Results 31 to 40 of about 137,248 (219)

Correlation between orientation behavior of polyacrylonitrile precursor and structure of nascent fiber

Journal of Aeronautical Materials, 2019
Polyacrylonitrile (PAN) precursors with different orientation behaviors were prepared by changing the coagulation bath conditions such as concentration and temperature.
RUAN Ruyu, XU Dehua, LIANG Zi, XU Lianghua   +3 more
doaj   +1 more source

Single-source precursor derived high-entropy metal–carbide nanowires: Microstructure and growth evolution

Journal of Advanced Ceramics, 2023
In recent years, high-entropy metal carbides (HECs) have attracted significant attention due to their exceptional physical and chemical properties.
Junhao Zhao, Yulei Zhang, Hui Chen, Yanqin Fu, Qing Miao, Jiachen Meng, Jiachen Li   +6 more
doaj   +1 more source

Defect Evolution and Mechanical Performance of Fused Filament Fabrication‐Manufactured 17‐4PH Stainless Steel Revealed by X‐Ray Computed Tomography

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography reveals how process‐induced defects evolve from green to sintered states in Fused Filament Fabrication (FFF)‐manufactured 17‐4PH stainless steel. Internal porosity, weakest cross‐sections, and fracture locations show strong correlation with tensile performance, demonstrating the potential of computed tomography (CT)‐based ...
György Ledniczky, Márk Sárközi, Ibolya Zsoldos, Zoltán Weltsch   +3 more
wiley   +1 more source

Tailoring ablation resistance of (Hf,Zr,Ta)C coatings above 2000 °C: Critical role of Ta content

Journal of Advanced Ceramics
Multicomponent (Hf,Zr,Ta)C ceramics are promising candidates for ablation-resistant coating materials applied in ultrahigh-temperature environments. However, the influence of compositional variations on their ablation behavior remains insufficiently ...
Jianhua Zhang, Yanqin Fu, Junshuai Lv, Junhao Zhao, Sen Yang, Pei Wang, Jie Xu, Tao Li, Yulei Zhang   +8 more
doaj   +1 more source

Active Corrosion Protection of Sintered AA7075 Aluminum Alloy via Mn Powder Addition

Advanced Engineering Materials, EarlyView.
AA7075 containing Mn‐rich particles is fabricated via spark plasma sintering using AA7075 and Mn powders. Corrosion resistance is evaluated through dip‐and‐dry tests using 0.1 M NaCl (pH 6.0), and mass loss decreases with increasing Mn addition. Mn‐rich particles function as a source of Mn ions, and formation of Mn‐accumulation films on Cu‐containing ...
Ko Ebina, Masashi Nishimoto, Izumi Muto
wiley   +1 more source

Andic oxidation of high-modulus carbon fibers in sulfuric acid under different electric fields

Cailiao gongcheng
The inert surface of high-modulus carbon fiber leads to the weak interface between it and the resin matrix， which limits the performance of high-modulus carbon fiber composite in many application scenarios.
XIAO Jing, TIAN Siyuan, ZHOU Hang, WANG Yu, XU Lianghua   +4 more
doaj   +1 more source

Additive Manufacturing of Alumina‐Reinforced Elastomers

Advanced Engineering Materials, EarlyView.
Vat‐photopolymerized elastomers reinforced with platelet‐shaped alumina exhibited preferential orientation, reduced porosity, and significantly enhanced mechanical performance. A 3 wt% platelet loading increased tensile strength from 12.4 to 45.7 MPa, highlighting the critical role of filler morphology in elastomeric VPP composites.
Majid Barzegar Keyvani, Zongwen Fu, Robert Göstl, Hamed Shokri, Carmine Putignano, Gianluca Percoco, Bilal Gökce   +6 more
wiley   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

Comparison of microstructural evolution differences during dry-jet wet spinning and wet spinning for polyacrylonitrile precursor fiber

Scientific Reports
This study compared the microstructural evolution of polyacrylonitrile (PAN) fibers, which serve as precursors for carbon fibers, during both dry-jet wet spinning and wet spinning processes.
Jiping Wang, Xiaoqiang Ji, Xingfeng Liao, Yang Chen, Hongyan Song, Weisong Zhang   +5 more
doaj   +1 more source

Influence of carbon fiber surface oxygen- containing functional groups on interfacial properties of composites

Cailiao gongcheng
The interfacial structure of carbon fiber-reinforced polymer （CFRP） is crucial to the performance of composites， which represents a fundamental aspect of composite materials science research. The research on carbon fiber surface treatment is an important
TIAN Siyuan, ZHANG Xubo, WANG Yihao, GAO Aijun, XU Lianghua   +4 more
doaj   +1 more source