Results 21 to 30 of about 3,718 (215)

The phase composition and microstructural evolution of a novel MgO-C-Al-Si refractory used in bottom-blowing elements at high temperatures in flowing nitrogen

Journal of Asian Ceramic Societies, 2021
A novel MgO-C-Al-Si refractory with low carbon content used in bottom-blowing elements was prepared, and its phase composition and microstructural evolution were investigated by XRD, SEM and EDS after being treated at 1200–1600°C in flowing nitrogen ...
Mingwei Yan, Jiayu Zhang, Yumin Yang, Kaiqi Liu, Guangchao Sun   +4 more
doaj   +1 more source

AB₂X₄ spinel structures: similarity and differences between the centrosymmetric, Fd3m, and non-centrosymmetric, F4₁32, space groups. [PDF]

Acta Crystallogr B Struct Sci Cryst Eng Mater
Both centrosymmetric, Fd3m, and non‐centrosymmetric, F4132, space groups cannot be distinguished in solving, refining and describing AB2X4 spinel structures in the harmonic approximation. They can be distinguished only by using the third‐order tensor approximation of anisotropic displacement parameters.Many compounds adopting the spinel AB2X4 structure
Arakcheeva A, Magrez A, Chapuis G.
europepmc   +2 more sources

Synthesis of MgAl2O4: Sm3+ Nanophosphor and Its Photoluminescence, Electrochemical Sensing, and Photocatalytic Studies

Advances in Materials Science and Engineering, 2023
A series of MgAl2O4: Sm3+ nanophosphors were synthesized using oxalyl dihydrazide (ODH) as fuel at low temperature. The X-ray diffraction studies revealed a crystallite size of 20 nm for the nanophosphors.
S. N. Manjula, M. Chandrasekhar, M. R. Anil Kumar, Mir Waqas Alam, C. R. Ravikumar, H. C. Ananda Murthy, N. Basavaraju, H. Nagabhushana   +7 more
doaj   +1 more source

Grain refinement efficiency of a new oxide-containing master alloy for aluminium casting alloys [PDF]

, 2014
In this study, grain refinement efficiency of a new oxide master alloy based on MgAl2O4 was demonstrated on an A357 alloy. The grain size of the reference alloy was reduced by 50-60% with the addition of the master alloy and introduction of ultrasonic ...
Dmitry G. Eskin, Vadakke Madam Sreekumar, Nadendla Hari Babu, Sreekumar, VM, Babu, NH, Eskin, DG, Fan, ZY, Zhong Yun Fan   +7 more
core   +1 more source

Investigation of thin films MgAl2O4, deposited on the Si substrates by vacuum thermal evaporation [PDF]

, 2022
The article presents data on the study of X-ray structural and microstructural characteristics of thin films of aluminum-magnesium spinel MgAl2O4 deposited on Si substrates by vacuum thermal evaporation.
Stanchik, A., Djanklich, M. U., Amirov Shakhboz Yo. ugli, Khoroshko, V. V., Trukhanova, E. L., Kulagina, N. A., Suleymanov, S. X., Gremenok, V., Dyskin, V. G.   +8 more
core   +1 more source

Thermal Shock analysis of MgO-MgAl2O4 Refractories Produced from Local MgAl2O4

Uluslararası Muhendislik Arastirma ve Gelistirme Dergisi, 2020
Üstün fiziksel, kimyasal ve termal özellikler sayesinde, spinel çimento, demir ve demir dışı metal endüstrilerinde kullanılan şekilli ve monolitik refrakterlerin üretiminde yaygın olarak kullanılan iyi bilinen bir refrakter hammaddedir. Bu çalışmada, magnezyum-spinel refrakter kompozitlerin termal şok özelliklerine yerli fused ve sinterlenmiş spinel ...
openaire   +4 more sources

Eco-Friendly Synthesis of MgO/MgAl2O4 Core/Shell Nanostructures and their Antimicrobial Evaluation Against Pathogenic Microbial Strains [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2023
Nowadays antimicrobial resistance is one of the important concerns caused by the extensive use of antibiotics. Efforts to find new materials with antimicrobial effects have been more serious than before.
Mohammad Hasan Moshafi, Peyman Rajaei, Mehdi Ranjbar   +2 more
doaj   +1 more source

Facile preparation of a Ni/MgAl2O4 catalyst with high surface area: enhancement in activity and stability for CO methanation

Main Group Metal Chemistry, 2018
To enhance the performance of anti-coking and anti-sintering of the Ni-based catalysts during the reaction process of CO methanation, we synthesized a group of catalysts denoted as “Ni-xMgAl2O4” via the modified co-precipitation method utilizing carbon ...
Wang Shengjia, Tian Zhiwei, Liu Qing, Qiao Yingyun, Tian Yuanyu   +4 more
doaj   +1 more source

Innovative Coating Method of MgAl2O4 or ZnAl2O4 on α-Al2O3 Spheric Nuclei [PDF]

Materials Research, 2015
Structured materials composed of α-Al2O3 spheres covered with a porous and thin layer of MgAl2O4 or ZnAl2O4 were obtained. The innovative coating method developed consists in the formation of a precursor gel of MgAl2O4 or ZnAl2O4 by citrate-nitrate ...
Graciela Mabel Baez, Osvaldo Antonio Scelza, Sergio Rubén de Miguel, Sonia Alejandra Bocanegra   +3 more
doaj   +1 more source

FABRICATION OF TRANSPARENT MgAl2O4 SPINEL CERAMICS BY PECS PROCESSING OF COMBUSTION - SYTHESIZED NANOPOWDERS

Acta Metallurgica Slovaca, 2019
Transparent MgAl2O4 ceramic could be found in a wide range of applications for both military and civil sector due to its high melting point, good mechanical properties, small refractive index (1.71) and its ability to allow light in range from UV to mid ...
Yen Ngoc Nguyen, Anh-Tu Dao, Minh-Hai Le, Khanh Quoc Dang, Makoto Nanko   +4 more
doaj   +1 more source