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2018-2-1 · The results from XRD analysis are summarized in Table 7 together with predicted phases from TEC. 3.4. Discussion. When ash slag comes in contact with the material probes, refractory components dissolve and change the slag composition.
Get Price2021-5-31 · X-ray diffraction (XRD) is one of the most important non-destructive tools to analyze all kinds of matter—ranging from fluids, to powders and crystals. From research to production and engineering, XRD is an indispensable method for materials characterization and quality control.
Get Price2017-1-5 · The powders were analyzed with X-ray diffraction (XRD) using a PANalytical X'Pert PRO powder diffractometer (CuKα radiation, X'Celerator detector, Ni Kβ filter). Before analysis, the powders Int. Journal of Refractory Metals and Hard Materials 62 (2017) 97–103 ⁎ Corresponding author. E-mail address: [email protected] (J. Weidow).
Get Price2021-4-1 · LKAB, 971 28 Luleå, Sweden . Corresponding author: [email protected] . Abstract. To investigate the mechanisms underlying the depletion of mullite/corundum-based refractory bricks used in rotary kilns for iron ore pellet production, the reaction mechanisms between scaffold material and refractory bricks have been studied on the ...
Get Price2021-3-26 · Refractory lining failure of damaged magnesia bricks and used alumina bricks was investigated by XRF, XRD, SEM-EDS analysis and computational thermochemistry (phase diagrams). In addition, the effect of oxygen partial pressure towards the refractory lining and alkali sulphate ratio were also determined.
Get Price2007-5-16 · 2 MATERIAL, EXPERIMENTAL AND ANALYTICAL METHODS USED 9 2.1 Chemicals 9 2.1.1 Black liquor smelt components 9 2.1.2 Refractory lining 9 2.2 Analytical and experimental equipment 10 2.2.1 Glove box 10 2.2.2 High temperature microscopy (HTM) 11 2.2.3 X-ray powder diffraction (XRD) and high temperature X-ray powder diffraction (HT-XRD) 12
Get Price2019-5-1 · 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.
Get Price2019-5-26 · The experimental results showed that a good refractory material with refractoriness of 1660 °C, bulk density of 2.92 g/cm 3, apparent porosity of 1.82%, and compressive strength of 100.61 MPa could be obtained when the slag was sintered with addition of 20 wt % sintered magnesia at 1350 °C for 3 h. Due to the low production cost and property ...
Get PriceDr. Ms Jane Li, (National Penghu University of Science and Technology, Magong, Penghu, Republic of China) Chromium Oxide Powder (Cr2O3) is an important refractory material due to its high melting temperature (about 2300 C) and oxidation resistance; although its sinter-ability is very poor and requires special sintering condition to achieve high density.
Get Price2017-7-4 · refractory metals whose physical and chemical properties make them valuable elements for the steel industry [1]. These rare refractory metals occur in limited amounts in nature. Thus the need to develop technologies that can be used to recover such refractory metals from secondary sources has been of great interest for many researchers.
Get PriceLKAB Minerals offer Brown and White Fused Alumina for the Refractory industry. Brown Fused Alumina is a dense material produced from bauxite raw material. The end product has a low iron content making it particularly valuable in refractory applications. White Fused Alumina is produced by fusing calcined alumina. It is white in colour, a dense ...
Get Price2018-9-28 · The electron diffraction and the XRD results of the TaW-series suggest a highly textured or epitaxial (110) growth on the Al 2 O 3 (001). The TaW and the TaW(C) films exhibit a typical columnar ...
Get PriceThe successful X'Pert platform is continued by the Malvern Panalytical’s X'Pert³ range of X-ray diffraction systems. With new on-board control electronics, compliance with the latest and most stringent X-ray and motion safety norms, advances in eco-friendliness and reliability the X'Pert³ …
Get PriceVanadium carbide is known, for its hardness and other unique properties, as a refractory material. The synthesis of vanadium carbide is always associated with the utilization of expensive active metals, such as aluminum, calcium and magnesium, as a reducing agent to extract the vanadium metal from its corresponding oxide, followed by carbidization.
Get PriceXRD patterns revealed the presence of NaAlO 2 in the white layer on the hot face and minor to trace amounts in XRD patterns from the dark areas adjacent to cracks. XRD patterns were collected on the reference fusion-cast alumina refractory at the locations marked above with relative amount of NaAlO 2 indicated by color.
Get PriceDr. Nicholaos G. Demas, (Newcastle University School Of Machanical & Systems Engg. UK) Tantalum Nanoparticles: The properties of tantalum nanopowder is similar to gold nanoparticles, but are far more cost-effective, and thus, well-positioned to replace gold in regenerative medicine for labeling and tracking of cell grafts through x-ray-based imaging.
Get Price2019-11-8 · Umeå, Sweden ‡Nordkalk AB, Kungsängsva gen 22, SE-731 36 Kö ̈ping, Sweden ABSTRACT: Ring deposits are common problems in rotary kiln operations. The ring is constantly subjected to thermal and mechanical wear counteracting the growth of the ring. If the ring hardens or if the growth of the ring is too rapid, the kiln needs
Get PriceIn the paper were reviewed mechanical and chemical properties of the modern refractories applied in the metallurgical industry and was provided their classification for the goal of optimal selection of refractories kind for specific technological conditions, reducing costs and solving the environmental issues. For various applications in the steel industry, in the furnace linings for iron and ...
Get Price2017-1-5 · The powders were analyzed with X-ray diffraction (XRD) using a PANalytical X'Pert PRO powder diffractometer (CuKα radiation, X'Celerator detector, Ni Kβ filter). Before analysis, the powders Int. Journal of Refractory Metals and Hard Materials 62 (2017) 97–103 ⁎ Corresponding author. E-mail address: [email protected] (J. Weidow).
Get Price2019-5-6 · entropy Article Processing and Characterization of Refractory Quaternary and Quinary High-Entropy Carbide Composite Hanzhu Zhang and Farid Akhtar * Division of Materials Science, Luleå University of Technology, 971 87 Luleå, Sweden; [email protected]
Get Price2017-7-4 · refractory metals whose physical and chemical properties make them valuable elements for the steel industry [1]. These rare refractory metals occur in limited amounts in nature. Thus the need to develop technologies that can be used to recover such refractory metals from secondary sources has been of great interest for many researchers.
Get Price2018-9-28 · The electron diffraction and the XRD results of the TaW-series suggest a highly textured or epitaxial (110) growth on the Al 2 O 3 (001). The TaW and the TaW(C) films exhibit a typical columnar ...
Get Price2017-7-4 · refractory metals whose physical and chemical properties make them valuable elements for the steel industry [1]. These rare refractory metals occur in limited amounts in nature. Thus the need to develop technologies that can be used to recover such refractory metals from secondary sources has been of great interest for many researchers.
Get PriceS 65115 Karlstad, Sweden ABSTRACT Prior laboratory corrosion studies along with experience at the black liquor gasifier in New Bern, North Carolina, clearly demonstrate that serious material problems exist with the gasifier’s refractory lining. Mullite-based and alumina-based refractories used at the New Bern facility suffered significant
Get Price2018-9-28 · The electron diffraction and the XRD results of the TaW-series suggest a highly textured or epitaxial (110) growth on the Al 2 O 3 (001). The TaW and the TaW(C) films exhibit a typical columnar ...
Get PriceOxidation Behavior of Alumina/Graphite Refractory Materials Arashk MEMARPOUR,1) Voicu BRABIE2) and Pär G. JÖNSSON3) 1) Dalarna University, SE-781 88 Borlänge, Sweden. E-mail: [email protected] 2) Dalarna University, SE-781 88 Borlänge, Sweden. E-mail: [email protected] 3) Division of Applied Process Metallurgy, Royal Institute of Technology, SE-100 44
Get PriceThe successful X'Pert platform is continued by the Malvern Panalytical’s X'Pert³ range of X-ray diffraction systems. With new on-board control electronics, compliance with the latest and most stringent X-ray and motion safety norms, advances in eco-friendliness and reliability the X'Pert³ …
Get PriceFinding resilient refractory materials for slagging gasification systems have the potential to reduce costs and improve the overall plant availability by extending the service life. In this study, ...
Get PriceXRD pattern as a = 0.307 nm and c = 0.330 nm. The lattice planes of the HCP structure identified in Fig. 2a are denoted by considering the primitive hexagonal unit cell. The lattice strain for individual reflection planes of the HCP structure was calculated by the Wilson equation33 included in XRD analysis
Get Price2008-9-29 · a IFM Material Physics, Linköping University, SE-581 83 Linköping, Sweden. ... Ta is a refractory metal with a high melting point, a low electrical resistivity, and ... (XRD) using θ-2θ scans in a Philips Bragg-Brentano diffractometer. The film resistivity
Get Price2016-4-14 · Institutionen för material- och miljökemi, Stockholms universitet ©Kamran Saeidi, Stockholm University 2016 ISBN 978-91-7649-353-3 Printed in Sweden by US-AB, Stockholm 2016 Distributor: Department of Materials and Environmental Chemistry
Get Price2016-3-14 · Bjuf AB, Sweden. Kaolin from the Mutaka deposit was used as the main source of alumina while ball clay from Mukono was the main plasticizer and binder material. The formulated green body was consolidated by wet pressing and fired at 1350°C in a tunnel kiln. Characterization of the sintered
Get PriceStandard Test Method for Load Testing Refractory Shapes at High Temperatures. ASTM C20. Standard Test Methods for Apparent Porosity, Water Absorption, Apparent Specific Gravity, and Bulk Density of Burned Refractory Brick and Shapes by Boiling Water ... Sweden representing Hot... 01/07/2021. Jessica Putnam-Phillips on ClayShare. Jessica ...
Get PriceALS Refractory personnel are API-936 certified, specializing in refractory system evaluation, job preparation & planning, material selection, future repair recommendation matrix, repair maps and optimization. Our final report package contains all repair parameters including materials used, sq ft, anchoring and all installation details.
Get PriceS 65115 Karlstad, Sweden ABSTRACT Prior laboratory corrosion studies along with experience at the black liquor gasifier in New Bern, North Carolina, clearly demonstrate that serious material problems exist with the gasifier’s refractory lining. Mullite-based and alumina-based refractories used at the New Bern facility suffered significant
Get PriceOxidation Behavior of Alumina/Graphite Refractory Materials Arashk MEMARPOUR,1) Voicu BRABIE2) and Pär G. JÖNSSON3) 1) Dalarna University, SE-781 88 Borlänge, Sweden. E-mail: [email protected] 2) Dalarna University, SE-781 88 Borlänge, Sweden. E-mail: [email protected] 3) Division of Applied Process Metallurgy, Royal Institute of Technology, SE-100 44
Get Price(2003)]. Refractory lining is used to protect the exterior metallic part of the gasifier vessel. A dense refractory material layer is designed to be exposed to the highest temperature environment. The second “safety” layer is usually made of a similar material. Subsequent layers are used to provide insulation and allow for expansion.
Get Price2017-3-1 · Each XRD image was calibrated (using a LaB 6 reference material), and data were azimuthally integrated from 2D images to 1D patterns using Dawn v1.9 . Each 2θ step in the reduced data set was then reconstructed to create the final 3D datastack, having two spatial axes ( x , y ) and with the third axis ( z ) being the reconstructed pattern (2θ).
Get Price2008-10-9 · TEM micrograph of β-SiAlON nanostructure whiskers together with results of the selected area election diffraction (SAED) investigation is shown in Figure 3.The straight column-shaped whiskers with 160 nm in diameter could be observed in Figure 3(a), their aspect ratio having reached more than 40. The diffraction pattern, marked dots on the body, indicated that the nanostructure whisker is a ...
Get Price2017-5-10 · To understand this texture change, XRD pole figures were measured. The {111} and {200} pole figures for the Cu films ~150 nm thick deposited at −130 V bias are displayed in Fig. 2(a) (DCMS film ...
Get Price2021-5-30 · 'The Three P's' Purity. American Elements grown ultra high purity crystals for solar energy For many high-tech and scientific applications, the physical and chemical properties of materials must be both highly reliable and constrained within very narrow parameters. The exact properties of interest often vary by application, but what many such properties have in common is that they are ...
Get Price2018-8-13 · An equiatomic CoCrFeMnNi high-entropy alloy (HEA) thin film coating has been successfully developed by high-vacuum Radio Frequency (RF) magnetron sputtering. The deposition of a smooth and homogenous thin film with uniformly distributed equiaxed nanograins (grain size ~ 10 nm) was achieved through this technique. The thin film coating exhibits a high hardness of 6.8 ± 0.6 GPa, which is ...
Get PriceOxidation Behavior of Alumina/Graphite Refractory Materials Arashk MEMARPOUR,1) Voicu BRABIE2) and Pär G. JÖNSSON3) 1) Dalarna University, SE-781 88 Borlänge, Sweden. E-mail: [email protected] 2) Dalarna University, SE-781 88 Borlänge, Sweden. E-mail: [email protected] 3) Division of Applied Process Metallurgy, Royal Institute of Technology, SE-100 44
Get PriceS 65115 Karlstad, Sweden ABSTRACT Prior laboratory corrosion studies along with experience at the black liquor gasifier in New Bern, North Carolina, clearly demonstrate that serious material problems exist with the gasifier’s refractory lining. Mullite-based and alumina-based refractories used at the New Bern facility suffered significant
Get Price2018-5-15 · with XRD analysis in Figure 5. The microstructure in Figure 4, shows typical voids and oxide stringers for HVOF FeSP529 and 6AB samples. HVAF samples of the same powder show the same features but to a lower extent. Samples of FeSP586 powder, show the best overall microstructure with lowest content of voids and oxide stringers. XRD analysis in ...
Get Price2021-4-23 · X-ray diffraction (XRD) pattern (λ = 1.54 Å) of the as-cast Al 0.10 Ti 0.30 V 0.25 Zr 0.10 Nb 0.25 alloy and corresponding Rietveld refinement analysis. The hydrogenation of Al 0.10 Ti 0.30 V 0.25 Zr 0.10 Nb 0.25 was carried out in a single aliquot at room temperature, and the final equilibrium pressure was around 25 bar.
Get Price2019-2-8 · A multicomponent composite of refractory carbides, B 4 C, HfC, Mo 2 C, TaC, TiC and SiC, of rhombohedral, face-centered cubic (FCC) and hexagonal crystal structures is reported to form a single phase B 4 (HfMo 2 TaTi)C ceramic with SiC. The independent diffusion of the metal and nonmetal atoms led to a unique hexagonal lattice structure of the B 4 (HfMo 2 TaTi)C ceramic with alternating layers ...
Get Price2010-6-20 · Part 2: XRD methods Analyse chimique des produits réfractaires contenant du carbure de silicium à liaison nitrure - Partie 2 : Méthodes de DRX Chemische Analyse von feuerfesten Erzeugnissen aus nitridgebundenem Silicumcarbid - Teil 2: XRD-Verfahren This European Standard was approved by CEN on 15 February 2007.
Get PriceChemical analysis is conducted for a wide range of purposes from material identification and characterization to quality control monitoring. In our extensive and well equipped laboratories most of the testing is conducted under our UKAS ISO 17025:2017 accreditation (UKAS accredited testing laboratory No. …
Get Price1998-5-13 · side of the mound, penetrated to 51.2 mbsf through mound material and into basaltic basement. Two holes (Holes 957P and 957O) on the upper terrace to the north of the Black Smoker Complex, TAG-5, had a combined penetration to 59.4 mbsf. Preliminary shipboard interpre-tation of cored rocks recovered by drilling at the TAG mound suggest
Get Price2016-2-2 · XRF is a non-destructive analytical technique used to determine the elemental composition of materials. This technology is used in mining and exploration, positive material identification for power generation, metal manufacturing, inspection, and recycling, precious metal and jewelry analysis, consumer safety and regulatory, and other industries.. XRF analyzers determine the chemistry of a ...
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