Temat: metallic oxide - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The High Temperature Oxidation Stability of STS434L/Silicon Oxide Compacts
Autorzy:: Park, J. W.
Ko, B. H.
Jung, W. Y.
Park, D. K.
Ahn, I. S.
Powiązania:: https://bibliotekanauki.pl/articles/352481.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: high-temperature oxidation stability
metallic oxide
densification
Opis:: In order to improve the high-temperature oxidation stability, a study of 434L sintered stainless steel was focused on the effect of addition of metallic oxides to form stable oxide film on the inner particle surface. In this paper, oxidation behavior of 434L compacted parts in accordance with the addition of metallic oxides were discussed with high temperature oxidative reaction, and sintering behavior analysis under 950°C. Oxidation weight gains of 434 L have increased as a form of parabolic laws. The hightemperature oxidation resistance was improved by the mixed addition of amorphous SiO₂ and silica up to 2wt.%. The oxidation rate was decreased and kept constant after 60 hours. It was caused by the restraint succeeding oxidation due to the stable oxide formation of Cr₂SiO₄ phases on the particle surface to prevent densification and inhibition the external diffusion of Cr. High-temperature stability was confirmed by the electrical resistivity maintains the constant value of 1.3×10^-2 Ω ·cm when the silica added less than 2w/o to 1w/o A-SiO₂ added 434L.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 1; 307-313
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A Study on the Electrical Characteristics and Oxidation Resistance of the STS434L-High Chrome Powder Green Compact at the High-Temperature
Autorzy:: Park, J. W.
Jung, W. Y.
Park, D. K.
Ahn, I. S.
Powiązania:: https://bibliotekanauki.pl/articles/354543.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: stainless steel
fecraloy
oxidation resistance
metallic oxide
Opis:: Metallic oxide layer of heat resistant element contributes to the high-temperature oxidation resistance by delaying the oxidation, and also has positive effect on the electrical resistivity increase. In this study, the green compacts of Fe-Cr-Al powder mixed with STS434L were oxidized at 950°C up to 210 hrs in order to consider the effect of metal oxide on the oxidation and electrical resistance. It exhibited the low oxidation resistance in case of 434L only, however it increased as the amount of Fe-Cr-Al powder in the 434L compact. The higher electrical resistivity was observed at the Fe-Cr-Al compact with and 434L powder. The metal oxides of (Fe_0.6C_0.4)₂O₃, Cr₂O₃, and Fe₂O₃ contributed to the electrical resistivity, whereas Al₂O₂ took a role of oxidation resistance.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 1; 431-435
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Computer Simulation of the Formation of Non-Metallic Precipitates During a Continuous Casting of Steel
Autorzy:: Kalisz, D.
Żak, P. L.
Tokarski, T.
Wzorek, Ł.
Suchy, J. S.
Kiczor, M.
Cieślak, W.
Powiązania:: https://bibliotekanauki.pl/articles/958226.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: non-metallic oxide precipitates
modelling
continuous casting of steel
crystallization
Opis:: The authors own computer software, based on the Ueshima mathematical model with taking into account the back diffusion, determined from the Wołczyński equation, was developed for simulation calculations. The applied calculation procedure allowed to determine the chemical composition of the non-metallic phase in steel deoxidised by means of Mn, Si and Al, at the given cooling rate. The calculation results were confirmed by the analysis of samples taken from the determined areas of the cast ingot. This indicates that the developed computer software can be applied for designing the steel casting process of the strictly determined chemical composition and for obtaining the required non-metallic precipitates.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 1; 335-340
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Statistical models for predicting aggregate stability from intrinsic soil components
Autorzy:: Bazzoffi, P.
Mbagwu, J.S.C.
Chukwu, W.I.E.
Powiązania:: https://bibliotekanauki.pl/articles/25118.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: carbonate content
metallic oxide
soil property
statistical model
soil component
mineralogical property
aggregate stability
Źródło:: International Agrophysics; 1995, 09, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Review on metallic oxide nanoparticles and their application in optoelectronic devices
Autorzy:: Sosna-Głębska, Aleksandra
Szczecińska, Natalia
Znajdek, Katarzyna
Sibiński, Maciej
Powiązania:: https://bibliotekanauki.pl/articles/105973.pdf
Data publikacji:: 2019
Wydawca:: Centrum Badań i Innowacji Pro-Akademia
Tematy:: metallic oxide
nanoparticles
ZnO
TiO2
Indium-Tin Oxide
ITO
solar cell
tlenek metalu
nanocząstki
tlenek cynku
dwutlenek tytanu
tlenek indowo-cynowy
ogniwo słoneczne
Opis:: Among the large family of metallic oxides, there is a considerable group possessing excellent semiconducting properties. What follows, they are promising materials for applications in the field of optoelectronics and photonics. Thanks to the development of nanotechnology in the last few decades, it is now possible to manufacture a great variety of different nanostructures. By controlling their size, shape, composition and crystallinity, one can influence such properties as band gap, absorption properties, surface to volume ratio, conductivity, and, as a consequence, tune the material for the chosen application. The following article reviews the research conducted in the field of application of the metallic oxide nanoparticles, especially ZnO, TiO₂ and ITO (Indium-Tin Oxide), in such branches of optoelectronics as solid-state lightning, photodetectors, solar-cells and transparent conducting layers.
Źródło:: Acta Innovations; 2019, 30; 5-15
2300-5599
Pojawia się w:: Acta Innovations
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The Effect of the Diameter and Spacing Between Impurities on the Fatigue Strength Coefficient of Structural Steel
Autorzy:: Lipiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/352827.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: steel
structural steel
non-metallic inclusions
oxide impurities
fatigue strength coefficient
bending fatigue
Opis:: The article discusses the effect of the diameter and spacing between impurities (size up to 2 μm) on the fatigue strength coefficient of structural steel during rotary bending. The study was performed on 21 heats produced in an industrial plant. Fourteen heats were produced in 140 ton electric furnaces, and 7 heats were performed in a 100 ton oxygen converter. All heats were desulfurized. Seven heats from electrical furnaces were refined with argon, and heats from the converter were subjected to vacuum circulation degassing. Steel sections with a diameter of 18 mm were hardened for 30 minutes from the austenitizing temperature of 880°C and tempered at a temperature of 200, 300, 400, 500 and 600°C. The experimental variants were compared in view of the applied melting technology and heat treatment options. The results were presented graphically and mathematically to account for the correlations between the fatigue strength coefficient during rotary bending, the diameter of and spacing between submicroscopic impurities. Equations for calculating the fatigue strength coefficient at each tempering temperature and a general equation for all tempering temperatures were proposed. Equations for estimating the fatigue strength coefficient based on the relative volume of submicroscopic non-metallic inclusions were also presented. The relationship between the fatigue strength and hardness of highgrade steel vs. the quotient of the diameter of impurities and the spacing between impurities, and the fatigue strength and hardness of steel vs. the relative volume of submicroscopic non-metallic impurities were determined.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 1; 519-524
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Modeling of Precipitate Oxide and Sulfide Inclusions Formation in Liquid Steel
Autorzy:: Didenchuk, D.
Kalisz, D.
Powiązania:: https://bibliotekanauki.pl/articles/379675.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: yttrium
non-metallic inclusions
oxide
sulfide
FactSage
itr
wtrącenia niemetaliczne
tlenek
siarczek
program FactSage
Opis:: The behaviour of non-metallic inclusions MnO, MnS, FeS, Al₂O₃, SiO₂, Y₂O₃,Y₂S₃ in liquid steel were modelled in commercial software FactSage. It allowed for calculating and designing diagrams of dependence of inclusions formation from the concentration of yttrium in determined limits of aluminium and oxygen. As a result, the influence of the increasing yttrium concentration on the precipitations of oxide and sulfide inclusions is observed. The behavior of precipitation the another analyzed oxides and sulfides is also observed in liquid steel, giving a full composition in non-metallic inclusions, formatted in specified conditions. The amounts of mass fractions of Y₂O₃ and Y₂S₃ are increasing at the growing Y in liquid steel, which shows the active formation of these inclusions.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4 spec.; 19-22
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Physicochemical and mechanical properties of Crofer 22 APU ferritic steel applied in SOFC interconnects
Właściwości fizykochemiczne i mechaniczne stali ferrytycznej Crofer 22 APU na interkonektory ogniw paliwowych SOFC
Autorzy:: Stygar, M.
Kurtyka, P.
Brylewski, T.
Tejchman, W.
Staśko, R.
Powiązania:: https://bibliotekanauki.pl/articles/264094.pdf
Data publikacji:: 2013
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: solid oxide fuel cell
metallic interconnect
mechanical properties
cyclic oxidation
microstructure
ogniwo paliwowe
właściwości mechaniczne
utlenianie
mikrostruktura
Opis:: The paper presents the results of investigations of the physicochemical and mechanical properties of the Crofer 22 APU steel designed for application in metallic interconnects forming the key components of solid oxide fuel cells (SOFCs). Microstructural and hardness studies of non-metallic inclusions and the matrix were carried out. Based on compression tests of raw Crofer 22 APU and the steel after 600 hrs of cyclic oxidation in air at 800°C, the composition of non-metallic inclusions and their influence on the strength properties of the steel were determined.
W pracy przedstawiono wyniki badań właściwości fizyko-chemicznych i mechanicznych stali Crofer 22 APU dedykowanego do zastosowań na interkonektory metaliczne będących kluczowym elementem ogniw paliwowych SOFC. Przeprowadzono badania mikrostruktury oraz twardości wydzieleń niemetalicznych i osnowy. Na podstawie testów ściskania stali wyjściowej oraz stali poddanej cyklicznemu utlenianiu przez 600 h w powietrzu w 800°C określono skład wytrąceń niemetalicznych oraz wykazano ich wpływ na parametry wytrzymałościowe stali.
Źródło:: Metallurgy and Foundry Engineering; 2013, 39, 2; s. 47-57
1230-2325
2300-8377
Pojawia się w:: Metallurgy and Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Bending fatigue strength coefficient the low carbon steel with impurities
Autorzy:: Lipiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/111958.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: bending fatigue
steel
structural steel
non-metallic inclusions
oxide impurities
fatigue strength
stal
stal konstrukcyjna
wtrącenia niemetaliczne
wytrzymałość zmęczeniowa
Opis:: The article discusses the results of a study investigating the effect of the number of fine non-metallic inclusions (up to 2 μm in size) on the fatigue strength of structural steel during rotary bending. The study was performed on 7 heats produced in an industrial plant. Fourteen heats were produced in a 100 ton oxygen converter. All heats were subjected to vacuum circulation degassing. Steel sections with a diameter of 18 mm were hardened and tempered at a temperature of 200, 300, 400, 500 and 600°C. The experimental variants were compared in view of the applied melting technology and heat treatment options. The heat treatments were selected to produce heats with different microstructure of steel, from hard microstructure of tempered martensite, through sorbitol to the ductile microstructure of spheroidite. The results were presented graphically, and the fatigue strength of steel with a varied share of non-metallic inclusions was determined during rotary bending. The results revealed that fatigue strength is determined by the relative volume of fine non-metallic inclusions and tempering temperature.
Źródło:: Production Engineering Archives; 2018, 21; 20-23
2353-5156
2353-7779
Pojawia się w:: Production Engineering Archives
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Analysis of impurity spaces as a percentage volume of non-metallic inclusions
Autorzy:: Lipiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/111916.pdf
Data publikacji:: 2015
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: steel
structural steels
non-metallic inclusions
oxide impurities
fatigue strength
bending fatigue
stal konstrukcyjna
wtrącenia niemetaliczne
zanieczyszczenia tlenkowe
wytrzymałość zmęczeniowa
Opis:: The parameters of high-grade steel are influenced by a combination of factors, including chemical composition and production technology. The impurity content is also a key determinant of the quality of high-grade steel. Non-metallic inclusions are one of the factors that influence the properties, in particular fatigue strength of steel. The physical and chemical reactions that occur in the process of steel melting and solidification produce non-metallic compounds and phases, referred to as inclusions. The quantity of non-metallic inclusions is correlated with the content of dopants in the alloy, while their phase composition and structure, in particular shape, dimensions and dispersion, impurity spaces are determined by the course of metallurgical processes. The experimental material consisted of semi-finished products of medium-carbon structural steel. The production process involved three melting technologies: steel melting in a basic arc furnace with: desulfurization or desulfurization and argon refining and in an oxygen converter and next subjected to vacuum circulation degassing. Billet samples were collected to analyze the content of non-metallic inclusions with the use of an optical microscope and a video inspection microscope. The application of various heat treatment parameters led to the formation of different microstructures responsible for steel hardness values. The objective of this study was to determine the influence of percentage volume non-metallic inclusions on impurity spaces.
Źródło:: Production Engineering Archives; 2015, 9, 4; 10-12
2353-5156
2353-7779
Pojawia się w:: Production Engineering Archives
Dostawca treści:: Biblioteka Nauki

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