Results 21 to 30 of about 2,367 (184)

Evaluation of mechanical behaviour and tensile failure analysis of 8 wt.% of nano B4C particles reinforced Al2214 alloy nano composites

Manufacturing Review, 2022
The microstructure and mechanical properties of Al2214-8 wt.% of 500 nm sized B4C particles reinforced composites were studied in this study. By using a liquid metallurgical process, composites containing 8 wt.% of B4C in Al2214 alloy were created.
Gopalan Kumar, Rajabathar Saravanan, Nagaral Madeva, Thippeswamy Hemnath Raju   +3 more
doaj   +1 more source

Microstructure and mechanical properties of b4c-tib2 composites reactive sintered from B4C + TiO2 precursors

Processing and Application of Ceramics, 2022
Ceramic composites consisting of a boron carbide (B4C) matrix and titanium diboride (TiB2) secondary phase were obtained by reactive sintering from boron carbide powder with 40 and 50wt.% of titanium dioxide (TiO2) additive. The same sintering temperature of 1850?C and pressure of 35MPa, but different sintering times from 15 to 60min, were ...
Švec Pavol, Čaplovič L’ubomír
openaire   +2 more sources

Fundamentals of Thermal Transport and Energy Conversion in Ultra‐High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties

Advanced Science, EarlyView.
This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei, Yue Li, Jiayu Xing, Yue Zhu, Ru Zhang, Huan Wu, Zihao Qin, Gang Pei, Man Li   +8 more
wiley   +1 more source

Impact of B4C reinforcement on the microstructure, wear, hardness, corrosion behavior, and radiation shielding properties of Al-40Sm2O3 hybrid composites

Nuclear Engineering and Technology
This study investigates the production and properties of hybrid Al-based composites reinforced with Sm2O3 and B4C. Al-40Sm2O3 powders were milled using vibratory grinding, and B4C was added in varying ratios of 1, 5, 9, 13, and 15 wt%. X-ray diffraction (
Seyit Çağlar
doaj   +1 more source

The Effect of B4C Reinforcement Ratio and Secondary Sintering Processes on Properties of Al6061 Matrix MMCP Materials

Gazi Üniversitesi Fen Bilimleri Dergisi, 2020
In this experimental study, the effect of reinforcement ratio and liquid phase sintering on properties of Al6061 matrix B4C particle reinforced Metal Matrix Composite (MMCP) materials produced by hot pressing active sintering method was investigated. Pre-
Türkan KIYMAZ, Yusuf ÖZÇATALBAŞ
doaj   +1 more source

Combustion of B4C/KNO3 binary pyrotechnic system

Defence Technology, 2021
Presented herein is an experimental study on the combustion of B4C/KNO3 binary pyrotechnic system. Combustion products were tested using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectrometer (EDS).
Jing-ran Xu, Chen-guang Yan, Chen-guang Zhu   +2 more
doaj   +1 more source

Unlocking Strength‐Toughness Dilemma in High‐Entropy Borides by Intragranular Microstructural Reconstruction

Advanced Science, EarlyView.
An extreme non‐equilibrium process combining heavy direct current sintering and TiSi2 addition is used to construct intragranular energy dissipation units within high‐entropy boride ceramics to overcome the strength‐toughness trade‐off. The resulting ceramic demonstrates attractive mechanical properties with a flexural strength of 887 MPa and a ...
Yingjun Liu, Yuhan Yao, Yufei Zu, Zhaofu Zhang, Yang Zhang, Hongfeng Dong, Nan Zhang, Wuhao Cao, Lehao Liu, Yuan Hu, Ruiheng An, Wenhu Li, Luyi Zhu, Taotao Ai   +13 more
wiley   +1 more source

Enhanced Mechanical Properties Via Boron‐Induced Multi‐Mechanism Strengthening in (NbTaTi1.5V)100‐xBx Refractory High Entropy Alloys

Advanced Science, EarlyView.
A trace amount of boron is introduced into NbTaTi1.5V RHEA, forming a finegrained BCC+TiO+TiB microstructure. The TiB phase generates numerous dislocations, strengthening the alloy. The alloy exhibits 3610 MPa compressive fracture strength and 1060 HV microhardness, while retaining 14.8% fracture strain.
Da Wu, Bo Li, Yuzhi Shi, Cong Li, Eryong Liu, Xiaohu Hou, Yimin Gao, Tao Wu, Pucun Bai, Chenyu Liang   +9 more
wiley   +1 more source

Investigation on mechanical properties of aluminium 7075 - boron carbide - coconut shell fl y ash reinforced hybrid metal matrix composites [PDF]

China Foundry, 2018
The present research work reports the fabrication and evaluation of the mechanical properties of hybrid aluminium matrix composites (HAMC). Aluminium 7075 (Al7075) alloy was reinforced with particles of boron carbide (B4C) and coconut shell fl y ash ...
*Balasubramani Subramaniam1, Balaji Natarajan2, Balasubramanian Kaliyaperumal2   +2 more
doaj   +1 more source

Stabilization of Cu Species in UiO‐66 Metal–Organic Framework for CO2‐to‐Methanol: Insights From Operando X‐ray and Electron Microscopy Studies

Small, EarlyView.
This study reveals how a zirconium‐based metal–organic framework (UiO‐66) stabilizes copper species during CO2 hydrogenation to methanol. Operando X‐ray spectroscopy, electron microscopy, and theory show that zinc promotes highly dispersed copper and suppresses particle growth, while the framework dynamically responds to reaction intermediates.
Anna Liutkova, Fabio André Peixoto Esteves, Marianela López Romero, Margareth S. Baidun, Anastasia Molokova, Davide Salusso, Kirill A. Lomachenko, Andrea Testino, Alexander A. Kolganov, Evgeny A. Pidko, Emiliya Poghosyan, Marco Ranocchiari   +11 more
wiley   +1 more source