coatings

Kravchenko, Yaroslav; Natalich, B.; Opielak, Marek; Borysiuk, Vadym

doi:10.1007/978-981-13-6133-3_9

Cited by 1 publication

(1 citation statement)

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“…Kravchenko presented the algorithm of multifractal fluctuation analysis and the numerical investigation of microroughness of surfaces of investigated samples were studied. Results show that the surface of (TiAlSiY)N/ CrN coating is the smoothest and the surface of (TiAl-SiY)N is the most non-uniform [29]. Pogrebnjak [28] used two-dimensional multifractal fluctuation method to characterize the topology of the interface under modification and quantitative parameters of the surface structure were obtained.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the mechanical performance of the electroless Ni–W–P coating based on fractal theory

Ren

Cheng

Han

et al. 2019

Surf. Topogr.: Metrol. Prop.

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Engineering surface shows fractal characteristics, and mechanical performance of electroless Ni-W-P coating with fractal parameters can avoid the effects of instrument resolution and sampling length. In the present work, the ternary Ni-W-P coatings were deposited on mild steel (1015) polished with various sandpapers. Surface morphology of coating and mechanical property, including matrix roughness, adhesion strength, friction behavior and elastic modulus were investigated by using scanning electron microscopy (SEM) and MFT-4000 multifunctional material surface performance instrument, respectively. The results present that the mechanical property of the electroless Ni-W-P coating is affected by the fractal features. The stress in the direction of matrix surface is considered to decrease due to the rougher matrix. Meanwhile, the elements are prone to be deposited and the adhesion strength between Ni-W-P coating and matrix is seen to increase. The experiments also indicate that the friction coefficient of coating reduces as the fractal dimension of coating increase. However, the regularity of the relationship between fractal dimension and elastic modulus of Ni-W-P coating is inconspicuous while the elastic modulus is mainly affected by its own chemical component. The work provides evidence that the fractal dimension has a significant influence on the mechanical property of the electroless Ni-W-P coating. Nomenclature V deposition rate [mg mm −2 h −1 ]RECEIVED

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Section: Introductionmentioning

confidence: 99%