Journal of The European Ceramic Society
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#1Xiaojia Su (Southwest Jiaotong University)
#2Baotong Hu (Southwest Jiaotong University)
Last. Chunfeng Hu (Southwest Jiaotong University)H-Index: 6
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Abstract In this work, MoAlB samples for plasma exposure test were condensed by spark plasma sintering at 1200 °C for 10 minutes. Ablation resistance of MoAlB ceramic was investigated in a plasma torch facility for about 30 seconds at high temperature range of ∼1670-2550 °C, which provided a quasi-real hypersonic service environment. The results showed that the linear ablation rate was increased from 0 µm/s at ∼1670 °C to 86.4 µm/s at ∼2550 °C. At ∼1670 °C, the ablated surface of MoAlB ceramic w...
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#1S. Vorotilo (National University of Science and Technology)H-Index: 9
#2E. A. Levashov (National University of Science and Technology)H-Index: 14
Last. Anton S. Orekhov (National University of Science and Technology)H-Index: 13
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Abstract The macrokinetic features and phase and structure formation mechanisms are investigated in the Zr-Ta-Si-B system in the framework of the fractal theory of combustion. The reaction mechanisms are explored using ab initio grand potential modeling and Ellingham diagrams and then verified via direct in situ time-resolved XRD and quenching of combustion fronts in a copper block. The tendency of the Zr-TaSi-B system to form tantalum boride Ta3B4 and a transient tantalum silicide Ta5Si3 and re...
1 CitationsSource
#1Xiulei Wang (Huada: Beijing University of Chemical Technology)H-Index: 2
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Abstract This article is a detailed review of the measures to modify the high-temperature mechanical properties of silicon carbide ceramic matrix composites (SiC CMCs), namely toughness, high-temperature stability and wear resistance. Additionally, it briefly describes the common processing methods of the SiC CMCs and their application in the high-temperature field of aerospace. The advantages and disadvantages of various existing processing and molding methods for the SiC CMCs are also discusse...
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#1Xingmin LiuH-Index: 11
#2Hailong XuH-Index: 16
Last. Ralf RiedelH-Index: 78
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Abstract In this work, SiC nanowires and graphitic carbon (GC) including 2D reduced graphene oxide and graphene-liked ribbons modified polymer derived SiCN (SiC/GC-SiCN) porous ceramic monoliths were prepared via catalyst assisted single-source-precursor derived ceramic route. The inclusion of absorbents (e.g. graphitic carbon and SiC nanowires) significantly improved the electrical conductivity of the materials from 1.77 × 10-8 S/cm (pristine SiCN) to 0.56 S/cm. In turn, the electromagnetic int...
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#1Jun Tang (WHU: Wuhan University)H-Index: 6
#2Tao Cheng (WHU: Wuhan University)H-Index: 2
Last. Feng Ren (WHU: Wuhan University)H-Index: 34
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Abstract Developing long-lifetime bulk-form ceramic-based materials with high irradiation resistance is crucial for advanced nuclear systems. Here, we incorporated carbon nanotubes (CNTs) into yttria-stabilized zirconia (YSZ) and magnesia (MgO) nanocrystals to fabricate bulk YSZ-MgO-CNT nanocomposites with abundant ternary nanostructures by spark plasma sintering. To understand the role of tailored ternary nanostructure on irradiation, we investigated the microstructure and mechanical properties...
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#1Liu Zuodong (Xinyang Normal University)H-Index: 3
#2Ji Yumeng (Xinyang Normal University)
Last. Qiang-Shan Jing (Xinyang Normal University)H-Index: 11
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Abstract Raw SrF2 powders were synthesized by the chemical precipitation method, and the mean particle size was 58.48 nm. Er:SrF2 transparent ceramics were obtained by hot-pressed (HP) technique, and the effect of ErF3 levels on the transparency, microstructure, luminescence spectroscopic and microhardness were studied. The ratio of emission intensities R (Red/Green) increased with the ErF3 doping levels. The addition of ErF3 was found effectively to reduce grain size and has a positive effect o...
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#1Vitaly GurylevH-Index: 6
#2T.-P. Perng (NTHU: National Tsing Hua University)H-Index: 15
Abstract ZnO is an important material which has been widely applied in photodetector, catalyst, gas sensor, field emitter, etc. Yet, its inability to absorb visible light, poor charge transport, and low conductivity limit the application of these devices. Recently, it was discovered that introduction of defects such as oxygen and zinc vacancies into ZnO can effectively improve the existing properties or lead to new and unexpected yet highly desirable characteristics. Herein, we present a systema...
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#1X.C. Cai (Yanshan University)H-Index: 4
#2Ding Shuaijun (Yanshan University)H-Index: 1
Last. Tongde Shen (Yanshan University)H-Index: 32
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Abstract As a refractory transition-metal diboride, monolithic TiB2 oxidizes at temperatures below 400 °C. Here, we performed detailed microstructural investigations to study the low-temperature oxidation mechanism of monolithic TiB2. An anomalous rapid oxidation behavior is observed at ∼ 500 °C, where the oxidation rate is much higher than that at a higher temperature of 650 °C. The anomalous rapid oxidation behavior originates from an unreported bi-layer oxide scale consisting of outer homogen...
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#1Hao ZhangH-Index: 2
#2Min GeH-Index: 7
Last. Weigang ZhangH-Index: 17
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Abstract In this study, nanoscale composite SiC-ZrC ceramic fibres, derived from polyzirconocenecarbosilane (PZCS) via melt spinning, electron beam crosslinking, pyrolysis and sintering were investigated in detail. Compared with several commercial products of second-generation SiC fibres, the produced composite fibres exhibit improved thermal stability, mechanical properties and oxidation resistance. SiC grains in the fibre grew from 9.8 nm to 33.9 nm after annealing in an inert atmosphere at 18...
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#1Yihan Chen (CSU: Central South University)H-Index: 1
#2Zhaoke Chen (CSU: Central South University)H-Index: 18
Last. Xiang Xiong (CSU: Central South University)H-Index: 27
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Abstract The effects of thermal treatment on the Cansas-Ⅲ SiC fibers were investigated via heating at temperatures from 900 to 1700 ℃ for 1–5 h in argon atmosphere. The composition and morphology of the SiC fibers were characterized and the tensile strength of the SiC fiber bundles was analyzed via two-parameter Weibull distribution analysis. The results showed that the thermal treatment has negligible influence on the microstructure of the SiC fibers at temperatures ≤ 1100 ℃. At temperatures ≥ ...
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