Electrochemical Dispersion of Aluminum Alloys in an Aqueous Sodium Hydroxide Solution

Results of experiments on the kinetics of hydrogen generation by electrochemical dispersion of an aluminum alloy D16 in an aqueous solution of sodium hydroxide under alternating (AC) electric current are provided. It was found that the rate of hydrogen evolution under alternating electric current is significantly greater than the rate of hydrogen evolution in a reaction without the application of an electric current. The use of an alternating current produces Al(OH)3 powders with more highly disperse particles. © 2017, Springer Science+Business Media New York

Electrochemical Dispersion of Aluminum Alloys in an Aqueous Sodium Hydroxide Solution

Results of experiments on the kinetics of hydrogen generation by electrochemical dispersion of an aluminum alloy D16 in an aqueous solution of sodium hydroxide under alternating (AC) electric current are provided. It was found that the rate of hydrogen evolution under alternating electric current is significantly greater than the rate of hydrogen evolution in a reaction without the application of an electric current. The use of an alternating current produces Al(OH)3 powders with more highly disperse particles. © 2017, Springer Science+Business Media New York

Surface Machining of Corundum-Ceramic Components by Free Abrasive

© 2020, Allerton Press, Inc. Abstract: The surface machining of corundum-ceramic components by free abrasive is discussed. The influence of the following factors on the final surface roughness is determined: the type of machining (tumbling or vibrational tumbling), the shape of the abrasive bodies, the presence or absence of machining fluid, the machining time, and the drum speed in tumbling. On that basis, recommendations are presented

Sedimentological Analysis of Well Data by the Example of the Dagi Horizon of the Northeastern Shelf of Sakhalin Island

Well logging methods provide important data on data on sedimentary structures, genesis of sedi-ments, and relations of the facies in sedimentary basins. This paper demonstrates the potential of sedimen-tological interpretation when applied to data from the formation microimagers (FMI). The study is based on the results of the joint project on integrated analysis of wellbore images and core samples of the Neo-gene deposits of the northeastern shelf of Sakhalin Island between “Gazprom”, “Gazprom geologora-zvedka”, and Schlumberger Company. The image log represents 300 m of the well section, when 95 m are characterized by the core. The study included detailed matching of the core data with open hole logs as adjusted for core recovery, lithological description of the well section, structural and textural interpreta-tion of the images, facies analysis, orientation of the paleocurrent direction, and reconstruction of the depositional environments