Electrodeposited coatings evaluation

A more economical method of making hf structures involves electrochemical deposition from molten salts of a thick niobium layer of a sufficiently high mechanical strength onto a matrix reproducing the inner surface of the article followed by removing the matrix [2,3]. The aim of this work is investigation of physico-mechanical characteristics of niobium coatings obtained by electrodeposition to evaluate the hf superconductivity of the articles which can be made on their basis. 

In-Situ Imaging and Nondestructive Evaluation of Electrodeposited Coatings... 

Ottova et al. looked at two-compartment semiconductor-septum electrochemical photovoltaic cells with cadmium selenide and cadmium selenide telluride for water photolysis [126], They used cells consisting of two chambers separated by a CdSe or CdSe/CdTe bipolar electrode. The bipolar electrodes were prepared by painting a CdSe slurry on a metal substrate or by ultrasound-aided electrodeposition from CdSe solution in ZnCl2. The photoresponse (voltage and current output) and hydrogen yield from photo-induced electrolysis of H20 in the dark chamber of the cell were evaluated as a function of CdSe preparation method. The ultrasound-aided deposition technique gave excellent coatings of CdSe. 

Electrodeposited chitosan-CaP hybrid coatings were evaluated in vitro for the ability to support proliferation and differentiation of osteoblastic cells [146]. Deposited hybrid coatings were prepared using electrolyte solutions containing 0.1 and... 

EIS is commonly employed for the evaluation of coatings. Poor resistance values of electrodeposited PPy coatings have been demonstrated to be good predictors of long-term coating performance in corrosion prevention [24]. 

Apart from polyaniline, other condncting polymers that are being studied for electrolytic expansion include polypyrrole [11, 15-17], poly(alkylthiophene) [26] and carbon nanotubes [5]. For example, electrochemically prepared polypyrrole films were used to study the qualitative movement of electrolytic expansion by fabricating a bimorph actuator. The movement of bending and stretching of the actuator was demonstrated in electrolyte solution [15]. Actuators fabricated by electrodeposition on gold-coated polyethylene films were studied [11] for the evaluation of expansion ratio and response time. Also, a microactuator of several tens of microns made from two layers of gold and... 

Vaezi M, Sadmezhaad S, Nikzad L. Electrodeposition of Ni-SiC nano-composite coatings and evaluation of wear and corrosion resistance and electroplating characteristics. Colloids Surf A Physicochem Eng Asp 2008 315 176-82. 

EVALUATION OF HIGH-FREQUENCY SUPERCONDUCTIVITY OF NIOBIUM COATINGS PREPARED BY ELECTRODEPOSITION IN MOLTEN SALTS... 

Kolosov, V.N. and Matychenko, E.S. (1998) Evaluation of high-frequency superconductivity of niobium coatings prepared by electrodeposition in molten salts. This coriference, proceeding paper. 

To evaluate the quality of the electrochemical coatings obtained from choline chloride based ionic liquids, constant current electrolyses were carried out under stationary conditions and in open air (the electrolyte has been in contact with atmospheric air and humidity). Different ionic liquids systems have been involved, as shown in Table 3. A two-electrode configuration has been employed, using various metallic substrates, respectively of Cu, A1 and Mg as metallic substrates, of 70x35 mm sizes, with a constant geometrical area of 24.5 cm2. Table 4 briefly presents the surface preparation of the metallic electrode before electrodeposition, as well as the electrolysis conditions. 

Saitou, M., K. Sakae, and W. Oshikawa, Evaluation of crystalline germanium thin fdms electrodeposited on copper substrates from propylene glycol electrolyte. Surf Coat. Technol, 2003. 162 p. 101-105. 

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