scholarly journals EXPERIMENTATION COLOUR OF GLAZE USING A VARIOUS STONE IN SABAH

2021 ◽  
Vol 3 (7) ◽  
pp. 01-15
Author(s):  
Nor Asmidayu Mohamad Fauzi ◽  
Ismail Ibrahim ◽  
Sazmal Effendi Arshad
Keyword(s):  
Production Process ◽  
High Temperatures ◽  
High Resistance ◽  
Ceramic Industry ◽  
Temperature Reaction ◽  
Ceramic Product ◽  
Natural Materials ◽  
Ceramic Glaze ◽  
Material Type ◽  
Art Objects

Ceramics are the oldest art objects ever produced by humans since prehistoric times. Ceramics are made from clay and will change character when exposed to high temperatures above 1200 degrees celsius. Ceramic product is covered with a layer of glass which is a glaze and has a high resistance to temperature or heat. This research aims to document the production of glaze color systematically using various types of stone in Sabah such as Sungai Moyog stone, Lombong Mamut stone, and stone in Sports Complex, Ranau on the surface of the specimen body produced using by kaolin. In addition, this research also aims to identify the response of experimental samples using a mixture of different percentages using the formula Triaxial Line Blend on the surface of kaolin involving aspects of the material, type of combustion, and decoration techniques. The production of glaze color using natural materials which is a Sungai Moyog stone, Lombong Mamut stone, and Sports Complex stone found around Ranau and Kota Kinabalu, Sabah is an innovation in the production of color sourced from natural materials as well as efforts to develop the ceramic industry in Malaysia. It is more to the production of natural materials that have undergone the production process to produce a new glaze color. Preliminary studies using samples from color agents which are Sungai Moyog stone, Lombong Mamut stone, and Ranau Sports Complex stone were conducted experimentally. The research includes the preparation and formulation of glaze using the material until it successfully produces color pigments according to the temperature reaction and the type of combustion that has been implemented. This research also aims to study the suitability of glaze color on the surface of ceramic products such as kaolin. In conclusion, through this research, we will better understand the processes and ways how to produce glaze color in the ceramic industry by using natural materials found in the environment. Through this research as well, it is possible to identify the minerals present in the experimental materials that influence the reaction in the production of ceramic glaze color.

Recrystallisation Resistance of Extruded and Cold Rolled Aluminium Alloys with Additions of Hf, Sc and Zr

2006 ◽  
Vol 519-521 ◽  
pp. 525-530 ◽  
Author(s):  
Håkon Hallem ◽  
W.J. Rittel ◽  
Børge Forbord ◽  
Knut Marthinsen
Keyword(s):  
Cold Rolling ◽  
Structural Stability ◽  
High Temperatures ◽  
High Resistance ◽  
Aluminium Alloys ◽  
Cold Rolled

A high recrystallisation resistance is required in aluminium alloys intended for processing or use at temperatures between 450°C-600°C. Additions of Hf, Sc and Zr significantly improve the resistance to recrystallisation through the formation of Al3X-dispersoids (X=Hf,Sc,Zr), and in this work different concentrations and combinations of these elements were added to five aluminium alloys. The alloys were extruded, subjected to various degrees of cold rolling (0%-80%) and finally annealed at high temperatures in order to study the structural stability. All variants displayed a high resistance towards recrystallisation, but the best results were obtained in the alloy containing only Sc and Zr. In this alloy no signs of recrystallisation were observed even after 1 hour annealing of extruded and 80% cold rolled profiles at 600°C.

A novel production process for optically pure l -lactic acid from kitchen refuse using a bacterial consortium at high temperatures

2013 ◽  
Vol 146 ◽  
pp. 672-681 ◽  
Author(s):  
Yukihiro Tashiro ◽  
Hiroko Matsumoto ◽  
Hirokuni Miyamoto ◽  
Yuki Okugawa ◽  
Poudel Pramod ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Production Process ◽  
High Temperatures ◽  
Bacterial Consortium ◽  
Optically Pure

scholarly journals Laminasyon Tekniği İle Üretilen Sim İpliklerden Örülen Kumaşların Tekstil Terbiye İşlemlerine Karşı Dayanımının İncelenmesi

2020 ◽  
Vol 27 (120) ◽  
pp. 260-270
Author(s):  
Elif YILMAZ ◽  
Sevda ALTAŞ ◽  
Nildeniz ADMAN ◽  
Burçin YALÇIN ÖZKAN
Keyword(s):  
Production Process ◽  
High Temperatures ◽  
Production Costs ◽  
Raw Material ◽  
Post Processing ◽  
Sale Price ◽  
Polyester Fabrics ◽  
Alkaline Environments ◽  
Textile Finishing ◽  
Finishing Processes

The pre-finishing, finishing, and dyeing processes applied to the fabrics are carried out at high temperatures, in acidic or alkaline environments. Conventional metalized yarns which are produced by metalized yarn companies cannot resist these conditions that change due to raw material type. Metalized parts exfoliate when exposed to these conditions, and shiny appearance disappears completely. Therefore, in order to be a solution for this problem for the products that the use of metalized yarn is required, companies produce fabrics by using metalized yarns that were colored in bobbin form and choose proper application conditions for metalized yarns. However, because this solution increases production time and workmanship, the production costs and the product’s sale price increase correspondingly. The use of metalized yarns with untreated fiber is more advantageous than the method mentioned above for companies in terms of both cost and ease of production process. For this purpose, in this study, the resistance of metalized yarns that were produced by using lamination technique was tested against the chemicals which metalized yarns can be exposed during textile finishing processes, and the appearances of the fabrics were evaluated. Because metalized yarns are commonly used in the production of cotton and polyester fabrics, finishing processes that are applied to cotton and polyester fabrics were applied to metalized fabrics in a textile finishing laboratory. Then post-processing appearances of fabrics were evaluated subjectively.

scholarly journals Analysis of the bamboo construction process in the architecture of Leiko Motomura and Simón Vélez

2021 ◽  
Vol 9 (9) ◽  
pp. 589-600
Author(s):  
Vanessa Carolina de Souza ◽  
Célia Regina Moretti Meirelles
Keyword(s):  
Environmental Impact ◽  
High Resistance ◽  
3D Models ◽  
Construction Process ◽  
Cultural Center ◽  
Great Capacity ◽  
Natural Materials ◽  
With Screws

The interest in the use of natural materials by construction professionals has been growing as the concern with designing buildings with low environmental impact arises. For this reason bamboo is an excellent choice, as this material has a high resistance parallel to the fibers, is light and has a great capacity to incorporate CO². Given the context described above, this article aims to analyze the constructive techniques in bamboo culms in two works of architectural relevance: Max Feffer Cultural Center (Brazil) and Casa Serra Grande (Brazil), by architects Leiko Motomura and Simón Vélez. For this, field visits were made for a better understanding of bamboo connections, analysis of photographs, files, 3D models and bibliographical research regarding the material. The study helps to understand and reflect on the constructive components of bamboo in architectural projects, highlighting the association between the traditional elements of fittings, associated with the technology available today, such as the grout associated with screws, clamps and spacers.

Trajectory Generation for Glazing Spray Gun Based on STL Model

2014 ◽  
Vol 487 ◽  
pp. 617-620
Author(s):  
Hai Peng Pan ◽  
Hao Feng ◽  
Li Gang Cao
Keyword(s):  
Ceramic Industry ◽  
Trajectory Generation ◽  
New Method ◽  
Freeform Surface ◽  
Ceramic Product ◽  
Manual Work ◽  
Stl Model ◽  
Product Surface ◽  
Spray Gun

Glazing is a key procedure in ceramic product surface decorating processing. Recently, robots are gradually utilized to fulfill the glazing work instead of manual work. However, the researches on freeform surface glazing technology lag behind the research on robotics technology, thus limits the application of glazing robot in ceramic industry. In order to improve the quality and efficiency of robot glazing, this paper presents a new method which is base on STL model to generate trajectory for glazing spray gun. The whole procedures of this method have been discussed explicitly.

Characteristics of Synthesized Diamond Films by Using CACVD Techniques at High Temperatures

2009 ◽  
Vol 421-422 ◽  
pp. 131-134
Author(s):  
Y. Wongprasert ◽  
S.B. Pongsai
Keyword(s):  
Chemical Vapor Deposition ◽  
High Temperatures ◽  
High Resistance ◽  
Diamond Film ◽  
Vapor Deposition ◽  
Diamond Films ◽  
Chemical Vapor ◽  
Hydrogen Termination

This paper presents synthesized diamond films by using combustion activated chemical vapor deposition (CACVD) techniques. The characteristics of diamond films have been studied at wide ranges of temperature (30-400°C). The resistance of diamond films has been determined for hydrogen termination times of 5, 10, 15, and 20 minutes, and at the operation temperatures of 500, 600, and 700°C. The investigation found that, at 30°C a synthesized diamond film has a high resistance (1010 ), whereas at high temperatures (100-400°C) the resistance has decreased from 4.04 M to 2.42 M. The result obtained from the hydrogen termination showed that the resistance has decreased by 105-106  (at 30°C). Summarily, it can be stated that the higher the hydrogen termination times and operation temperatures, the lower the resistance of diamond films.

Nonstabilised Azomethine Ylids from N-Oxides: Unravelling the Deprotonation of N-Methylmorpholine N-Oxide

2014 ◽  
Vol 67 (9) ◽  
pp. 1309 ◽  
Author(s):  
Paul Malek Mirzayans ◽  
Elizabeth H. Krenske ◽  
Craig M. Williams
Keyword(s):  
Density Functional Theory ◽  
Low Temperature ◽  
High Temperatures ◽  
Density Functional ◽  
Temperature Reaction ◽  
Functional Theory ◽  
Strong Base ◽  
Mechanisms Of Formation ◽  
Cyclic Systems

Nonstabilised azomethine ylids (NAYs) are useful 1,3-dipoles, but their synthetic applications are restricted by the high temperatures often needed for their generation, and by an incomplete understanding of the effect of heteroatoms in cyclic systems. We have examined the behaviour of N-methylmorpholine N-oxide (NMO) as a NAY precursor in the Roussi reaction (low-temperature reaction of an N-oxide with strong base). The choice of base is critical to achieving cycloadduct formation. We report synthetic and computational (density functional theory) investigations of the products obtained with different bases and their mechanisms of formation.

Analysis of the Possibility of Using Geopolymers as a Matrix in Sprayed Concretes Used under Extreme Conditions

2012 ◽  
Vol 253-255 ◽  
pp. 576-582 ◽  
Author(s):  
Amos Dufka ◽  
Jana Kosíková ◽  
Lenka Mészárosová ◽  
Marek Liška
Keyword(s):  
High Temperatures ◽  
High Resistance ◽  
Fire Risk ◽  
Extreme Conditions ◽  
Extreme Temperatures ◽  
Considerable Potential

The article analyses the possibility of using geopolymers as a matrix of sprayed concretes intended for realisation of constructions in the environment with an increased fire risk. Thanks to their specific properties, geopolymers show a high resistance to extreme temperatures. Thus, using geopolymers as a matrix shows a considerable potential in the light of development of sprayed concretes resistant to high temperatures.

scholarly journals Research on the models and implementation techniques of ceramic MES system Based on ISA95

2021 ◽  
Vol 236 ◽  
pp. 02030
Author(s):  
Liping Zhang ◽  
Xiaolong Yang ◽  
Yongqian Xu ◽  
Quanwang Yu
Keyword(s):  
Production Process ◽  
Ceramic Industry ◽  
Information Level ◽  
Implementation Techniques ◽  
Mes System ◽  
Ceramic Manufacturing ◽  
High Flexibility

This paper is based on ISA95, combined with the problems existing in the production process of ceramic products, to study the models and implementation techniques of ceramic MES system. It has realized the high flexibility and intelligence of ceramic manufacturing, and the traceability of ceramic products, as well as has improved the information level of the ceramic industry.

Revisiting the Concept of HTR Wallpaper Fuel

2008 ◽  
Author(s):  
Alain Marmier ◽  
Michael A. Fu¨tterer ◽  
Kamil Tucˇek ◽  
Han de Haas ◽  
Jim C. Kuijper ◽  
...  
Keyword(s):  
Fission Product ◽  
Production Process ◽  
Power Density ◽  
High Temperatures ◽  
Neutron Transport ◽  
Homogeneous Distribution ◽  
Fissile Material ◽  
Radial Temperature ◽  
Coated Particles ◽  
Product Release

Good safety characteristics are an outstanding feature of High Temperature Reactors (HTR): • The high graphite inventory in the core provides significant thermal inertia. Graphite also has a high thermal conductivity, which facilitates the transfer of heat to the reflector, and it can withstand high temperatures; • The strongly negative Doppler coefficient gives a negative feedback, such that the reactor shuts down by itself in overpower accidental conditions; • The high quality of fuel elements — tri-isotropic (TRISO) coated particles — minimizes operational and accidental fission gas release. The materials selected have resistance to high temperatures; • The low power density enables stabilization of core temperature significantly below the maximum allowable, even in case of severe accidents (such as loss-of-coolant accident). Together, these aspects significantly reduce the risk of massive fission product release, which is one of the attractive features of HTRs. The fuel that is currently used in pebble bed reactors such as AVR, HTR-10 and soon PBMR is based on a homogeneous distribution of coated particles within a fuel pebble. This homogenizes power density in the pebble, but creates a radial temperature gradient across the fuel sphere. Fuel particles placed at its centre has the highest temperature. Reducing the average temperature of particles would help preserve their integrity and maintain the resistance of the first barrier against fission product release. As early as the 1970s, attempts were made to reduce the peak fuel temperature by means of so-called “wallpaper fuel”, in which the fuel is arranged in a spherical shell within a pebble. At that time, the production process was not sufficiently mature and had caused unacceptable damage to the (less performing) BISO particles, which is why this fundamentally promising concept was abandoned. In this paper, proposals will be put forward to improve the production process. This paper further exploits the wallpaper concept, not only from the point of view of temperature reduction, but also for enhanced neutronic performance through improved neutron economy, resulting in reduced fissile material and/or enrichment needs or providing the potential to achieve higher burn-up. Parameters modified were the density of the central fuel-free graphite zone and the packing fraction of the fuel zone. It is demonstrated that this fuel type impacts positively on the fuel cycle, reduces production of minor actinides (MA) and improves the safety-relevant parameters of the reactor. A comparison of these characteristics with PBMR-type fuel is presented. The calculations were performed using Monte Carlo neutron transport and depletion codes MCNP/MCB and the deterministic code WIMS. By comparison with PBMR fuel, the “wallpaper design” of the fuel pebble results in an effective neutron multiplication coefficient increase (by about 2%), which is combined with a decrease of between 3 and 15% in MA production. An improved neutron economy of the heterogeneous design enables enrichment of the “wallpaper type” of fuel to be reduced by more than 6%.

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