Results 51 to 60 of about 9,993 (282)

Boron Carbide Reinforced Alumina Composites

, 1991
The mechanical properties of alumina have been successfully improved by adding isolated boron carbide particles of two different shapes. a KIc of 7.26±0.20 MPa·m1/2 for alumina-boron carbide whiskerlike composites and of 5.27±0.12 MPa·m1/2 alumina-boron ...
Ownby, P. D., Liu, Jenq
core   +1 more source

Unraveling the Electronic Structure of Silicon Vacancy Centers in 4H‐SiC

Advanced Functional Materials, EarlyView.
The electronic structure of the silicon vacancy in 4H‐SiC is probed via transient absorption spectroscopy, uncovering previously inaccessible excited states of the quartet and doublet spin channels, including the V2' transition. In combination with theoretical analysis, a comprehensive picture of the electronic structure is established.
Ali Tayefeh Younesi, Minh Tuan Luu, Christopher Linderälv, Vytautas Žalandauskas, Marianne Etzelmüller Bathen, Nguyen Tien Son, Takeshi Ohshima, Gergő Thiering, Lukas Razinkovas, Ronald Ulbricht   +9 more
wiley   +1 more source

Peltier effect during spark plasma sintering of boron carbide

Results in Physics, 2021
The influence of the Peltier thermoelectric effect on the evolution of temperature, density, and grain size heterogeneities during spark plasma sintering (SPS) of boron carbide is numerically evaluated.
Joseph Diatta, Elisa Torresani, Andrey Maximenko, Chris Haines, Darold Martin, Eugene Olevsky   +5 more
doaj   +1 more source

Tailoring the mechanical and tribological properties of B4C/a-C coatings by controlling the boron carbide content

, 2017
Boron carbide doped DLC coating can combine the property superiority of these two materials to create high-performance carbon-based coating, while the final property of the composite coating is strongly dependent on the proportion of coating components ...
Shang, Lunlin, Zhang, Guangan, Guangan Zhang, He, Dongqing, Zhibin Lu, Wang, Liping, Qunji Xue, Lu, Zhibin, Lunlin Shang, Xue, Qunji, Liping Wang, Dongqing He   +11 more
core   +1 more source

Unlocking Exceptional Strengthening in Aluminum Alloys via Interstitial Cottrell Atmosphere Formation

Advanced Functional Materials, EarlyView.
Cyclic unloading‐aging‐reloading micro‐tensile tests under various aging durations and temperatures, combined with comprehensive microstructural characterization reveal that the yield point phenomenon in Aluminum‐Carbon (Al‐C) thin films originates from Cottrell atmosphere formation.
Zion Lee, Hojang Kim, Yixuan Hu, Injong Oh, Tae‐Hyeok Kang, Hyeonbeen Noh, Yuhyun Park, Sunkun Choi, Pyuck‐Pa Choi, Kolan Madhav Reddy, Gi‐Dong Sim   +10 more
wiley   +1 more source

An experimental investigation of wire electrical discharge machining of hot-pressed boron carbide

Defence Technology, 2015
The present work discusses the experimental study on wire-cut electric discharge machining of hot-pressed boron carbide. The effects of machining parameters, such as pulse on time (TON), peak current (IP), flushing pressure (FP) and spark voltage on ...
Ravindranadh Bobbili, V. Madhu, A.K. Gogia   +2 more
doaj   +1 more source

Production of Melt-Spun Al-20Si-5Fe Alloy and Boron Carbide (B4C) Composite Material [PDF]

Archives of Metallurgy and Materials, 2018
In this study, metal matrix composite materials containing melt-spun Al-20Si-5Fe alloys and boron carbide was produced by high energy ball milling and then hot pressing at 200 MPa pressure and 450°C.
Fatih Kilicaslan M., Uzun A., E. Karakose   +2 more
doaj   +1 more source

Sustainable Electrochemical Synthesis of High‐Quality MXenes: Mechanistic Insights, Applications, Challenges, and Technological Prospects

Advanced Functional Materials, EarlyView.
Electrochemical etching provides an eco‐friendly alternative to hazardous HF methods for MXene production. This approach facilitates the selective isolation of the A‐layer from MAX phases with tunable surface terminations. Controlling voltage, electrolytes, temperature, and duration enables the optimal structural integrity. Nevertheless, existing scale
Jagdeep Singh, Madhusudhana M Devadiga, Santosh K. Tiwari, AS Dhaliwal, Gurpreet Singh Selopal   +4 more
wiley   +1 more source

Obtaining Boron Carbide and Nitride Matrix Nanocomposites for Neutron-Shielding and Therapy Applications

Condensed Matter, 2023
The very high capture cross-section of (epi)thermal neutrons by the boron isotope 10B makes elemental boron and its compounds and composites prospective for serving as materials intensively interacting with neutron irradiation.
Levan Chkhartishvili, Shio Makatsaria, Nika Gogolidze, Otar Tsagareishvili, Tamaz Batsikadze, Matlab Mirzayev, Shalva Kekutia, Vladimer Mikelashvili, Jano Markhulia, Tamaz Minashvili, Ketevan Davitadze, Natia Barbakadze, Tamar Dgebuadze, Ketevan Kochiashvili, Rusudan Tsiskarishvili, Roin Chedia   +15 more
doaj   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source