Topic
Surface finishing
About: Surface finishing is a research topic. Over the lifetime, 2771 publications have been published within this topic receiving 25916 citations. The topic is also known as: surface treatment.
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TL;DR: In this paper, a new mathematical model is developed to include the presence of particles on top surfaces, in addition to the stair step effect, for the accurate prediction of surface roughness.
641 citations
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TL;DR: The effect of surface microstructure on the response of thickness-shear mode resonators in contact with liquids has been examined in this paper, where surface roughness, contacting liquid properties, device operating frequency, and liquid contact angle were varied.
Abstract: The effect of surface microstructure on the response of thickness-shear mode resonators in contact with liquids has been examined. Resonators were fabricated with different degrees of random surface roughness by polishing AT-cut quartz crystals with various abrasive particle sizes and then depositing conformal Cr/Au electrodes. The electrical response of liquid-contacted resonators was measured over a range of frequencies near resonance and fit to an equivalent-circuit model. A method is described for determining the complex shear mechanical impedance (the ratio of shear stress to particle velocity at the solid/liquid interface) from the equivalent-circuit elements. This impedance is sensitive to the influence of surface microstructure on the solid/liquid interaction. The surface mechanical impedance was measured while surface roughness, contacting liquid properties, device operating frequency, and liquid contact angle were varied. Results show that, for roughness features much less than the liquid decay length, the surface may be considered hydrodynamically smooth and the responses depend only on the density-viscosity product. As features become comparable to or larger than the decay length, new mechanisms, including liquid trapping and compressional wave generation, arise for energy storage and power dissipation. 53 refs., 14 figs., 3 tabs.
334 citations
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TL;DR: In this article, the chemical, mechanical and tribological properties of the diamond-like carbon (DLC) coatings are discussed and a review of recent developments in the chemical and mechanical characterization of the ultra-thin coatings is presented.
316 citations
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TL;DR: In this paper, the principles and applications of the PEO coating process are considered, including the fundamentals of oxide deposition, the technology involved and the typical characteristics of the coatings.
Abstract: The introduction of plasma electrolytic oxidation (PEO) as a surface finishing technique has enabled a range of hard, dense oxide coatings to be produced on aluminium, magnesium, titanium and other lightweight alloy substrates. As with all surface coating technologies, successful development of PEO coatings requires adequate attention to substrate pretreatment together with careful control of electrolyte conditions and process variables. The principles and applications of the PEO coating process are considered, including the fundamentals of oxide deposition, the technology involved and the typical characteristics of the coatings. Industrial applications are considered together with their coating requirements. Plasma electrolytic oxidation coating is a specialised but well developed process. Suitable control of electrolyte and process conditions can realise a novel range of coatings having technologically attractive physical and chemical properties. The development of PEO technology over the last decade has provided coatings having controlled appearance, hardness, corrosion resistance and other tribological properties across an extending range of industrial sectors. Continuing developments are concisely reviewed and the PEO process is illustrated by the characterisation of anodised coatings on an AZ91 magnesium alloy surface.
267 citations
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TL;DR: In this paper, multiple linear regression models and neural network models are developed for predicting surface roughness and tool flank wear in finish turning of AISI D2 steels using ceramic wiper (multi-radii) design inserts.
236 citations