Materials Literature
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Provides a method of hardening the surface layers of the integrated steel 18CrM nTi by getting it differentiated phase-structural states w ith different am ounts of content and the degree of residual austenite m etastability It is established that, depending on the tem perature o f the plasm a im pact the hardness o f…
Researches of humidity of wood and polymeric composites on the basis of a waste ofpolypropylene and an organic waste and its influence on technical characteristics on samples arecarried out.
The problem of experimental study of the reaction of rigid plates on a bird strike by dynamic broadband strain measurement are considered in work. Data of experimental researches of influence of kinematical factors on response of a deformable plate-target at collision with a bird are presented. A series of experiments…
ABSTRACT The present work is a theoretical study of the direct contact condensation process of saturated vapor on fully developed subcooled laminar liquid film flowing over thin liquid film on adiabatic and the inclined solid surface .A theoretical model based on momentum , continuity and energy equations . heat balan…
Article deals with the installation of roofs made of lightweight metal. Method of mounting large-block constructions production facilities is especially important for large-scale construction on the area, volume and weight of the industrial facilities. From finding the rational design and technological solutions assem…
All our efforts to demonstrate a multifunctional device – photovoltaic gas sensor (i.e. solar cell which show photovoltaic action depending on the gas / volatile organic compounds (VOC) in the surrounding atmosphere) yielded negative results. Photovoltaic performance of the organic solar cells under study degraded – a…
Determined phase composition and mechanism of phase transformations in alloys of the Fe-B-C. It is shown that doping with boron alloy affects the temperature austenizet.
Розглянуто спосіб використання цифрового фотоапарату при проведенні процедури активного теплового контролю металів, який може знайти застосування в енергетиці, машинобудуванні, чорній і кольоровий металургії при ідентифікації поверхневих та внутрішніх дефектів металургійних виробів, зокрема виробів, виготовлених метод…
Phosphate melts are commonly used like growth mediums for monocrystals, which are used in laser optics. The molten halogenides addition to phosphate melts(first of all fluorides of alkali metals) appreciably reduces the viscosity of the system and leads to solubility value changes of polyvalent metal oxides. But at hi…
Choice of strong, reliable and lasting material for making of cutting instrument. Steel, applied for making of cutting instrument must have a high complex of mechanical properties, but not high value any one property. Meaningfulness of carbidic phases is in the change of structure of alloy of T15K6 and defects of stru…
The article examines the influence of mechanical vibrations on the distribution of alloying elements in Hadfield steel. Shown steel according structuring the frequency of oscillation of the melt during solidification.
Hydrated dihydrogenphosphates of manganese(ІІ) and products of their dehydration are widely used as the basis of various inorganic materials: catalysts of organic synthesis, thermophosphoric decorative coatings, corrosion inhibitors and others. Thermal properties of manganese(ІІ) dihydrogenphosphate tetrahydrate - Mn(…
Results of high temperature friction tests of Cr2O3, TiO2, ZrO2 gas-thermal oxide coatings was presented in this work. Coatings was obtained by plasma spraying method. Tribotechnical properties of oxides was investigated by «pin-on-disc» scheme under T = 500 °C. These investigations showed that chromium oxide possess…
The study includes histological structure of digestive tract of Liza abu , Anatomical results found that the digestive tract occupied the largest part of abdominal cavity , the mean gut length was (45.5) cm and relative gut length was (2.9) . esophagus was a muscular tube length (1.5) cm , esophagus wall containing lo…
Penelitian ini bertujuan untuk mengetahui pengaruh waktu pengelasan terhadap kekuatan tarik dan struktur mikro las SMAW dengan menggunakan elektroda E6013. Penelitian ini menggunakan baja SS400 yang mengandung kadar C = 0,20 %, Si = 0,09 %, Mn = 0,53 %, S = 0,04 %, P = 0,01 %, Ni = 0,03 %, Cr = 0,03%, Fe = Balance. Ba…
The paper presents the results of modeling of semi-trailers random vibrations of driving on dif-ferent type of roads. Damage to the tank capable appears during operation due to the accumulation and development of fatigue or corrosion, which leads to cracks and depressurization boiler tank. Therefore, development of me…
Метою дослідження є вивчення в експерименті на білих безпородних щурах зрілого віку морфофункціональних особливостей будови щитоподібної залози за умов дегідратаційних порушень водно-сольового обміну. При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/35719
Interrelation of strength, ductility and mechanical stability of structural titanium alloys is considered. It is ascertained that equation relating ductility () and strength () at the constant mechanical stability are parabolic by their behavior. They may be separated by the kind of their critical points – dependences…
The influence of particle size distribution of exothermic mixtures of silica filler on the basis of their turnover has been studied. The optimization of particle size distribution of mixtures will reduce the dropout process step fine fraction 0.2 - 0 mm, which greatly simplifies and reduces the cost of technology. The…
In this paper a numerical-analytical study on a stress-strain state of a steel pipeline section with a repair fiberglass viscoelastic layer is described. The layer is considered long enough that allows to solve the problem in a flat axisymmetric statement. A mathematical model of viscoelastic behavior of a fiber-glass…