Impact Abrasion Research Articles

Impact Abrasion of Harder by Softer Materials

Fluorite, halite, periclase, and sylvite have been abraded in a wind tunnel by windblown dust from the normal air of the intake room plus or minus introduced silt-sized particles of calcite, barite, or snow. The results indicate that the effective kinetic energy of a projectile and the bond strength of the target-rather than hardness differences, per se-may be fundamental controls of windblast abrasion. It is concluded that, contrary to general belief, some windblast erosion features have probably been produced in response to impact by relatively soft and/or small missiles, such as snow and dust, moving at fairly low wind velocities.

USS AR300 and AR350

Abstract USS AR300 and USS AR350 are economical quenched-and-tempered carbon steels that may be used for applications requiring good resistance to sliding abrasion and impact abrasion. They comprise two grades of steel with about the same nominal composition, differing in hardness and strength largely because of different tempering temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: CS-65. Producer or source: United States Steel Corporation.

Abrasive Impact Wear of Type

Abrasive Impact Wear of Type

Abrasive Impact of Binary Alkali Silicate Glasses

Journal of the American Ceramic SocietyVolume 59, Issue 3-4 p. 173-174 Abrasive Impact of Binary Alkali Silicate Glasses C. R. KENNEDY, C. R. KENNEDY Member, the American Ceramic Society.Search for more papers by this authorR. C. BRADT, R. C. BRADT Member, the American Ceramic Society.Search for more papers by this author C. R. KENNEDY, C. R. KENNEDY Member, the American Ceramic Society.Search for more papers by this authorR. C. BRADT, R. C. BRADT Member, the American Ceramic Society.Search for more papers by this author First published: March 1976 https://doi.org/10.1111/j.1151-2916.1976.tb09465.x Presented in part at the Fall Meeting of the Glass Division of the American Ceramic Society, Pocono Manor, Pa., October 8, 1975 (Paper No. 14-G-75F). Supported by the Applied Research Laboratory of The Pennsylvania State University and by the National Aeronautics and Space Administration under Grant No. 3016. At the time this work was done, the writers were with the Ceramic Science Section, Department of Materials Science, The Pennsylvania State University, University Park, Pa 16802; C. R. Kennedy is now with the Argonne National Laboratory, Argonne, 111. 60439. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume59, Issue3-4March 1976Pages 173-174 RelatedInformation

硫酸-ジカルボン酸電解液によるアルミニウムの硬質陽極酸化

It has been required for long years to produce aluminum coating of abrasion resistant oxide film. However, in the conventional process, abrasion resistant oxide layer was produced only by anodizing in electrolyte at low temperatures, or in the range of -10-0°C. Such process had disadvantages for setting up expensive refrigerating plant in order to maintain the low temperature.This report relates to the hard anodizing of aluminum in the electrolytes of sulfuric acid-dicarboxylic acids, whereby efficiency of the formation of oxide film, and hardness and abrasion resistance of the film were improved.The most excellent results were obtained with the electrolyte containing 15% (by wt.) of sulfuric acid+1-5% (by wt.) of malonic acid. The film produced with the above electrolyte at 20°C had almost so high impact abrasion resistance as that produced with the electrolyte of 15% (by wt.) of sulfuric acid alone at 5°C.The above mixed electrolyte could be operated at temperature of about 10°C higher than the case of sulfuric acid alone and no reduction of abrasion resistance was observed. The results of this study dissolved the problem of disposing of refrigerating plant.

Some Considerations on the Relations Between the Apparent Porosity, Shore's Hardness and Abrasion of Alumina Silica Refractories

For the purpose of finding out the relations between the types of abrasion, i.e. frictional and impact abrasion and some physical properties of alumina silica brick the experiments have been made by rolling test in ball mill and sand blast test. It was confirmed, that (1) the resistance to frictional abrasion increases in proportion to the decrease of apparent porosity, and (2) the resistance to impact abrasion is affected by Shore's hardness and the porosity of the refractory.

Impact Abrasion Hardness of Molded Boron Carbide and of Some Cemented Tungsten and Tantalum Carbides

Impact Abrasion Hardness of Molded Boron Carbide and of Some Cemented Tungsten and Tantalum Carbides