Results 91 to 100 of about 51,341 (303)

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Розроблення електроіскрових покриттів на основі карбідосталей NbC-сталь Гадфільда [PDF]

, 2013
Досліджено електродні матеріали для електроіскрового легування сталевих деталей із керметів на основі карбіду ніобію зі зв’язкою із сталі Гадфільда. Електроди виготовляли просочуванням спечених каркасів NbC (відкрита пористість ~ 40 %) розплавом сталі ...
Криль, Я. А., Присяжнюк, П. М.   +1 more
core  

Investigating the Acid Failure of Aluminium Alloy in 2 M Hydrochloric Acid Using Vernonia amygdalina [PDF]

, 2012
The acid failure of aluminium alloy in 2 M hydrochloric acid solution in the presence of Vernonia amygdalina extract was investigated using gasometric technique. Aluminium alloy coupons of dimension 4 cm by 1 cm were immersed in test solutions of free
Ajayi, O. O., Omotosho, O. A.
core   +5 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

X-ray fluorescence surface contaminant analyzer: A feasibility study [PDF]

The bonding of liner material to the inner metal surfaces of solid rocket booster cases is adversely affected by minute amounts of impurities on the metal surface.
Eldridge, Hudson B.
core   +1 more source

Investigation of diesel generator shaft and bearing failures [PDF]

, 2004
A shaft failure in a 634 kW diesel generator after 4000 hours of operation required investigation, especially when similar sets began to show signs of excessive bearing housing wear.
Der Wilson W., ESDU 81012., ESDU Data Item 86028., ESDU Data Item 88008., ISO 1940.   +4 more
core   +1 more source

Triblock Polymer Engineering Enables Hydration‐Rich, High‐Performance, Fouling‐Resistant Interfaces

Advanced Functional Materials, EarlyView.
A molecularly engineered triblock polymer (PHZ) rapidly reorganizes into a hydration‐rich interfacial layer on diverse surfaces, strongly suppressing hydrophobic attraction and fouling. The triblock polymer provides robust energy and steric barriers to oily foulants, enabling high‐performance antifouling at ultralow dosage.
Chenyu Qiao, Ziqian Zhao, Yueying Huang, Yongxiang Sun, Genglin Li, Xuguang Song, Hongbo Zeng   +6 more
wiley   +1 more source

Effort of Rare Earth on High Temperature Thermoplastic of Medium Manganese Wear-resistant Steel

Teshugang
The high temperature mechanical properties of medium manganese wear-resistant steel with different rare earth content had been systematically studied by using Gleeble 3500 thermal simulation testing machine， SEM （scanning electron microscope）， OLS4100 ...
Li Min, Liu Hongbo, Che Xiaorui, Li Jie, Huang Jiankun, Zhang Caidong, Li ShuangJiang   +6 more
doaj  

Fractography of the high temperature hydrogen attack of a medium carbon steel [PDF]

Microscopic fracture processes were studied which are associated with hydrogen attack of a medium carbon steel in a well-controlled, high-temperature, high-purity hydrogen environment.
Melson, H. G., Moorhead, R. D.
core   +1 more source