Results 111 to 120 of about 891,231 (341)

Fabrication and microstructure of quartz ceramics with orderly–arranged carbon filler

Heliyon, 2018
Ceramics with tailored pore structure are showing potential applications in some special fields. For fabricating quartz ceramics with orderly–arranged carbon filler, a combination of 3D printing, vacuum suction filtration and sintering was explored to ...
Xiangming Li, Rui Li, Guojian Yuan, Mengyao Zheng, Zhen Meng, Jia Guo, Guangyou Zhou   +6 more
doaj   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Porous ceramics mimicking nature—preparation and properties of microstructures with unidirectionally oriented pores

Science and Technology of Advanced Materials, 2011
Porous ceramics with unidirectionally oriented pores have been prepared by various methods such as anodic oxidation, templating using wood, unidirectional solidification, extrusion, etc. The templating method directly replicates the porous microstructure
Kiyoshi Okada, Toshihiro Isobe, Ken-ichi Katsumata, Yoshikazu Kameshima, Akira Nakajima and Kenneth J D MacKenzie
doaj  

Preparation of porous carbides by reactive sintering

工程科学学报, 2015
Three porous carbide ceramics (Cr3C2, TiC and WC) were successfully prepared through a reactive sintering process by reducing their oxides (Cr2O3, TiO2 and WO3) with methane.
ZHANG Lei, PANG Xiao-lu, GAO Ke-wei
doaj   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

In situ formation of high-entropy carbide phase in porous SiBCN ceramic for enhanced high-temperature stability

Journal of Advanced Ceramics
Porous SiBCN ceramics exhibit great potential in high-tech structural and functional applications. However, nucleation-crystallization and carbothermal decomposition limit their use in high-temperature environments.
Zifeng Hu, Huijie Wang, Dong Su
doaj   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

An Overview on the Manufacture and Properties of Clay-Based Porous Ceramics for Water Filtration

Ceramics
This study explores the different techniques used to manufacture porous clay-based ceramics, examining their properties such as porosity, strength, permeability and filtration efficiency.
Iffat Qoudsiyyah Maury Njoya, Gisèle Laure Lecomte-Nana, Kassoum Barry, Dayirou Njoya, Youssef El Hafiane, Claire Peyratout   +5 more
doaj   +1 more source

Porous ceramic bodies for drug delivery

Journal of Materials Science: Materials in Medicine, 2000
An approach to the production of ceramic drug delivery devices is proposed. Two examples of possible ceramics are dealt with: hydroxyapatite weakly modifiable by living tissue and the bioinert alumina. The possibility to control the formed porosity was taken into consideration for both materials. The ratio between the acquired porosity and the quantity
Krajewski A, Ravaglioli A, Roncari E, Pinasco P, Montanari L   +4 more
openaire   +4 more sources