Results 71 to 80 of about 1,808 (225)

Revealing salt-expedited reduction mechanism for hollow silicon microsphere formation in bi-functional halide melts [PDF]

, 2018
The thermochemical reduction of silica to silicon using chemical reductants requires high temperature and has a high activation energy, which depends on the melting temperature of the reductant.
Kim, Jin Chul, Kim, Sungho, Kwak, Sang Kyu, Lee, Jeong Hyeon, Park, Soojin, Ryu, Jaegeon, Song, Gyujin, Wang, Chongmin   +7 more
core   +1 more source

Side Reactions/Changes in Lithium‐Ion Batteries: Mechanisms and Strategies for Creating Safer and Better Batteries

Advanced Materials, Volume 36, Issue 29, July 18, 2024.
Lithium‐ion batteries are considered the most competitive energy storage devices. A deep understanding of the reactions that cause changes in the battery's internal components is needed to build safer and better batteries. This review focuses on the processes of battery failures, with voltage and temperature as the underlying factors.
Hao Du, Yadong Wang, Yuqiong Kang, Yun Zhao, Yao Tian, Xianshu Wang, Yihong Tan, Zheng Liang, John Wozny, Tao Li, Dongsheng Ren, Li Wang, Xiangming He, Peitao Xiao, Eryang Mao, Naser Tavajohi, Feiyu Kang, Baohua Li   +17 more
wiley   +1 more source

Preparation of V-Al-Mo-Fe Intermediate Alloys by Controlled Aluminothermic Method

Metals
Vanadium (V), molybdenum (Mo), iron (Fe), and aluminum (Al) are crucial alloying elements in certain high-performance titanium alloys. Traditionally, these elements are added to titanium alloys in the form of binary master alloys such as V-Al, Mo-Al, and
Xiaoshu Wang, Jinfa Liao, Sui Xie, Baojun Zhao   +3 more
doaj   +1 more source

Finite element modeling of the aluminothermic welding with internal defects and experimental analysis

MATEC Web of Conferences, 2012
There are several hundreds aluminothermic welds and tenth of new welds being made daily on the Moroccan rail network. Although the aluminothermic welding technique is well proven, it is a critical safety component of the rail infrastructure.
Sidki F., Mouallif I., Mouallif Z., Benali A.   +3 more
doaj   +1 more source

Structural correlation and chemistry of molten NaF–ScF3 with dissolved metal aluminium: TG/DTA, XRD, NMR and molecular dynamics simulations

Rare Metals, Volume 43, Issue 7, Page 3356-3369, July 2024.
Graphical abstract AbstractFor the first time, the mechanism of metal aluminum dissolution in NaF–ScF3 eutectic melts and the chemical interaction between the constituents of this mixture have been thoroughly studied by a combination of differential thermal analysis (DTA), high temperature and solid‐state nuclear magnetic resonance (NMR), and X‐ray ...
Aydar Rakhmatullin, František Šimko, Didier Zanghi, Zuzana Netriová, Ilya B. Polovov, Ayrat Dimiev, Konstantin V. Maksimtsev, Catherine Bessada, Michal Korenko   +8 more
wiley   +1 more source

ENERGY SAVING TECHNOLOGY OF LIGATURES PRODUCTION ON THE BASIS OF MOLYBDENUM

Литьë и металлургия, 2014
Data on development of technology of the molybdenum-containing addition alloy production by method of aluminothermic restoration is provided in the article.
A. G. Slutsky, A. S. Kalinichenko, V. A. Sheynert   +2 more
doaj   +1 more source

Carbides and Nitrides of Zirconium and Hafnium. [PDF]

, 2019
Among transition metal carbides and nitrides, zirconium, and hafnium compounds are the most stable and have the highest melting temperatures. Here we review published data on phases and phase equilibria in Hf-Zr-C-N-O system, from experiment and ab ...
Hong, Qi-Jun, Navrotsky, Alexandra, Ushakov, Sergey V, van de Walle, Axel   +3 more
core   +1 more source

Multilevel carbon architecture of subnanoscopic silicon for fast‐charging high‐energy‐density lithium‐ion batteries

Carbon Energy, Volume 6, Issue 4, April 2024.
The C/VGSs@Si–C composite is fabricated by using a multilevel carbon architecture strategy on subnanoscopic Si. The strategy involves a highly developed three‐dimensional conductive and robust network integrating a subnanoscopic C skeleton, VGSs, and a carbon matrix, which enables the use of subnanoscale Si as a high‐energy‐density and fast‐charging ...
Meisheng Han, Yongbiao Mu, Lei Wei, Lin Zeng, Tianshou Zhao   +4 more
wiley   +1 more source

Реакции алюмотермического восстановления оксида хрома (III) в условиях автоволнового синтеза [PDF]

, 2009
Изучены реакции алюмотермического восстановления оксида хрома в условиях самораспространяющегося высокотемпературного синтеза при различных соотношениях реагентов.
Свидерский, А. К.
core  

Microwave-Assisted Preparation of High Entropy Alloys [PDF]

, 2015
Microwaves at the ISM (Industrial, Scientific and Medical, reserved internationally) frequency of 2450 or 5800 MHz have been used to prepare FeCoNiCuAl, FeCrNiTiAl and FeCoCrNiAl2.5 high entropy alloys by direct heating of pressed mixtures of metal ...
COLOMBINI, Elena, LEONELLI, Cristina, Paolo Veronesi, ROSA, Roberto, VERONESI, Paolo   +4 more
core   +2 more sources