Results 91 to 100 of about 6,438 (224)

Thermodynamics and Kinetics of Ammonia‐Based Reduction of Natural Hematite

steel research international, EarlyView.
Ammonia is investigated as a carbon‐free hydrogen carrier for reducing natural hematite into metallic iron. Higher temperature and smaller particle size promote faster reduction, while ammonia dissociation generates hydrogen that indirectly drives the reduction reaction. At 850 °C, high reduction degrees and porous metallic iron structures are achieved,
Medard Turyasingura, Basit Ali, Michael Lubwama, Peter Wilberforce Olupot, Marcel A. J. Somers   +4 more
wiley   +1 more source

PECULIARITIES OF METALLOGRAPHIC RESEARCHES OF STRUCTURE OF CAST METAL FROM WASTE OF HIGH-SPEED STEEL P6M5

Литьë и металлургия, 2014
Techniques metallographic researches of structure and definition of size of grain of tool steels are offered. The structure of the fast-cutting steel received by a method electroslag remelting from a waste of tool manufacture is investigated.
A. L. Valko, P. I. Papkovsky, S. P. Rudenko, L. R. Dudetskaya   +3 more
doaj  

Development of a wide field of view X‐ray imaging detector and its application in X‐ray multi‐scale imaging

Journal of Synchrotron Radiation, EarlyView.
A wide field of view X‐ray imaging detector has been developed, and applied to wide‐range X‐ray multi‐scale imaging to visualize a relatively large object from its entire structure to the cellular level.A wide field of view X‐ray imaging detector with an effective field of view of more than 90 mm has been developed.
Masato Hoshino, Kentaro Uesugi
wiley   +1 more source

The Role of Nano-TiO2 Lubricating Fluid on the Hot Rolled Surface and Metallographic Structure of SS41 Steel. [PDF]

Nanomaterials (Basel), 2018
Meng Y, Sun J, Wu P, Dong C, Yan X.
europepmc   +1 more source

New Comprehensive Approach to Mathematical Modeling of Metallographic Images of Tool Structures

Journal of Mechanical Engineering, 2019
To increase the operational durability of tools in production and operation, this paper proposes an integrated approach for processing metallographic images of tool structures at various stages of their life cycle. It is based on the use of the Thixomet Pro software and a specially developed optical-mathematical method, which supplements standard ...
openaire   +3 more sources

Sodium Diclofenac‐Loaded Drug Delivery Microspheres: Impact on Calcium Hydroxide Paste Properties and Biological Response

Australian Endodontic Journal, EarlyView.
ABSTRACT This study evaluated whether the incorporation of sodium diclofenac‐loaded microspheres into a calcium hydroxide paste enhances antibiofilm activity while maintaining physicochemical properties and biocompatibility. Calcium hydroxide paste, calcium hydroxide combined with sodium diclofenac, and calcium hydroxide containing sodium diclofenac ...
João Vitor Oliveira de Amorim, Murilo Priori Alcalde, Leonardo Cabau, Rodrigo Ricci Vivan, Paulo Henrique Weckwerth, Marco Antonio Hungaro Duarte, Guilherme Ferreira da Silva   +6 more
wiley   +1 more source

Experimental Study on the Fatigue Behavior of Ti‐6Al‐4 V Bolted Joints Containing Burrs

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT One‐way assembly accelerates aerospace manufacturing operations but risks leaving drilling burrs within mechanical joints. The detrimental impact of burrs on fatigue strength is widely recognized in the literature, but the mechanisms driving this “knock‐down” remain unclear. This investigation focused on mechanically fastened Ti‐6Al‐4 V single‐
Santiago Frutos Taravillo, Eric Paroissien, Yann Landon, Sébastien Schwartz, Baptiste Josuan, Mathieu Fressinet, Clément Chirol   +6 more
wiley   +1 more source

Inconel 740H Prepared by Additive Manufacturing: Microstructure and Mechanical Properties

Metals
An Inconel 740H nickel-based alloy was fabricated via wire arc additive manufacturing. The as-welded and heat-treated samples were analyzed to investigate their phase composition, microstructure, crystal structure, and mechanical properties.
Ruizhang Hu, Wenqing Li, Chun Guo, Guangcan Huang, Xinyu Zhang, Qingcheng Lin   +5 more
doaj   +1 more source

Growth and Overfishing Indicators Applied to the Protandrous Hermaphrodite Fat Snook (Centropomus parallelus) in the South Atlantic

Fisheries Management and Ecology, EarlyView.
ABSTRACT The fat snook Centropomus parallelus is a protandrous hermaphrodite teleost of artisanal and recreational value in the South Atlantic, vulnerable to fishing pressure and size‐selective gears. We evaluated exploitation status using size and age based overfishing indicators from recreational fishing championships and artisanal landings along the
Julia Maria Maccari, Matheus Oliveira Freitas, Domingos Garrone‐Neto, Pietro Moro, Vinicius Abilhoa   +4 more
wiley   +1 more source

Failure Analysis for Teeth Broken of a Gearbox

Jixie chuandong, 2020
For the phenomenon of broken teeth in the transmission， the causes are analyzed. The gear raw materials chemical composition， non-metallic inclusions， heat treatment hardness， carburized layer thickness， metallographic structure are checked.
Donghai Gao
doaj