JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2025
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IF 6.2
Xingya Zhu,Wenting He,Yiqian Guo,Liangliang Wei,Dongrui Liu,Hongbo Guo,Hui Peng
Calcium-magnesium-alumina-silicate (CMAS) deposits significantly accelerate the degradation of thermal barrier coatings (TBCs) in advanced aeroengines, thereby posing a substantial threat to aviation safety. In this study, (Gd 0.2 Y 0.8 ) 3 Al 5 O 12 (GYAG)/YSZ double-ceramic-layer thermal barrier coatings (TBCs), comprising dense GYAG on top and columnar YSZ beneath, were fabricated via plasma spray-physical vapor deposition (PS-PVD) in a single-step process to mitigate CMAS attack. High-temperature exposure tests at 1250 °C demonstrated the excellent phase stability of GYAG coating and interface stability of GYAG/YSZ coating. The interactions between CMAS and GYAG/YSZ coatings were investigated. Results showed that CMAS melt infiltration was suppressed. GYAG coating reacted rapidly with CMAS to crystallize apatite, garnet and anorthite phases with high-melting-point. These crystalline phases are alternatively distributed and collectively inhibit CMAS infiltration. The doping of Gd in GYAG coating facilitated precipitation of apatite, which is crucial for CMAS resistance enhancement.
研究领域:
材料科学
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表面工程
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航空发动机
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高温材料
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涂层技术
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无机非金属材料
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Xiaopeng Hu,Sai Liu,Qing Liu,Yang Su,Junyao Wu,Zhihang Xie,Jinwei Guo,Wang Zhu
The service life of thermal barrier coatings (TBCs) in calcium magnesium aluminosilicate (CMAS) and molten salt environments has become a key factor in determining engine reliability and safety. The effect of interface roughness (bond coating surface roughness) on the CM (CMAS + molten salt (Na 2 SO 4 + NaCl + NaVO 3 )) corrosion resistance of electron beam physical vapor deposition (EB-PVD) TBCs is investigated. The addition of molten salts lowers the melting point of CM, leading to more severe destructive effects compared to single CMAS corrosion. Moreover, the 1200# specimen (Ra = 2.0 μm) exhibits the best resistance to CM corrosion. The adjustment of interface roughness significantly alters the microstructure of the top-ceramic coating and induces changes in crack patterns after CM corrosion. Therefore, appropriately reducing interface roughness is key to improving the isothermal CM corrosion resistance and high-temperature CM corrosion-induced thermal shock performance of TBCs.
研究领域:
材料科学
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腐蚀与防护
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 17
·6683-6687
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IF 3.069
Xiaohui Sun,Xianghui An,Sa Zhang,Zhongtao Li,Jing Zhang,Wenting Wu,Mingbo Wu
Modified g-C3N4 sheets (CNS) with a bandgap of 2.61 eV were fabricated through physical vapor deposition (PVD) of g-C3N4. During the PVD process, a series of gaseous derivatives derived from pristine g-C3N4 at 700 °C condense into CNS at low temperature (<400 °C). As a result, CNS still retains a typical semiconductor structure (bandgap of 2.61 eV), while at the same time, CN and O–H defect groups were introduced to its tri-s-triazine-based structure.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Jiexiang Ren,Song Chen,Yudong Hou,Xiaocong Deng,Lu Tian,Chao Ma,Sheng-chao Huang,Cuifen Lu
A bio-based reactive flame retardant (PVD) was synthesized using vanillin, phenethylamine, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). This study aimed to enhance epoxy resin's fire resistance and evaluate the strength of EP/PVD composites for eco-friendly specialized applications. The chemical structure of PVD was confirmed using Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The effect of PVD on the curing kinetics of EP was studied using non-isothermal differential scanning calorimetry (DSC). During combustion, PVD releases ∙PO 2 and ∙PO radicals, which capture the active ∙H and ∙OH radicals generated during the combustion of EP. This results in a significant quenching effect, thereby achieving flame retardancy. EP with 7.5 wt% PVD and 0.49 wt% phosphorus (EP/PVD-7.5) exhibited a V-0 rating in UL-94 vertical burning tests and a limiting oxygen index (LOI) of 32.4%. Additionally, compared to pure EP, EP/PVD-7.5 showed a 41.7% reduction in the peak heat-release rate during cone calorimetry tests. The dual-phase flame-retardant effect of PVD was confirmed by the analysis of the residual char and its pyrolysis behavior. Furthermore, EP/PVD exhibits superior mechanical properties and transparency compared to pure EP, indicating that PVD holds promise as a flame retardant for EP.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2022
·Vol. 20
·期 1
·1-18
·
IF 9.429
Chen Youlu,Chen Zuoguan,Duan Jianwei,Gui Liang,Li Huiyang,Liang Xiaoyu,Tian Xinxin,Liu Kaijing,Li Yongjun,Yang Jing
Peripheral vascular disease (PVD) is a common clinical manifestation of atherosclerosis. Vascular endothelial growth factor (VEGF) gene therapy is a promising approach for PVD treatment. However, due to single-gene therapy limitations and high H2O2 pathological microenvironment, VEGF gene therapy are not as expectations and its clinical application are limited. Synergistic effects of Nerve factors and vascular factors in angiogenesis have attracted attention in recent years. In this study, VEGF and nerve growth factor (NGF) genes co-delivery nanoparticles (VEGF/NGF-NPs) were prepared by using H2O2 responsive 6s-PLGA-Po-PEG as a carrier. 6s-PLGA-Po-PEG could react with H2O2 specifically due to the internal peroxalate bond. Angiogenic effects of VEGF/NGF-NPs has been evaluated in cells and hindlimb ischemia mice model. Results showed that VEGF/NGF-NPs promoted VEGF and NGF co-expression simultaneously, eliminated excessive H2O2, strengthened reactions between SH-SY5Ys and HUVECs, and finally enhanced migration, tube formation, proliferation and H2O2 damage resistance of HUVECs. VEGF/NGF-NPs also recovered blood perfusion, promoted the expression of VEGF, NGF, eNOS and NO, and enhanced vascular coverage of pericytes. Treatment effects of VEGF/NGF-NPs may related to VEGF/eNOS/NO pathway. Altogether, VEGF/NGF-NPs eliminated excessive H2O2 while achieving gene co-delivery, and promoted stable angiogenesis. It’s a promising way for PVD treatment by using VEGF/NGF-NPs.Graphical Abstract
研究领域:
生物医学工程
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分子生物学
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基因治疗
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血管医学
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产品关联
DOI
PubMed
高影响因子
CARBON
·
2017
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IF 6.337
Ke Wang,Ying Huang,Mingyue Wang,Meng Yu,Yade Zhu,Jinsong Wu
With the advent of flexible electronics, flexible secondary rechargeable batteries have attracted considerable attentions as a promising power source in the new generation of flexible electronics such as roll-up displays, smart electronics, and implantable medical devices . In this work, we report the fabrication of 3D NiCo 2 O 4 arrays on carbon cloth as a binder-free anode for sodium/lithium ion storage. Amorphous carbon layer is used to modify the surface of NiCo 2 O 4 arrays by physical vapor deposition (PVD). The electrochemical performance measurements demonstrate that the amorphous carbon layer can improve the electrochemical stability of NiCo 2 O 4 . The NiCo 2 O 4 @ C/carbon cloth electrode exhibits a high reversible capacity of 749.9 mAh g −1 , stable cycling with more than 535.47 mAh g −1 at 500 mA g −1 over 100 cycles and impressive rate capability (318 mAh g −1 at 5 A g −1 over 700 cycles) for SIBs and excellent electrochemical performance for LIBs (reversible capacity of 807.63 mAh g −1 were observed for 100 cycles).
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
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2026
·
IF 6
Chenyang Jing,Da Bi,Hao Yan,Yangyang Pan,Donald B. Dingwell,Wenjia Song
Airborne particles such as sand, dust, and volcanic ash pose a severe threat to the reliability of thermal barrier coatings (TBCs) in jet engines. Upon ingestion into engines, these silicate-rich particles melt and form deposits that undergo complex spreading and adhesion dynamics on coating surfaces, ultimately leading to coating degradation. To simplify the reproducibility and comparability of experimental studies synthetic calcium–magnesium–alumino–silicate (CMAS) particles are commonly employed as simulants. Here, high-temperature deposition experiments have revealed that partially molten droplets (containing solid inclusions), exhibit heterogeneous spreading morphologies beyond classical viscous flow. A compound droplet model integrating heat transfer and spreading dynamics has been developed to describe quantitatively the deposition behavior of such partially molten particles. A physics-informed machine learning model, trained on 105 experimental cases was developed and has demonstrated superior predictive performance, with support vector regression achieving the highest accuracy (R 2 ≈ 0.71, RMSE ≈ 0.13). This combined experimental–computational strategy establishes a robust predictive paradigm linking natural threats (sand, dust, volcanic ash) with CMAS simulants, providing mechanistic insights into and mitigation strategies for CMAS-related degradation to enhance the operational reliability of aeroengines.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）