Results 71 to 80 of about 10,371 (264)

The Reduction of Group 6–8 Transition Metal Oxides with Hydrogen—From Ore Smelting to Reaction Pathways#

European Journal of Inorganic Chemistry, Volume 28, Issue 30, October 22, 2025.
As the reduction of transition metal oxides by coal poses a significant climate risk, the use of alternative reducing agents such as hydrogen is becoming increasingly important. This review summarizes the current knowledge of the reduction pathways of transition metal oxides from groups 6 to 8.
Michael Häger, Simon Keilholz, Holger Kohlmann   +2 more
wiley   +1 more source

Low temperature vaporisation of Cr from fluoride flux reacted at 1350 °C with Al–Cr–Fe powder: Thermochemical analysis of gas phase reactions and nano-strand formation

Journal of Materials Research and Technology
The submerged arc welding (SAW) process is complex because multi-phase reactions occur simultaneously across a large temperature interval from 2500 °C in the arc cavity, down to the weld pool liquidus temperare at the slag-weld pool interface.
Theresa Coetsee, Frederik Johannes De Bruin   +1 more
doaj   +1 more source

Nine percent nickel steel heavy forging weld repair study [PDF]

The feasibility of making weld repairs on heavy section 9% nickel steel forgings such as those being manufactured for the National Transonic Facility fan disk and fan drive shaft components was evaluated.
Berry, R. F., Jr., Brooks, T. G., Gerringer, A. H., Young, C. P., Jr.   +3 more
core   +1 more source

Development Status and Future Prospects of Hydrogen Energy Technology: Production, Storage, and Cost Analysis

Advanced Energy and Sustainability Research, Volume 6, Issue 10, October 2025.
Hydrogen is an energy carrier, produced from renewable and nonrenewable resources. It can be stored in a variety of materials and transported to distant locations. This article reviews progress in hydrogen technology by looking at environmental and economic impact, cost analysis, and policy support at government level as way forward for bringing it to ...
Xuexue Pan, Houhua Zhou, Dinmukhambet Baimbetov, Samal Syrlybekkyzy, Berik Bakhytzhanovich Akhmetov, Qamar Abbas   +5 more
wiley   +1 more source

Waste-based consumable for hardfacing by welding: a look from the Circular Economy

Dyna
In the present work, the obtaining of a consumable for the restore parts by welding from the perspective of the circular economy is addressed, using industrial solid residuals (slag from steel production, graphite from fragments of electrodes of arc ...
Azucena Elizabeth Bernal-Gutiérrez, Carmen Isabel Ulloa-Méndez, Rodolfo Najarro-Quintero, Amado Cruz-Crespo, Lorenzo Perdomo-González, Alejandro Duffus-Scott   +5 more
doaj   +1 more source

Transforming submerged-arc welding slags into magnetic glass-ceramics

International Journal of Sustainable Engineering, 2016
AbstractSubmerged-arc welding slag (SAWS) and rice husk (RH) wastes represent two particularly abundant metallurgical and agricultural wastes. This work focusses on the feasibility of SAWS, together with glass cullet and RHs, to develop lightweight porous glass–ceramics that could be useful for technical purposes. Effects of temperatures and amounts of
A. A. Francis, M. K. Abdel Rahman
openaire   +1 more source

Моделирование процессов межфазного взаимодействия при электродуговой сварке и наплавке под флюсом [PDF]

, 2011
Показано, що для оцінки металургійних властивостей флюсів при електродуговому зварюванні у більшості моделей обмежуються розглядом реакції шлак-метал, що суперечить фізичній моделі електродугового зварювання під флюсом.

core  

Computational Thermodynamics and Kinetics in Materials Modelling and Simulations [PDF]

, 2007
Over the past two decades, Computational Thermodynamics and Kinetics have been tremendously contributed to materials modeling and simulations and the demands on quantitative conceptual design and processing of various advanced materials arisen from ...
Agren, John, Chen, Qing, Engström, Anders, Hillert, Mats, Höglund, Lars, Shi, Ping-Fang, Sundman, Bo   +6 more
core   +2 more sources

A Review of the Use of Chemical Stabilisation Methods for Lithium‐Ion Batteries

Battery Energy, Volume 4, Issue 5, September 2025.
The review reveals that while chemical stabilisation techniques for recycling EOL LIBs are widely used, many studies overlook safety risks, focusing on quick, low‐cost methods. Only a few studies address the associated hazards, highlighting the need for safer, well‐understood stabilisation processes in battery recycling. ABSTRACT The increasing amounts
Mark D. Williams‐Wynn, Marcin H. Durski   +1 more
wiley   +1 more source

STUDENT WELDING SKILL COMPETITION DEVELOPMENT MODEL WITH KKNI AND COMPETENCY CERTIFICATION APPROACH IN VOCATIONAL SCHOOL [PDF]

, 2014
This study aims to (1) obtain a model of the organization of the Student Welding Skill Competition, (2) determine the organization of the Student Welding Skill Competition model implementation, (3) determine the management of the Student Welding Skill ...
Arif, Marwanto, Putut, Hargiyarto, Riswan Dwi, Djatmiko   +2 more
core