Study of the Effect of Feldspar Replacement from a Mixture of Glass / Syenite in Technological Properties of Ceramic Coatings

2014 ◽  
Vol 798-799 ◽  
pp. 294-299 ◽  
Author(s):  
José Elson Soares Filho ◽  
Alan de Oliveira Feitosa ◽  
Leonardo Leandro dos Santos ◽  
Liszandra Fernanda Araújo Campos ◽  
Ricardo Peixoto Suassuna Dutra
Keyword(s):  
Ceramic Coating ◽  
Raw Materials ◽  
Ceramic Coatings ◽  
Standard Formulation ◽  
Technological Properties ◽  
Ceramic Tiles ◽  
Recycled Glass ◽  
Different Temperatures ◽  
Formed Product ◽  
Melting Material

Obtaining new raw materials for the production of ceramic coating is increasingly highlighted, however, it is desirable to maintain or improve the technological properties of the formed product. Thinking about it, and aiming at the environmental context, the aim of this work is to study the mixing recycled glass effect with syenite, an alternative melting often used in the production of ceramic tiles, in replacing to feldspar. The raw materials were characterized and subsequently the technological properties were determined for the standard formulation and the formulations with 5, 10, 15 and 20% mixing glass / syenite, in replacing to feldspar. The test bodies were prepared by wet, and sintered at different temperatures, with a rate of 30 °C /min and a level of 20 minutes. The results indicate that the mixing glass / syenite has the potential to be used as melting material in the composition of the ceramic mass.

Quality Technological Properties of Foundry Exhaust Dust as Alternative Ceramic Coating Raw Materials

2015 ◽  
Vol 1088 ◽  
pp. 395-398
Author(s):  
Luiz Oliveira Veriano dalla Valentina ◽  
Marilena Valadares Folgueras ◽  
Wanessa Rejane Knop ◽  
Maria Cristina Pacheco do Nascimento ◽  
Glaucia Aparecida Prates
Keyword(s):  
Water Absorption ◽  
Bulk Density ◽  
Ceramic Coating ◽  
Raw Materials ◽  
Linear Shrinkage ◽  
Inert Atmosphere ◽  
Technological Properties ◽  
Foundry Industry ◽  
Ceramic Manufacturing ◽  
Materials Used

The work evaluates the possibility of the use the exhauster powder generated in the foundry process in ceramic mass atomized semigre type. The raw materials used were semi-stoneware kind atomized powder used on the coating ceramic manufacturing and dust exhaust byproduct supplied by a foundry industry both from brazilian industries . Tests were conducted using a heating rate of 10o.C / min and oxidant and / or inert atmosphere. Specimens contained different amounts of byproduct to the extent of 30% by mass, in order to verify the maximum addition of byproduct and were used in order to analyze the technological properties evaluation (water absorption linear shrinkage, bulk density). at the temperature of 1100 ° C showed higher difference between the results obtained and 1200o C this difference decreased.

Strengthening Mechanism of Al2O3 Ceramic-Lined Composite Steel Pipe Prepared by the SHS Gravitational Separation Process

2018 ◽  
Vol 916 ◽  
pp. 79-84
Author(s):  
Xing Hui Hou ◽  
Jing Kun Yu
Keyword(s):  
Phase Composition ◽  
Ceramic Coating ◽  
Raw Materials ◽  
Reaction System ◽  
Strengthening Mechanism ◽  
Ceramic Coatings ◽  
Separation Process ◽  
Steel Pipe ◽  
Element Contents ◽  
Composite Steel

The Al2O3ceramic-lined composite steel pipes were produced by the SHS gravitational separation process (SHS-GS process) from Al, Fe2O3and Cr2O3as the raw materials within different reaction systems. The phase, composition, micro-structure and properties of ceramic coatings were investigated to discuss the strengthening mechanism of the composite steel pipe. The results showed that the phase composition of Al-Fe2O3-Cr2O3reaction system could be Al2O3and Fe-Cr alloy compared with the Al2O3-Fe-FeAl2O4phases of Al-Fe2O3reaction system, which led to the increase of strength and hardness of ceramic coating. Because the Fe-Cr alloy was formed instead of Fe element, and the addition of Cr2O3reduced the production of erodible FeAl2O4. The transition structure consisted of ceramic coating-transition layer-steel pipe was formed, and in its direction the Al and O element contents decreased, the metallic Fe and Cr increased. Therefore, the transitional changes of all the element contents could decrease the stress difference between the layers, and increase the bonding strength of the composite steel pipe.

Analysis of Color of the Ceramic Coatings Submitted to Different Processing Conditions

2014 ◽  
Vol 798-799 ◽  
pp. 306-311
Author(s):  
Alan de Oliveira Feitosa ◽  
José Elson Soares Filho ◽  
Leonardo Leandro dos Santos ◽  
Romualdo Rodrigues Menezes ◽  
Ricardo Peixoto Suassuna Dutra
Keyword(s):  
Raw Materials ◽  
Ceramic Coatings ◽  
Color Variation ◽  
Raw Material ◽  
Processing Conditions ◽  
Standard Formulation ◽  
Relevant Factor

Color is a very important characteristic in ceramic products. In ceramic coatings, the basis of ceramic is normally classified as red or white basis. Another relevant factor for color variation is the processing to which the material is submitted. In this sense, this work aims to analyze and quantify the color of ceramic pieces used as coatings, which were developed from a formulation of masses, using raw materials such as clay, feldspar, kaolin and quartz. Each raw material was analyzed separately and then a standard formulation was made, involving all of them, and these ones were submitted to different processing temperatures. All the samples were quantified regarding the color, by using the tridimensional colorimetric space by CIELAB method. Results point out that each raw material has an own value regarding color and the temperature has contributed directly to the color variation of the ceramic pieces.

scholarly journals Availability of raw materials in the state of Piauí for the production of ceramic coating

2021 ◽  
Vol 9 (4) ◽  
pp. 110-119
Author(s):  
Paulysendra Felipe Silva ◽  
Francisca das Chagas Oliveira ◽  
Rebeka Manuela Lobo Sousa ◽  
Phillype Dowglas Lopes ◽  
Italo Gutierry Carneiro da Conceição ◽  
...  
Keyword(s):  
Ceramic Coating ◽  
Raw Materials ◽  
Ceramic Materials ◽  
The State ◽  
Raw Material ◽  
Mechanical Resistance ◽  
Ceramic Tiles ◽  
Simple Processing ◽  
Materials Used ◽  
Plastic Clays

The main raw material for the production of ceramic materials is clay, it can be found in large quantities throughout Brazil, in addition to having a simple processing method in the preparation of the mass of ceramic tiles using mixtures of kaolinitic clays (not very plastic) and illitic (plastic) clays, this mixture favors by developing a series of functions such as: light-burning color; act as binders and plasticizers; facilitate fluidity, due to its melting properties, provide a good burning density and excellent mechanical resistance. This work addresses the main basic white-burning raw materials used in the production of ceramic tiles: quartz, kaolin, talc and limestone and their influence on the ceramic mass. All raw materials mentioned are available in the State of Piauí. For this, a bibliographic review of a descriptive, basic and qualitative nature was carried out on the theme and with the results, it was possible to identify the existence of white-burning raw materials in the State of Piauí that can be used in the production of ceramic coating.

Characterization of thermal barrier coatings formed by electon-beam physical vapor deposition (EB-PVD)

1989 ◽  
Vol 47 ◽  
pp. 426-427
Author(s):  
Ozer Unal
Keyword(s):  
Thermal Barrier Coatings ◽  
Physical Vapor Deposition ◽  
Ceramic Coating ◽  
High Vacuum ◽  
Ceramic Coatings ◽  
High Energy ◽  
Thermal Barrier ◽  
Protective Oxide ◽  
Barrier Coatings ◽  
Energy Beam

Interest in ceramics as thermal barrier coatings for hot components of turbine engines has increased rapidly over the last decade. The primary reason for this is the significant reduction in heat load and increased chemical inertness against corrosive species with the ceramic coating materials. Among other candidates, partially-stabilized zirconia is the focus of attention mainly because ot its low thermal conductivity and high thermal expansion coefficient.The coatings were made by Garrett Turbine Engine Company. Ni-base super-alloy was used as the substrate and later a bond-coating with high Al activity was formed over it. The ceramic coatings, with a thickness of about 50 μm, were formed by EB-PVD in a high-vacuum chamber by heating the target material (ZrO2-20 w/0 Y2O3) above its evaporation temperaturef >3500 °C) with a high-energy beam and condensing the resulting vapor onto a rotating heated substrate. A heat treatment in an oxidizing environment was performed later on to form a protective oxide layer to improve the adhesion between the ceramic coating and substrate. Bulk samples were studied by utilizing a Scintag diffractometer and a JEOL JXA-840 SEM; examinations of cross-sectional thin-films of the interface region were performed in a Philips CM 30 TEM operating at 300 kV and for chemical analysis a KEVEX X-ray spectrometer (EDS) was used.

scholarly journals Rheological and Microbiological Characteristics of Hops and Hot Trub Particles Formed during Beer Production

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 681
Author(s):  
Monika Sterczyńska ◽  
Marek Zdaniewicz ◽  
Katarzyna Wolny-Koładka
Keyword(s):  
Rheological Properties ◽  
Raw Materials ◽  
Raw Material ◽  
Microbiological Analysis ◽  
Waste Products ◽  
Low Viscosity ◽  
Post Process ◽  
High Shear Rates ◽  
Different Temperatures ◽  
Beer Production

During the production of beer, and especially beer wort, the main wastes are spent grain and hot trub, i.e., the so-called “hot break.” Combined with yeast after fermentation, they represent the most valuable wastes. Hot trub is also one of the most valuable by-products. Studies on the chemical composition of these sediments and their rheological properties as waste products will contribute to their effective disposal and even further use as valuable pharmaceutical and cosmetic raw materials. So far, hot trub has been studied for morphology and particle distribution depending on the raw material composition and beer wort extract. However, there are no preliminary studies on the rheological properties of hot trub and hops. In particular, no attention has yet been paid to the dependence of these properties on the hop variety or different protein sources used. The aim of this study was to examine the effect of different hopping methods on hot trub viscosity and beer wort physicochemical parameters. Additionally, the hop solutions were measured at different temperatures. A microbiological analysis of hop sediments was also performed to determine the post-process survival of selected microorganisms in these wastes. For manufacturers of pumps used in the brewing industry, the most convenient material is that of the lowest viscosity. Low viscosity hot trub can be removed at lower velocities, which reduces costs and simplifies washing and transport. The sediments also had similar equilibrium viscosity values at high shear rates.

Radiological, structural and chemical characterization of raw materials and ceramic tiles in Serbia

2019 ◽  
Vol 323 (2) ◽  
pp. 861-874
Author(s):  
Predrag Kuzmanović ◽  
Nataša Todorović ◽  
Jovana Nikolov ◽  
Jovana Knežević ◽  
Bojan Miljević
Keyword(s):  
Raw Materials ◽  
Chemical Characterization ◽  
Ceramic Tiles

Synthesis of Polyurethane Dendrimers and Transfer Properties of Dye

2013 ◽  
Vol 457-458 ◽  
pp. 65-71
Author(s):  
Jing Ru Jia
Keyword(s):  
Methyl Orange ◽  
Phase Transfer ◽  
Raw Materials ◽  
Toluene Diisocyanate ◽  
Polymerization Process ◽  
Process Conditions ◽  
Addition Polymerization ◽  
Different Temperatures ◽  
The Difference ◽  
Transfer Properties

The polyfunctional organic compounds 2- hydroxymethyl -1,4- butanediol (trihydric alcohol) and toluene diisocyanate -2, 4- diisocyanate (TDI) were taken as the raw materials in this study. A polyurethane dendrimer was synthesized by utilizing the difference in the reaction activity of two isocyanate groups of TDI at different temperatures. The polymerization process conditions were studied. The addition polymerization of para-position NCO groups occurred at 50 °C, and that of ortho NCO groups occurred at 90 °C. According to the structure of the dendrimer synthesized, methyl orange was used as the guest molecule. Consequently, the aqueous methyl orange showed a phase transfer. With the increase of dendrimer concentration, the transfer rate of methyl orange increased.

Variable Parameter Processes of Micro-Arc Oxidation for Aluminium Alloy

2011 ◽  
Vol 704-705 ◽  
pp. 1273-1278
Author(s):  
Cheng Gao ◽  
Jin Yong Xu ◽  
Xuan Yi Shi ◽  
Ya Juan Liu ◽  
Jing Chun Zhang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Wear Rate ◽  
Ceramic Coating ◽  
Early Stage ◽  
Variable Parameter ◽  
Ceramic Coatings ◽  
Constant Current ◽  
Constant Voltage ◽  
Micro Arc Oxidation ◽  
The Way

In micro-arc oxidation process, ceramic coating had a rapid growth all along by the way of constant current oxidation, and ceramic coating had a low roughness by the way of constant voltage oxidation. But few research focus on the mixed control process of constant current oxidation and constant voltage oxidation. In this paper we propose a variable parameter process that can combine the advantages of constant current and constant voltage oxidation for the first time. The growth kinetics of different technics was analyzed according to the change law of current and voltage. Surface topographs of ceramic coating were observed using scanning electron microscopy (SEM). The friction tests were carried out using a self-made friction tester. The results show that ceramic coating has an upper growth rate and a low roughness by the process of constant current+constant voltage oxidation. The ceramic coating has a high growth rate by process of constant voltage+constant current oxidation. The results of friction test indicate that the wear rate and roughness of ceramic coating are positive correlation at early stage of friction. While the ceramic coatings treated by different technics have the close wear rate at stable friction stage, which embodies the inner layer of ceramic coating has a well antiwear behavior.

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