نتایج جستجو برای: electropolishing

تعداد نتایج: 237  

Journal: :Physical chemistry chemical physics : PCCP 2015
Maryana I Nave Yu-chen Karen Chen-Wiegart Jun Wang Konstantin G Kornev

Electropolishing of metals often leads to supersaturation conditions resulting in precipitation of complex compounds. The solubility diagrams and Gibbs adsorption isotherms of the electropolishing products are thus very important to understand the thermodynamic mechanism of precipitation of reaction products. Electropolishing of tungsten wires in aqueous solutions of potassium hydroxide is used...

2005

This investigation was conducted to ascertain the benefits of electropolishing after mechanical polishing for electron backscattered diffraction of a Ti 2 AlNb intermetallic Ti − 21Al − 29Nb (at.%) alloy containing the orthorhombic (O) and body-centered-cubic (BCC) phases. Electropolishing was performed at − 40 ° C in 6% H 2 SO 4 methanol solution. Atomic force microscopy was used to measure th...

Journal: :IBM Journal of Research and Development 2005
Alan C. West Hariklia Deligianni Panayotis C. Andricacos

Studies of the electropolishing of copper are reviewed. Recent work intended to demonstrate the electrochemical planarization of the overburden in electroplated copper interconnect metallization is emphasized. Furthermore, two common reaction mechanisms invoked to explain the mass-transfer limitation required to achieve electropolishing are outlined and discussed within the context of anodic le...

2004
Weidong Guo Duane T. Johnson

In our previous work, we have studied the pattern formation during the electropolishing of both isotropic and anisotropic materials. Both models predict stable hexagonal and striped patterns and are in qualitative agreement with experiments. In this paper, we study the smallscale pattern size control during electropolishing. Our study shows that applied voltage, surface diffusion and surface de...

Journal: :Journal of clinical orthodontics : JCO 2003
Claude G Matasa

housands of orthodontic practitioners around the world currently recycle brackets, tubes, and bands. Nearly all recyclers, whether commercial companies or private clinicians, use heat and electropolishing. Heat is necessary not only to decontaminate and sterilize orthodontic attachments, but also to remove the adhesive's polymeric matrix. Heating stainless steel to between 350° and 800°C (650-1...

2017
Ching An Huang Jhih You Chen Ming Tsung Sun

The electropolishing behaviour of 73 brass was studied by means of a rotating cylinder electrode (RCE) in a 70 vol % H3PO4 solution at 27 ◦C. Owing to the formation of a blue Cu2+-rich layer on the brass-RCE, an obvious transition peak was detected from kineticto diffusion-controlled dissolution in the anodic polarisation curve. Electropolishing was conducted at the potentials located at the tr...

Journal: :Journal of endodontics 2007
Margot E Anderson John W H Price Peter Parashos

The purpose of this study was to investigate the effect of electropolishing on cyclic flexural fatigue and torsional strength of rotary nickel-titanium endodontic instruments. Electropolished and nonelectropolished ISO size 30 (0.04 taper) EndoWave (J Morita Corporation, Osaka, Japan), ProFile (Dentsply Maillefer, Ballaigues, Switzerland), and RaCe (FKG, La-Chaux De Fonds, Switzerland) instrume...

In this study, titanium oxide nanotubes anodized on threedifferent surface morphologies of titanium foils, were investigated. AFM imagesis used to show different surface roughness of these foils. Nanotubes wereanodized on titanium foils with 1) no polishing process (A sample), 2)electropolishing process (B sample) and 3) electropolishing process in ethanolicelectrolyte (C sample). To study the ...

Journal: :Journal of the Japan Society of Precision Engineering 1970

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