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  • (PDF) CORROSION TESTS FOR REFRACTORY

    observation of phenomena taking place in situ and determination of characteristic temperatures of a system: refractory material + corrosive agent. For this purpose, the

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  • Service life prediction for refractory materials ...

    2008-6-1 · Ultrasonic pulse velocity testing and image analysis were used to predict the thermal stability of cordierite–mullite refractories. Two compositions used as substrates in fast firing of porcelain whiteware, characterized by different microstructure and crack propagation behavior, were investigated. Fracture strength and fracture toughness values were obtained from three point bending test ...

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  • Fabrication of sustainable insulation refractory ...

    2019-5-1 · Refractory grogs act as a non-shrinkage material that increasing the stress resists ability of the bricks . Table 3 shows that the CCS of samples is decreased with the increase in fly ash addition. CCS values are decreased to almost 36% for fully replacement of clay with FA when firing at 800 °C.

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  • Modelling of high-chromia refractory spalling in

    2008-12-1 · Yakobson previously derived a model for the tensile cracking of a homogeneous solid as solutes or other volatile species are removed. Fig. 1 shows a schematic of the crack network that results from the volume shrinkage of the host material. The volatile species diffuses through the solid with diffusivity D (cm 2 /s), and escapes from the cracked/solid interface according to a rate constant k ...

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  • Refractory concretes uniaxial compression behaviour

    2011-12-1 · The phenomena strengthened the binder links with the evacuation of water, while inducing shrinkage of the material accompanied with microcracking. 29 But the strengthening effect is preponderant since both refractory concretes show an increase in strength: from −96 MPa at 25 °C to −120 MPa at 250 °C for And-LCC, and from −92 MPa at 25 ...

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  • Recent advances in silica-alumina refractory: A review ...

    2014-6-1 · Aluminosilicate refractories are manufactured using refractory clays, sillimanite minerals, bauxite, and mixtures of alumina and silica sand. They will refer, somewhat arbitrarily, to common crystalline compounds with melting temperatures of at least 1500 °C .The major categories of traditional refractories are fire clays, high alumina, and silica.

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  • (PDF) From stellar nebula to planets: The refractory ...

    Refractory mass fraction relative to all condensed molecules as a function of the distance to the star in five discs of different masses (a core = 14 AU and γ = 0.8, fixed).

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  • A Novel Approach for Measuring the Thickness of

    2020-12-10 · The third way to study the relationship between the thickness of the refractory material and the EMF signal was to use the EMF sensors that were fixed at five depths (24, 19, 14, 9, and 4 …

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  • Refractory element fractionation in the Allende

    The addition of CI-like material only changed the absolute elemental concentrations of bulk matrix and bulk chondrite, while refractory and main component element ratios such as Mg/Si remain ...

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  • Dissolution of refractories for gasification process of ...

    2012-3-1 · Highlights MgAl 2 O 4 and Al 2 O 3 refractories were designed for petroleum coke gasification process in steel industry. Refractories were exposed to petroleum coke ashes and exhibited dissolution due to molten slag penetration. Microstructural analysis revealed formation of spinel’s type (Ni 2+, Fe 2+ and Mg 2+)IV (Al 3+, Fe 3+)VI 2 O 4. Hibonite and gehlenite phases were also observed ...

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  • New Experimental Method for Consolidation some

    2021-4-24 · Utilization of coated powders as initial materials and of hot shock wave compacting technology allows under relatively low pressures (up to 10 GPa) to snap into action the mechanism of deformation characteristic for very high pressure and to obtain compacts of refractory and graphitc

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  • aluminabricks, Author at RS Kiln Refractory Bricks

    The invention relates to precluding the shortcomings intrinsic to the conventional unburned carbon-containing refractory bricks, i.e., oxidization under high temperature conditions and the incidental decarbonization, the phenomenon of exfoliation and detachment of the fragile layers, and more particularly to obtaining thereby unburned carbon-containing refractory bricks having the high ...

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  • US4306030A - Carbon-containing refractory - Google

    2021-6-3 · International Journal of Minerals, Metallurgy and Materials (IJMMM, ISSN 1674-4799, CN 11-5787/TF, monthly, started in 1994, formerly known as Journal of University of Science and Technology Beijing) is an international journal devoted to publishing original research articles (and occasional invited reviews) on all aspects of minerals processing, physical metallurgy, process metallurgy, and ...

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  • (PDF) RESEARCH ON INDUCTION HEATING -A REVIEW

    A Google ingyenes szolgáltatása azonnal lefordítja a szavakat, kifejezéseket és weboldalakat a magyar és több mint 100 további nyelv kombinációjában.

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  • International Journal of Minerals, Metallurgy and

    2005-8-16 · branched rod-like). 54) 2.2 Exogenous inclusions Exogenous inclusions arise primarily from the incidental chemical (reoxidation) and mechanical interaction of liquid steel with its surroundings (slag entrainment and erosion of lining refractory). In machining, they produce chatter, causing pits and gouges on the surface of machined sections ...

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  • Google Fordító

    Ishii and Kashiwaya first developed the double hot thermocouple method and applied it to a microgravity experiment to determine the microstructural change of a superconducting oxide in 1992. 9–11 The technique was also used by Murayama et al. 10 to study Marangoni flow in silicate slags under microgravity and by Kuranaga et al. 11 to measure the ultimate length of a silicate slag film to ...

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  • Top 10 Materials with the Highest Melting Point in the

    2012-6-6 · Isothermal oxidation behavior of a refractory high-entropy NbCrMo0.5Ta0.5TiZr alloy was studied during heating at 1273 K for 100 h in flowing air. Continuous weight gain occurred during oxidation, and the time dependence of the weight gain per unit surface area was described by a parabolic dependence with the time exponent n = 0.6. X-ray diffraction and scanning electron microscopy …

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  • Oxidation behavior of a refractory NbCrMo 0.5 Ta 0.5

    2018-10-1 · Open literature publications, in the period from 2010 to the end of January 2018, on refractory high entropy alloys (RHEAs) and refractory complex concentrated alloys (RCCAs) are reviewed. While RHEAs, by original definition, are alloys consisting of five or more principal elements with the concentration of each of these elements between 5 and 35 at.%, RCCAs can contain three or …

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  • Development and exploration of refractory high

    2018-6-8 · II. TAXONOMY AND STATISTICAL ANALYSIS. The first two RCCAs, MoNbTaW and MoNbTaVW, were reported in 2010 by Senkov et al. Reference Senkov, Wilks, Miracle, Chuang and Liaw 6 and in the following years, the number of newly reported RCCAs has increased steadily [].By the end of January 2018, 151 new compositions were described in the open literature, among which 25 are 4 …

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  • Development and exploration of refractory high

    2016-10-28 · like an airplane, it would be burn up due to the heat produced by the friction. The tiles on the shuttle provide a means for thermal protection. There are some 24,300 tiles that measure about six inches long on each side (15.25cm) and vary in thickness from 1 to 5 inches (2.54 to 12.7 cm) depending on where they are attached.

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  • Structures and Materials: Space Shuttle Tiles, Grades 5-8

    The shortcomings intrinsic in conventional unburned carbon-containing refractory bricks, i.e., oxidization under high temperature conditions and incidental decarbonization, and the phenomenon of exfoliation and detachment of the fragile layers are overcome by utilizing a refractory brick material comprising substantially more than 1 weight % carbon, 1-10 weight % aluminium powder and/or ...

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  • GB2040911A - Carbon-containing refractory bricks -

    The invention relates to precluding the shortcomings intrinsic to the conventional unburned carbon-containing refractory bricks, i.e., oxidization under high temperature conditions and the incidental decarbonization, the phenomenon of exfoliation and detachment of the fragile layers, and more particularly to obtaining thereby unburned carbon-containing refractory bricks having the high ...

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  • US4306030A - Carbon-containing refractory - Google

    2016-9-1 · This unique class of 2D material-base hot electron transistors (2D-HETs) shows great potential for 2D material-based high-frequency logic applications upon …

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  • High-entropy alloys | Nature Reviews Materials

    2021-5-11 · 深部生物圈研究进展与展望. Progress and Prospect in Deep Biosphere Investigation. 王风平 1,2,, 陈云如 1,2. 1.上海交通大学微生物代谢国家重点实验室,上海 200240. 2.上海交通大学生命科学技术学院,上海 200240. Wang Fengping 1,2,, Chen Yunru 1,2. 1.State Key Laboratory of Microbial Metabolism ...

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  • Top 10 Materials with the Highest Melting Point in the

    Refractory technology : fundamentals and applications Sarkar, Ritwik. 0 0 . How much do you like this book? What’s the quality of the file? Download the book for quality assessment. What’s the quality of the downloaded files? Year: 2017. Publisher: CRC Press. Language: english. Pages: 314. ISBN 10: 1315368056. ISBN 13: ...

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  • Refractory technology : fundamentals and applications ...

    2012-6-6 · Isothermal oxidation behavior of a refractory high-entropy NbCrMo0.5Ta0.5TiZr alloy was studied during heating at 1273 K for 100 h in flowing air. Continuous weight gain occurred during oxidation, and the time dependence of the weight gain per unit surface area was described by a parabolic dependence with the time exponent n = 0.6. X-ray diffraction and scanning electron microscopy …

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  • Oxidation behavior of a refractory NbCrMo 0.5 Ta 0.5

    2004-10-5 · The paper discusses the material removal process in refractory ceramics eroded by hydro-abrasive jets. In particular, bauxite, sintered magnesia, and magnesia chromite are eroded. The influence of abrasive particle velocity, local exposure time, abrasive mass-flow rate, and abrasive type is investigated. Erosion depth, specific erosion rate, and geometry of the generated cavities are …

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  • Hydro-abrasive erosion of refractory ceramics, Journal

    2015-2-26 · generated zone, which acts like a conical die surface. The surface and subsurface defects are likely to occur on the extruded product if the suf-ficient amount of butt is not kept. Typical etched cross section of a 7075 alloy butt remaining after extrusion is shown in Fig. 8(a). Figure 8(b) shows schematically two clear zones.

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  • Fundamentals of Extrusion - ASM International

    2008-8-14 · The natural phenomena, known as the Aurora Borealis and Aurora Australis, are geomagnetic phenomena of impressive visual characteristics and remarkable scientific interest. Aurorae present a complex behavior that arises from interactions between plasma (hot, ionized gases composed of ions, electrons, and neutral atoms) and Earth’s ...

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  • Simulating the Dynamics of Auroral Phenomena

    2021-2-4 · BrainMass is a community of academic subject Experts that provides online tutoring, homework help and Solution Library services across all subjects, to students of all ages at the University, College and High School levels. Our Academic Experts are all PhDs, Masters or post-graduate level tutors in their subjects, who have all been through our ...

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  • BrainMass - 24/7 Academic Help

    2020-11-26 · Gas Discharge Tubes - Introduction. A gas discharge tube is a bulb or tube (usually glass), with two (or more) electrodes inserted into it, that has been evacuated and filled with a gas or gas mixture usually at somewhat less than atmospheric pressure. All such tubes have the property that, as the voltage applied across the electrodes is ...

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  • Gas Discharge Tubes - Introduction - G3YNH

    2007-7-16 · Like the other sense objects, sound has as its proximate cause the four Great Elements. No matter what sound we hear, it has a degree of loudness and it “strikes the ear”. Its characteristic can be experienced without one having to think about it. We may hear the sound of a bird and it seems that we know at once the origin of the sound.

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  • The Buddhist Teaching on Physical Phenomena

    2021-5-11 · 深部生物圈研究进展与展望. Progress and Prospect in Deep Biosphere Investigation. 王风平 1,2,, 陈云如 1,2. 1.上海交通大学微生物代谢国家重点实验室,上海 200240. 2.上海交通大学生命科学技术学院,上海 200240. Wang Fengping 1,2,, Chen Yunru 1,2. 1.State Key Laboratory of Microbial Metabolism ...

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  • aluminabricks, Author at RS Kiln Refractory Bricks

    2021-6-3 · International Journal of Minerals, Metallurgy and Materials (IJMMM, ISSN 1674-4799, CN 11-5787/TF, monthly, started in 1994, formerly known as Journal of University of Science and Technology Beijing) is an international journal devoted to publishing original research articles (and occasional invited reviews) on all aspects of minerals processing, physical metallurgy, process metallurgy, and ...

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  • International Journal of Minerals, Metallurgy and

    2021-5-16 · Physics & Maths Tutor. Solution Banks. Solution Banks for A-level Maths. Revision Courses. Courses for GCSEs, A-levels and University Admissions.

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  • 7 Things to Consider When Choosing an Aluminum

    2015-2-26 · generated zone, which acts like a conical die surface. The surface and subsurface defects are likely to occur on the extruded product if the suf-ficient amount of butt is not kept. Typical etched cross section of a 7075 alloy butt remaining after extrusion is shown in Fig. 8(a). Figure 8(b) shows schematically two clear zones.

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  • Physics & Maths Tutor

    2020-8-17 · Thermoplasmonics is based on the use of plasmonic nanoparticles as sources of heat remotely controlled by light. This Review discusses its current …

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  • Fundamentals of Extrusion - ASM International

    2021-2-4 · BrainMass is a community of academic subject Experts that provides online tutoring, homework help and Solution Library services across all subjects, to students of all ages at the University, College and High School levels. Our Academic Experts are all PhDs, Masters or post-graduate level tutors in their subjects, who have all been through our ...

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  • Applications and challenges of thermoplasmonics |

    2013-5-23 · Nitrogen exists in steel in two forms namely (i) in the atomic form as interstitial nitrogen, or as unstable and easily dissolved nitrides, e.g. Fe4N etc., and (ii) in the form of stable nitrides. In atomic form, it is known as the active or free nitrogen in steel. In micro-alloyed steels e.g. high strength low alloy (HSLA) steels, some or all ...

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  • Seismic Evidence for Internal Earth Structure

    2020-11-26 · Gas Discharge Tubes - Introduction. A gas discharge tube is a bulb or tube (usually glass), with two (or more) electrodes inserted into it, that has been evacuated and filled with a gas or gas mixture usually at somewhat less than atmospheric pressure. All such tubes have the property that, as the voltage applied across the electrodes is ...

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  • (PDF) Chemical Vapor Deposition of Refractory Metals

    Chemical Vapor Deposition of Refractory Metals and Ceramics 2. Materials Research Society Symposium Proceedings Held in Boston, Massachusetts on December …

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  • Thermal Properties of Metals, Conductivity, Thermal ...

    Engineering Thermal Properties of Metals, Conductivity, Thermal Expansion, Specific Heat Data - Metals in general have high electrical conductivity, high thermal conductivity, and high density. Typically they are malleable and ductile, deforming under stress without cleaving.

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  • Applications and challenges of thermoplasmonics |

    2020-8-17 · Thermoplasmonics is based on the use of plasmonic nanoparticles as sources of heat remotely controlled by light. This Review discusses its current …

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  • Observation and Measurement of Solidification

    Ishii and Kashiwaya first developed the double hot thermocouple method and applied it to a microgravity experiment to determine the microstructural change of a superconducting oxide in 1992. 9–11 The technique was also used by Murayama et al. 10 to study Marangoni flow in silicate slags under microgravity and by Kuranaga et al. 11 to measure the ultimate length of a silicate slag film to ...

    Get Price
  • International Journal of Minerals, Metallurgy and

    2021-6-3 · International Journal of Minerals, Metallurgy and Materials (IJMMM, ISSN 1674-4799, CN 11-5787/TF, monthly, started in 1994, formerly known as Journal of University of Science and Technology Beijing) is an international journal devoted to publishing original research articles (and occasional invited reviews) on all aspects of minerals processing, physical metallurgy, process metallurgy, and ...

    Get Price
  • Spectroscopy in Astronomy | Astronomy - Lumen

    2016-9-1 · This unique class of 2D material-base hot electron transistors (2D-HETs) shows great potential for 2D material-based high-frequency logic applications upon …

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  • Dual-mode operation of 2D material-base hot

    2021-6-4 · Brainly is the knowledge-sharing community where 350 million students and experts put their heads together to crack their toughest homework questions.

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  • Scientists: Geological evidence shows the Great

    The Sci-Hub project supports Open Access movement in science. Research should be published in open access, i.e. be free to read. The Open Access is a new and advanced form of scientific communication, which is going to replace outdated subscription models.

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