نتایج جستجو برای: eutectic mixture

تعداد نتایج: 97889  

The present research aims to study the liquation and re-solidification of liquid during friction stir spot welding of AZ91 alloy. Although friction stir spot welding is a solid-state process, the presence of Mg17Al12 intermetallic compounds results in liquation during the welding process. In this study, friction stir spot welding was performed with a tool rotational speed of 2500 rev/min and a ...

Journal: :Physical chemistry chemical physics : PCCP 2014
Wenkang Tu Zeming Chen Yanqin Gao Zijing Li Yaqi Zhang Riping Liu Yongjun Tian Li-Min Wang

A quantitative evaluation of the contribution of mixing thermodynamics to glass transition is performed for a binary eutectic benzil and m-nitroaniline system. The microcalorimetric measurements of the enthalpy of mixing give small and positive values, typically ~200 J mol(-1) for the equimolar mixture. The composition dependence of the glass transition temperature, T(g), is found to show a lar...

Journal: :Physical chemistry chemical physics : PCCP 2010
Mohammad Harati Jia Jia Kévin Giffard Kyle Pellarin Carly Hewson David A Love Woon Ming Lau Zhifeng Ding

Herein we report the one-pot electrodeposition of copper indium gallium diselenide, CuIn(1-x)Ga(x)Se(2) (CIGS), thin films as the p-type semiconductor in an ionic liquid medium consisting of choline chloride/urea eutectic mixture known as Reline. The thin films were characterized by scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy, X-ray photo...

2017
Oliver S Hammond Daniel T Bowron Karen J Edler

The nanostructure of a series of choline chloride/urea/water deep eutectic solvent mixtures was characterized across a wide hydration range by neutron total scattering and empirical potential structure refinement (EPSR). As the structure is significantly altered, even at low hydration levels, reporting the DES water content is important. However, the DES nanostructure is retained to a remarkabl...

2016
Cristian Vidal Joaquín García-Álvarez Alberto Hernán-Gómez Alan R. Kennedy Eva Hevia

Despite their enormous synthetic relevance, the use of polar organolithium and Grignard reagents is greatly limited by their requirements of low temperatures in order to control their reactivity as well as the need of dry organic solvents and inert atmosphere protocols to avoid their fast decomposition. Breaking new ground on the applications of these commodity organometallics in synthesis unde...

Journal: :Molecules 2016
Martina Capua Serena Perrone Filippo Maria Perna Paola Vitale Luigino Troisi Antonio Salomone Vito Capriati

A high-yield one-pot two-step synthesis of 2-aminoimidazoles (2-AI), exploiting an under-air heterocyclodehydration process between α-chloroketones and guanidine derivatives, and using deep eutectic solvents (DESs) as nonconventional, "green" and "innocent" reaction media, has been accomplished successfully. The combination of either glycerol or urea with choline chloride (ChCl) proved to be ef...

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