Results 21 to 30 of about 4,525 (206)
Raman study of MgAl2O4–FeAl2O4 and MgAl2O4–MgFe2O4 spinel solid solutions
, 2015 Spinels oxides are minerals or synthetic materials which are nowadays attracting considerable interests because of their physical and chemical properties. Ten synthetic spinels belonging to the MgAl2O4–FeAl2O4 solid-solution and four synthetic spinels belonging to the MgAl2O4–MgFe2O4 solid-solution have been studied by Raman spec-troscopy to verify the
D'IPPOLITO, VERONICA +3 more
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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 +7 more
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Tạp chí Khoa học Đại học Cần Thơ, 2022 Bột huỳnh quang MgAl2O4 đồng pha tạp Cr3+ và Na+ đã được nghiên cứu và chế tạo bằng phương pháp đồng kết tủa. Cấu trúc pha, hình thái, thành phần và các tính chất quang của mẫu đã được khảo sát bằng nhiễu xạ tia X (XRD), kính hiển vi điện tử quét phát ...
Nguyễn Thị Kim Chi +5 more
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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 +7 more
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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 +4 more
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Angewandte Chemie, EarlyView.Trace Mg doping into gallia–alumina generates hole‐type oxygen species that accelerate hydrogen recombination, eliminating the need for Pt promotion. The fully oxide‐based catalyst resists sintering under repeated regeneration, outperforming benchmark PtSn and CrOx catalysts with exceptional stability over 30 dehydrogenation–regeneration cycles ...
DongHwan Oh +8 more
wiley +2 more sources
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 ...
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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. +8 more
core +1 more source
Synthesis and fabrication of MgAl2O4 ceramic foam via a simple, low-cost and eco-friendly method
Journal of Asian Ceramic Societies, 2016 The MgAl2O4 nanocrystalline powder was synthesized using naturally available egg white and inexpensive metal nitrate salts. During this process, the freshly extracted egg white was mixed with metal nitrate salt and subsequently heated at 350 °C in a pit ...
Shuvendu Tripathy +2 more
doaj +1 more source
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 +2 more
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