Results 31 to 40 of about 2,032 (202)
Yankuang ceshi, 2022 BACKGROUND With the increasing demand for scandium resources, countries around the world have carried out scandium metallogenic mechanism research and prospecting in recent years.
YANG Bo, YANG Li, MENG Wenxiang
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, 2021 The martensitic-type phase transition pathways between any two among rutile, columbite-type, and baddeleyite-type phase of TiO2 are studied with linear interpolation and G-SSNEB methods within first-principles calculations.
Zhen-Yi Jiang +4 more
core +1 more source
Journal of Advanced Ceramics, 2019 (1−x)CoTiNb2O8−xZnNb2O6 microwave dielectric ceramics were prepared via the conventional solid-state reaction route with the aim of reducing the τ f value and improving the thermal stability. The phase composition and the microstructure were investigated
Mengjuan Wu +2 more
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Late hydrothermal mineralization in a fenitic halo of the Ilmenogorsk alkaline complex (South Urals) [PDF]
МинералогияLate hydrothermal veins exposed in the northern wall of the Novy peeble quarry are studied in a fenitic halo of the western contact of the Ilmenogorsk miaskite complex (South Urals) using scanning electron microscopy, Raman spectroscopy and X-ray ...
M.A. Rassomakhin +3 more
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XXIV. Ueber den Columbit [PDF]
Zeitschrift für Kristallographie - Crystalline Materials, 1887 n ...
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The Extraction of Niobium and Tantalum from Columbite by the Nitrofluor Process [PDF]
, 2010 application/pdfThe Nitrofluor process provides a through method of dissolving the columbite in a nonaqueous inorganic solvent, purifying the niobium and tantalum, and separating them each other by volatile separation techniques.
KIGOSHI, Akiichi +2 more
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Small, EarlyView.ABSTRACT Active and stable electrocatalysts are critical for sustainable hydrogen production, particularly for high‐current‐density water electrolysis and specialized applications like seawater splitting. However, most water‐splitting electrocatalysts show limited activity at high current densities and poor long‐term stability, making it difficult to ...
Nikhil Komalla, Nelson Y. Dzade
wiley +1 more source
Ordering of pentavalent cations in columbite–tantalite [PDF]
Acta Crystallographica Section A Foundations of Crystallography, 2013 n ...
Tarantino, Serena C., Zema, Michele
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Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology
Geostandards and Geoanalytical Research, EarlyView.Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook +38 more
wiley +1 more source
Information &Functional Materials, Volume 3, Issue 3, Page 268-295, September 2026.Piezoelectric materials are reviewed as active platforms for medical ultrasound, bridging electromechanical fundamentals, transducer architectures, and biomedical applications. Material–device co‐design is emphasized as the key to high‐performance diagnosis, therapy, monitoring, wearable ultrasound, and emerging ultrasound‐responsive functions ...
Jianan Li, Qing Wan
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