Results 61 to 70 of about 337,491 (319)

Dry and wet "deposition" studies of the degradation of cement mortars

Materiales de Construccion, 1998
The reaction of portland cement mortars with SO2 gaseous pollutant and artificial 'acid rain' solution has been examined using laboratory exposure chambers, with realistic presentation rates of pollutants. The mortar were previously carbonated to produce
S. Martínez-Ramírez, G. E. Thompson
doaj   +1 more source

Influencia de la presión de cristalización y variación de volumen durante la formación de herrumbre en ambientes marino y continental-urbano: Factores críticos en la exfoliación

Revista de Metalurgia, 2020
Este artículo estudia la capa de óxido formada en acero al carbono expuesto a ambientes marinos naturales y urbano-continentales durante 50 años. La composición de la fase mineralógica de la capa de óxido se evaluó mediante difracción de rayos-X (DRX ...
David M. Bastidas, Jacob Ress, Ulises Martin, Juan Bosch, Angel La Iglesia, José M. Bastidas   +5 more
doaj   +1 more source

The hot corrosion of nickel-base disc alloys [PDF]

, 2011
The efficiency of a jet’s engines has a direct affect on its economic and environmental impact through the quantity of aviation fuel consumed and CO2 emitted.
Potter, Andrew
core  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Tannic acid compound as a corrosion inhibitor: film-forming characteristics and corrosion resistance

工程科学学报, 2019
Tannic acid (TA) is widely used to protect metals from corrosion because it is environmentally friendly and inexpensive. However, the single effect of TA used as corrosion inhibitor has been widely investigated and studies focusing on the corrosion ...
Tao FANG, Bo-wei ZHANG, Zhan ZHANG, Yi WANG, Guang-chun PENG, Kang HUANG, Tian-yi ZHANG   +6 more
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

The oxidation mechanisms of Pt and reactive elements modified AlCoCrFeNi2.1 eutectic high-entropy alloy at high temperature

Journal of Materials Research and Technology
AlCoCrFeNi2.1 eutectic high-entropy alloys (EHEAs) show great potential in high-temperature applications due to the dual-phase lamellar structure. In this work, the high-temperature oxidation behavior and scaling mechanisms of three AlCoCrFeNi2.1 EHEAs ...
Qinying Huang, Yuzhuo Li, Peng Zhang, Yingfei Yang, Shengfeng Zhou, Pan Ren, Qiwei Wang, Wei Li, Fuhui Wang   +8 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source