24 research outputs found

    Effect of tensile deformation on austenitic Cr-Ni-steel structure and magnetic properties

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    Deformation metastability of chromium-nickel steels of austenitic and austenitic-ferritic classes is studied directly during specimen extension in a magnetic measurement facility. Structural changes and their correlation with steel magnetic properties are analyzed. © 2013 Springer Science+Business Media New York

    Pore formation of phospholipid membranes by the action of two hemolytic arachnid peptides of different size

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    AbstractPin2 and Oxki1 are cationic amphipathic peptides that permeate lipid membranes through formation of pores. Their mechanism of binding to phosphocholine (PC) membranes differs. Spin-probe experiments showed that both Pin2 and Oxki1 penetrate the lipid membrane of small unilamellar vesicles (SUVs). Moreover, the leakage of calcein and dextrans from PC vesicles showed that Pin2 agrees with the accumulation of peptides on lipid membranes and form pores of different size. On the other hand, Oxki1 did not act strictly cooperatively and form pores of limited size

    METHOD AND COMPOSITION FOR BOROCHROME PLATING OF STEEL PRODUCTS IN FLUIDIZED BED

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    FIELD: thermochemical treatment. SUBSTANCE: method includes boronizing of steel products in mixture containing boron carbide and corundum at temperature of 650- 1000 C for 10-90 min, and chrome plating in mixture containing chrome and corundum at 900-950 C for 20-90 min. Composition for boronizing of steel products contains the following components, wt.%: boron carbide 10-20; ammonium chloride 0.01-0.1; sodium tetrafluoroborate 0.02-0.05; the balance, corundum. Composition for chrome plating of steel products contains, wt. %: chrome 1-10; ammonium chloride 0.01-01; the balance, corundum. EFFECT: obtained quality diffusion layers with high microhardness and corrosion resistance, saved components of saturated mixture, and reduced time of process duration.Изобретение относится к химико-термической обработке. Способ борохромирования стальных изделий в псевдоожиженном слое включает борирование в смеси, содержащей карбид бора и корунд, при 650 - 1000oC в течение 10 - 90 мин и хромирование в смеси, содержащей хром и корунд, при 900 - 950oC в течение 20 - 90 мин. Состав для борирования стальных изделий содержит следующие компоненты, мас. %: карбид бора 10 - 20, хлористый аммоний 0,01 - 0,1, тетрафторборат натрия 0,02 - 0,05, корунд - остальное. Состав для хромирования стальных изделий содержит, мас.%: хром 1 - 10, хлористый аммоний 0,01 - 0,1, корунд - остальное. Технический эффект заключается в получении диффузионных слоев хорошего качества с высокой микротвердостью и коррозионной стойкостью, а также в экономии компонентов насыщенной смеси и сокращении времени процесса
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