نتایج جستجو برای: ultrasonically reprecipitation

تعداد نتایج: 1262  

Journal: :Chimia 2010
Joël Brugger Aoife Mcfadden Claire E Lenehan Barbara Etschmann Fang Xia Jing Zhao Allan Pring

Replacement reactions ('pseudomorphism') commonly occur in Nature under a large range of conditions (T 25 to >600 degrees C; P 1 to >5 kbar). Whilst mineral replacement reactions are often assumed to proceed by solid-state diffusion of the metal ions through the mineral, many actually proceed via a coupled dissolution and reprecipitation (CDR) mechanism. In such cases, a starting mineral is dis...

Journal: :Electrochemistry Communications 2021

A medium-entropy alloy (MEA) of CoNiCu with a face-centered cubic structure was successfully obtained by electrochemical deposition. To achieve nearly equiatomic composition, water-in-oil emulsion used as the solution for electrodeposition. Since water droplets in tended to be destroyed within 10 min under electrolysis, periodically irradiated ultrasonically maintain its emulsified state order ...

Journal: :Acta Astronautica 2022

This paper explores the superposition of ultrasonic vibration on vertical rotating augers in a variety granular media. Ultrasonic is known to facilitate direct penetration media, and it anticipated that any related reduction torque requirements system might improve augering performance. Experimental results suggest that, compared non-ultrasonic scenario, ultrasonically assisted significantly pr...

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