Results 51 to 60 of about 54,335 (262)

Исследование микроструктуры безобжиговых периклазоуглеродистых огнеупоров при использовании в качестве заполнителя различного вида периклаза [PDF]

, 1992
У статті представлено результати досліджень мікроструктури периклазовуглецевих зразків, у яких в якості наповнювача використовували різні види периклазу.
A Li, AH Ellingboe, AR Ayres, B Kraft, BM Moerschbacher, E Ziegler, E Ziegler, EG Cosio, G Kogel, G Kogel, G Lazarovits, H Kessmann, H Oku, HH Flor, I Apostol, IMJ Schottens-Toma, JA Callow, KH Kogel, M Hiramatsu, MA Stumpf, MC Heath, MC Heath, MC Heath, N Doke, N Doke, NA Garas, P Kjellbom, PJGM Wit, PJGM Wit, PJMG Wit, R Tiburzy, S Ouchi, T Shiraishi, TL Peever, WR Bushnell, Y Yamamoto   +35 more
core   +1 more source

Grain Boundary Space Charge Engineering of Solid Oxide Electrolytes: Model Thin Film Study

Advanced Functional Materials, EarlyView.
This study demonstrates unprecedented control of grain boundary electrical properties in solid electrolytes. Selective diffusion of cations through grain boundaries in thin films enables 12 orders of magnitude variation in ionic resistance, proving that systematic chemical modification of grain boundary electrical properties is feasible.
Thomas Defferriere, Yong Beom Kim, Colin Gilgenbach, James M. LeBeau, WooChul Jung, Harry L. Tuller   +5 more
wiley   +1 more source

Improved magnesia for thermal control coatings [PDF]

, 1972
Formation of radiation-generated color centers using single crystals of magnesium oxide is discussed. Crystal structure of magnesium oxide is described.
Berggren, C. C., Levin, H., Peffley, W. M.   +2 more
core   +1 more source

Porous Zirconia/Magnesia Ceramics Support Osteogenic Potential In Vitro

Materials, 2021
Porous zirconia (ZrO2), magnesia (MgO) and zirconia/magnesia (ZrO2/MgO) ceramics were synthesised by sintering and designated as ZrO2(100), ZrO2(75)MgO(25), ZrO2(50)MgO(50), ZrO2(25)MgO(75), MgO(100) based on their composition.
O. Prymak, Lida E Vagiaki, A. Buyakov, S. Kulkov, M. Epple, M. Chatzinikolaidou   +5 more
semanticscholar   +1 more source

Iron and Nickel Substituted Perovskite Cobaltites for Sustainable Oxygen Evolving Anodes in Alkaline Environment

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Perovskite oxide catalysts with reduced Co content, substituted by Fe and Ni, are synthesized and studied for their activity in the oxygen evolution reaction in alkaline media. An increase in the intrinsic catalytic activity (obtained by the (RctCdl)−1 product) of the base material (Ba0.5Gd0.8La0.7Co2O6‐δ) is seen for an as high as 70 % substitution of
Henrik Petlund, Alaa Faid, Junjie Zhu, Anuj Pokle, Truls Norby, Svein Sunde, Athanasios Chatzitakis   +6 more
wiley   +1 more source

Readily fiberizable glasses having a high modulus of elasticity [PDF]

, 1970
New glass compositions yield composites having higher moduli of elasticity and specific moduli of elasticity than commercially available glasses. Over a reasonable temperature range the glasses have a viscosity of about 20,000 poises.
Bacon, J. F.
core   +1 more source

Solid-state metathesis reactions under pressure: A rapid route to crystalline gallium nitride [PDF]

, 1998
High pressure chemistry has traditionally involved applying pressure and increasing temperature until conditions become thermodynamically favorable for phase transitions or reactions to occur.
Heath, James R., Kaner, Richard B., Kim, Sang-Ho, Nicol, Malcolm, Rao, Lin, Rose, Garry A., Wallace, Charles H.   +6 more
core   +1 more source

Evaluating Plasma Torches as a Low‐Decarburization Preheating Method for MgO–C Refractory Linings

steel research international, EarlyView.
This study evaluates direct current (DC) plasma torches using nitrogen as an alternative preheating method for magnesia‐carbon (MgO–C) refractory‐lined ladles. Full‐scale trials at 0.7 and 1.5 MW are compared to conventional gas burner. Plasma‐heated samples show lower decarburization and improved surface integrity due to partial sintering and reduced ...
Marcus Holmström, Alvaro Rubio Ordoñez, Roberto Caballero Carlon, Björn Glaser   +3 more
wiley   +1 more source

Effect of Resin Coating on Dentin Bond Strength Under Immediate and Delayed Cementation Protocols

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This study aimed to evaluate the effects of resin coatings on bond strength using immediate and delayed cementation protocols. Materials and Methods One hundred twenty dentin specimens were assigned to four groups: Noncoated, TK–100B (a novel single‐bottle adhesive), Hybrid Coat II, and Clearfil SE bond 2. The specimens of the latter
Rena Takahashi, Siqi Zeng, Yuna Kanamori, Shin Rozan, Yasushi Shimada   +4 more
wiley   +1 more source

Dissolution of Magnesia in Silicate Melts and Diffusivity Determination from CLSM Studies

Applied Sciences, 2023
Magnesia is one of the vital and extensively used refractory components. In this study, the dissolution of magnesia is investigated at 1450, 1500, and 1550 °C in three silicate slags in the CaO–Al2O3–SiO2–MgO system using high-temperature confocal laser ...
Burhanuddin, Harald Harmuth
doaj   +1 more source