Results 51 to 60 of about 19,814 (230)

The Effect of Demineralization on Coal Functional Group Pyrolysis: Rank‐Dependent Dual Mechanisms of Structural Reorganization and Mineral Catalysis

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Coal pyrolysis, as a key thermochemical conversion process, is significantly influenced by inherent minerals, yet their role across different coal ranks remains inadequately understood. This study investigates the effect of acid‐washing (demineralization) on the thermal decomposition of six functional groups (aliphatic C–H, aromatic C–H/C=C, C=
Zhiyuan Niu   +4 more
wiley   +1 more source

Prediction of Properties of Polymer Composite Formulations Using Ensemble Models With Feature Generation

open access: yesJournal of Applied Polymer Science, EarlyView.
This study develops an interpretable machine‐learning framework to predict multiple properties of polymer composites based on composition and processing variables. By combining ensemble models with composition‐based feature generation and SHAP‐based interpretation, the approach reveals composition‐property relationships and supports efficient multi ...
Dong Ryeol Shin, Sung Kwang Lee
wiley   +1 more source

Mullite Whiskers and Mullite-whisker Felt [PDF]

open access: yes, 1993
The Naval Surface Warfare Center has developed processes for the preparation of mullite (3(Al2O3)(dot)2(SiO2)) whiskers and mullite-whisker felt. Three patents on the technology were issued in 1990.
Haught, Deborah A., Talmy, Inna G.
core   +1 more source

Investigation of Microscopic Nonmetallic Inclusions in Powder Metallurgical High‐Speed Steels

open access: yessteel research international, EarlyView.
Methods for inclusion analysis are evaluated for suitability. Various powder metallurgical steels in different processing states are characterized. SEM/EDS data are further analyzed using analytical and statistical approaches. A thermodynamic method for determining inclusion phase composition is tested.
Manuel Schickbichler   +5 more
wiley   +1 more source

Multiphase composites obtained by sintering reaction of boehmite and zircon part I: Development and microstructural characterization [PDF]

open access: yesScience of Sintering, 2014
In this work, different composites (zircon-mullite, zirconia-mullite-zirconia, mullite-zirconia and alumina-zirconia-mullite) were developed by reactive sintering of a powder mixture of boehmite (AlOOH)) and zircon (ZrSiO)4.
Belhouchet H.   +5 more
doaj   +1 more source

Modeling the Thermal Properties of Hydrogen‐Based Direct Reduced Iron Using Computational Thermodynamics and Machine Learning

open access: yessteel research international, EarlyView.
Hydrogen‐based direct reduced iron (H‐DRI) melts differently from scrap and carbon‐bearing DRI. This work combines differential scanning calorimetry experiments, FactSage thermodynamics, and simple composition‐based regression to predict solidus, liquidus, heat capacity, and enthalpy for H‐DRI.
Ankur Agnihotri   +3 more
wiley   +1 more source

Study on synthesizing mullite with bauxite tailing

open access: yes矿业科学学报, 2016
To enhance the efficient utilization of bauxite tailings,the mullite was synthesized by bauxite tailings in molybdenum wire furnace at 1 550℃ and 1 650℃ for 4 h.The sintered samples were analyzed by X-ray diffraction(XRD),scanning electron microscopy(SEM)
Liu Dongfang   +5 more
doaj  

Agglomeration Behavior of Nonmetallic Particles on the Surface of Si‐Killed Liquid Steel Using HT‐CSLM: An In Situ Investigation

open access: yessteel research international, EarlyView.
The in situ agglomeration behavior of semisolid Al–silicate inclusions in Si‐killed steel is studied using high‐temperature confocal scanning laser microscopy. Particle motion and interparticle forces at the steel/argon interface are quantified and compared with a modified capillary interaction model.
Suwam Kumar   +4 more
wiley   +1 more source

Microstructure of metal matrix composites reinforced by ceramic microballoons [PDF]

open access: yes, 2012
Metal matrix composites reinforced by ceramic hollow microspheres were produced as special porous metals, called metal matrix syntactic foams (MMSFs).
Májlinger, Kornél   +1 more
core  

Effect of temperature and glass content on crystalline phases in porcelain sintered with recovered automotive glass

open access: yesHeliyon, 2023
In the pursuit of sustainable porcelain production, this research examines the potential of using recovered automotive glass as a substitute for traditional feldspar, specifically feldspar imported from Spain. Porcelain samples were sintered at different
A. Djemli   +8 more
doaj   +1 more source

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