Results 81 to 90 of about 48,017 (305)

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Facile Strategy for Synthesizing Non-Stoichiometric Monoclinic Structured Tungsten Trioxide (WO3−x) with Plasma Resonance Absorption and Enhanced Photocatalytic Activity

Nanomaterials, 2018
Oxygen vacancy defects play an important role in improving the light-capturing and photocatalytic activity of tungsten trioxide (WO3). However, the hydrogen treatment method that is commonly used to introduce oxygen vacancies is expensive and dangerous ...
Shihao Chen, Yang Xiao, Wei Xie, Yinhai Wang, Zhengfa Hu, Wei Zhang, Hui Zhao   +6 more
doaj   +1 more source

Self-consistent DFT+U+V study of oxygen vacancies in SrTiO₃ [PDF]

, 2020
Contradictory theoretical results for oxygen vacancies in SrTiO3 (STO) were often related to the peculiar properties of STO, which is a d(0) transition metal oxide with mixed ionic-covalent bonding.
Chiara Ricca, Iurii Timrov, Matteo Cococcioni, Ulrich Aschauer, Nicola Marzari, Timrov, Iurii, Cococcioni, Matteo, Ricca, Chiara, Marzari, Nicola, Aschauer, Ulrich   +9 more
core   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

Dual‐Site Synergistic Mechanism via Single‐Atom and Vacancy Drives Lattice Oxygen Activation in Layered Double Hydroxides

Advanced Science
Establishing the synergistic effect between single atoms and vacancies for the lattice oxygen mechanism (LOM) pathway of the oxygen evolution reaction (OER) is crucial for developing robust and efficient catalysts, yet remains unexplored.
Shixin Wu, Wenyu Lu, Shijun Zhao, Kai Zhao, Ning Yan, Liqiu Huang, Derun Li, Tao Jiang, Hengyi Wu, Feng Ren   +9 more
doaj   +1 more source

Strengthening the Synergy between Oxygen Vacancies in Electrocatalysts for Efficient Glycerol Electrooxidation

Defect-engineered bimetallic oxides exhibit high potential for the electrolysis of small organic molecules. However, the ambiguity in the relationship between the defect density and electrocatalytic performance makes it challenging to control the final ...
Yao, Xiangdong, Zeng, Jianrong, Chen, Jun, Han, Yun, Wu, Qilong, Song, Nan, Wu, Xiaofeng, Zhang, Dongdong, Yuan, Pei, Wu, Liyun, Huang, Keke, Zhang, Rongrong, Du, Aijun   +12 more
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Effect of oxygen vacancy modification on electrical properties of La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 high-entropy perovskite oxide films

AIP Advances
The epitaxial La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 (L5BO3) thin films with varying oxygen vacancies were prepared on (001) SrTiO3 substrates in this work. These thin films exhibit a high degree of crystallinity and prominent semiconductor characteristics. The
Xin Yuan, Sheung Mei Ng, PeiGen Li, JingMing Liang, Hon Fai Wong, ChuangShi Feng, Shuai Nan, HongQuan Song, Zhou Guan, FuXiang Zhang, Chi Wah Leung   +10 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Influence of carbon impurities and oxygen vacancies in Al2O3 film on Al2O3/GaN MOS capacitor characteristics

AIP Advances, 2018
Effects of carbon impurities and oxygen vacancies in Al2O3 film on the characteristics of Al2O3/GaN MOS capacitors were studied using the different atomic layer deposition (ALD) precursor and high-pressure water vapor annealing (HPWVA).
Mutsunori Uenuma, Kiyoshi Takahashi, Sho Sonehara, Yuta Tominaga, Yuta Fujimoto, Yasuaki Ishikawa, Yukiharu Uraoka   +6 more
doaj   +1 more source