Article
Materials Science, Ceramics
Bo Wang, Fan Zhang, Jianjie Hao, Ping He, Wei Shi, Yi Tan, Jiayan Li
Summary: SiC coatings reinforced with SiC nanowires were prepared on C/SiC composites. The introduction of SiC nanowires effectively improved the interface bonding strength, enhancing the thermal cycling and mechanical properties of the coating.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Xinfa Tian, Hejun Li, Li Yang, Xiaohong Shi, Hongjiao Lin, Yangyang Su
Summary: By introducing SiC nanowires and a multilayered structure, modified C/C composites were prepared as SiC nanowires reinforced C/(PyC-SiC)(n) (SM-CS) composites, achieving over 99.9% electromagnetic wave shielding effectiveness. With an increase in the number of preparation cycles, the electromagnetic shielding effectiveness, thermal conductivity, and thermal diffusivity of the composites showed continuous improvement.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Hanchun Ma, Qiang Miao, Wenping Liang, Yangyang Liu, Hao Lin, Hairui Ma, Shiwei Zuo, Lin Xue
Summary: Y2O3 modified ZrB2-SiC coatings fabricated on C/C composites by atmospheric plasma spraying demonstrated excellent oxidation resistance and thermal stability at high temperatures. The presence of Y2O3 effectively inhibited the phase transition of ZrO2, preventing cracks caused by volume expansion of the coating. The ceramic phases Y2SiO5, Y2Si2O7, and ZrSiO4 reduced the volatilization of SiO2, contributing to the overall protective performance of the coatings.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Tao Li, Yulei Zhang, Jian Zhang, Yanqin Fu, Jie Li
Summary: A SiO2-SiC reticulated layer with SiC nanowires was pre-prepared on C/C composites to improve oxidation resistance and alleviate siliconization erosion during SiC coating preparation, resulting in a compact and homogeneous SiC coating.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Guanghui Feng, Hejun Li, Xiyuan Yao, Lei Chen, Yulan Yu, Hanhui Wang, Miaomiao Chen
Summary: The ablation behavior of ZrC and ZrO2 coatings on SiC-coated carbon/carbon composites was studied under different heat fluxes, demonstrating that ZrO2 coating exhibited denser oxide layer and lower mass consumption compared to ZrC. The differences were attributed to higher surface temperature and lower melting point of ZrO2 coating, leading to easier sintering during ablation.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Tao Li, Yulei Zhang, Yanqin Fu, Jia Sun, Jie Li
Summary: The use of a pyrolytic carbon (PyC) coating prior to the fabrication of a silicon carbide (SiC) coating on carbon/carbon (C/C) composites helps to mitigate the negative effects of siliconization erosion, leading to an increase in flexural strength retention and better oxidation resistance. The presence of PyC coating allows for the fabrication of a compact SiC coating without silicon phase, resulting in improved performance under dynamic and static oxidation conditions at different temperatures.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Xinfa Tian, Hejun Li, Xiaohong Shi, Hongjiao Lin, Ningning Yan, Tao Feng
Summary: SiC nanowires reinforced C/(PyC-SiC)(n) multilayered matrix composites (SM-CS) were prepared using a combination of sol-gel and chemical vapor infiltration (CVI) methods. The multilayered structure, with an outer PyC layer designed to reduce gas supersaturation, allowed for the in-situ formation of tubular SiC nanowires on the surface. The increase in maximum force of SM-CS composites with the number of preparation cycles was attributed to the multiscale reinforcing system of the (PyC-SiC)(n) multilayered structure and SiC nanowires.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Haozhong Lv, Min Ge, Hao Zhang, Huifeng Zhang, Xiaoming Sun, Shouquan Yu, Weigang Zhang
Summary: By doping TaB2 into SiC ceramics, the oxidation resistance of SiC at high temperatures can be effectively improved. It was found that even a small proportion of TaB2 addition can significantly reduce the oxidation degree of SiC. The transformation of Ta2O5 in the oxide layer plays a crucial role in the oxidation resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Aolin Xie, Bei Zhang, Yicheng Ge, Ke Peng, Ping Xu, Xiaodong Wang, Zhirong Feng, Maozhong Yi, Zhe Zhou
Summary: To maintain the thermal stability of SiC nanowires during the fabrication process, carbon and SiC double protective layers were applied. SiC nanowires with double protective layers were used to toughen SiC coating through pack cementation. The introduction of double protective layers increased the fracture toughness of the SiC coating by 88.4%. The coating exhibited good thermal stability and resistance to thermal shock. The energy of crack propagation was dissipated by the SiC nanowires, leading to enhanced fracture toughness.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Jiahao Liao, Lixia Yang, Zhaofeng Chen, Tianru Guan, Tianlong Liu
Summary: Thermal cycling has an inevitable impact on the microstructure and mechanical properties of composites due to differences in thermal expansion coefficients. This study investigates the evolution of the microstructure and in-plane compressive properties of C-f/SiC-Al composites after thermal cycles at different temperature differences. The residual thermal stress in each component of the composites after thermal cycling is also analyzed. The results demonstrate that the accumulation of residual stress, along with interface debonding and microcracks, affects the in-plane compressive strength of the composites.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Ceramics
Lei Zhou, Qiangang Fu, Dou Hu, Yalong Wei, Mingde Tong, Jiaping Zhang
Summary: The GSI-SiC-Si coating showed lower roughness, better mechanical and anti-oxidation properties compared to the PC-SiC-Si coating. It could effectively protect C/C composites under high temperatures for an extended period without weight loss.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Bo Wang, Jiayan Li, Fan Zhang, Ping He, Wei Shi, Yi Tan
Summary: To reduce delamination or spallation of the Si layer during thermal cycles and enhance its oxidation resistance, a SiC-nanowire-reinforced Si layer (SiCnws-Si layer) was prepared on carbon/silicon carbide (C/SiC) composites using chemical vapor reaction and atmospheric plasma spray (APS). The introduction of SiC nanowires improved the bonding strength, toughness, and thermal stress relief of the Si layer. Results showed that the SiCnws-Si-coated C/SiC composites had lower weight loss (8.3%-60.9%) than Si layer after 12 thermal cycles between room temperature and 1673 K, and the tensile strength of the SiCnws-Si-coated C/SiC composites exceeded 3.9 MPa due to the bridging effect of SiC nanowires on the interface.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Jian Zhang, Yulei Zhang, Yanqin Fu, Xiaofei Zhu, Ruicong Chen
Summary: The SiC/HfC coating with multi-layer alternating structure prepared on C/C composites by LPCVD showed improved ablation resistance under ultra-high temperature environments, attributed to the formation of Hf-Si-O sticky glass phase and the multi-layer structure.
Article
Materials Science, Ceramics
Xinfa Tian, Xiaohong Shi, Li Yang, Hejun Li, Hongjiao Lin
Summary: The modified precursor infiltration pyrolysis (PIP) method was used to prepare an integrated doped ceramic matrix and coating with SiC nanowires, resulting in a composite with improved bonding strength and ablation resistance. The integration of the coating and matrix enabled the formation of a continuous oxide layer in the ablation process, effectively blocking oxygen and heat. This systematic improvement led to significantly lower mass and linear ablation rates compared to traditional composites.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xizhi Fan, Wenzhi Huang, Weiguo Mao, Zhe Zhou, Long Zhang, Xin Zhou
Summary: This study deposited monolayer coatings of BSAS, Yb2SiO5, and Y2SiO5 on C/SiC composites using atmospheric plasma spraying (APS) and investigated their thermal, chemical, microstructural properties, bond stability, and oxidation protection. The results showed that the monolayer coatings effectively improved the oxidation resistance of the composites. Among the tested coatings, the Y2SiO5 coating exhibited excellent mechanical properties and a compact structure, resulting in the highest bond stability and best protection.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Wei Xie, Qiangang Fu, Chunyu Cheng, Guangpeng Zhang, Ningning Yan, Zhaowei Wang
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Ceramics
Ningning Yan, Qiangang Fu, Kun Li, Dou Hu, Wei Xie, Weiyan Wang, Yuyu Zhang, Lei Zhuang, Lei Zhou, Jiaping Zhang, Xiaohong Shi
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Chemistry, Physical
Kun Li, Ni Li, Ningning Yan, Tiyuan Wang, Yutai Zhang, Qiang Song, Hejun Li
APPLIED SURFACE SCIENCE
(2020)
Article
Materials Science, Ceramics
Wei Xie, Qiangang Fu, Chunyu Cheng, Ningning Yan
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Ceramics
Ningning Yan, Qiangang Fu, Yuyu Zhang, Kun Li, Wei Xie, Jiaping Zhang, Lei Zhuang, Xiaohong Shi
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Ceramics
Wei Xie, Qiangang Fu, Chunyu Cheng, Ningning Yan
Summary: The study found that La2O3-doped SiC ceramic exhibits better anti-oxidation performance at high temperatures, but excessive La2O3 content can lead to a decrease in anti-oxidation performance.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Multidisciplinary
Jie Pu, Lingjun Guo, Qiang Song, Xuanming Zhang, Bing Liu, Qionghuan Zeng, Yunyu Li, Xuemin Yin, Ningning Yan, Jiachen Meng, Hejun Li
COMPOSITES PART B-ENGINEERING
(2020)
Article
Materials Science, Ceramics
Jinguo Huang, Lingjun Guo, Kaijiao Li, Ningning Yan, Lei Zhou, Yunyu Li
Summary: Al2O3-modified SiC (AOSC) and Al-modified SiC (ASC) coatings prepared on carbon/carbon (C/C) composites via one-time pack cementation (PC) exhibit different microstructures and anti-oxidation performances. ASC coating provides better oxidation resistance and thermal shock resistance to C/C composites compared to AOSC coating. The addition of Al can enhance the sinterability of SiC, leading to the observed differences in performance. Additionally, thermodynamic analysis suggests that the Al2O3 oxidation product is more stable than the SiO2 (l) of oxidized SiC at 1500 degrees C.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ningning Yan, Qiangang Fu, Jiaping Zhang, Qingliang Shen
Summary: Porous zirconium carbide ceramics with stepped morphology were prepared by evaporating solvent combined with high-temperature sintering, where the morphology can be tuned by optimizing the sintering temperature. The stepped morphology was found to improve the adhesion strength between pyrocarbon and ZrC skeleton through mechanical interlocking. This study provides a strategy for enhancing the interfacial bonding strength of ultra-high temperature composites through morphology design.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Ningning Yan, Qiangang Fu, Dou Hu, Yuyu Zhang, Wei Xie, Jiaping Zhang
Summary: ZrC-C composites with different weight ratios of ZrC/PyC were prepared, and the results showed that increasing the weight ratio of ZrC/PyC led to higher compressive strengths, as well as the formation of a ZrO2 skeleton that could reduce composite consumption. Finite element simulation demonstrated that thermal stresses increased with the weight ratios of ZrC/PyC.
Article
Engineering, Multidisciplinary
Ningning Yan, Qiangang Fu, Mingde Tong, Jiaping Zhang, Jia Sun, Qingliang Shen
Summary: Nose-shaped ZrC-C composites with gradient pore structure (ZrC-CGS) were successfully prepared using ZrC skeleton as preform, showing superior ablation and heat insulation performance. Compared with ZrC-C composites with dense structure, ZrC-CGS composites have a lower mass ablation rate, higher heat resistance capacity, and lower coefficients of thermal expansion.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
De Lu, Lei Zhuang, Jijun Zhang, Lei Su, Min Niu, Yuhang Yang, Liang Xu, Pengfei Guo, Zhixin Cai, Mingzhu Li, Kang Peng, Hongjie Wang
Summary: Lightweight porous ceramics have gained attention for their potential applications in energy conservation, aerospace, and automobile industries. However, their weakness and brittleness pose challenges, as tiny defects can lead to catastrophic failure and limit their reliability. In this study, we present a SiC/SiO2 nanowire network with a biphasic structure that exhibits lightweight properties, high mechanical strength, and damage tolerance. The network's strength is attributed to the mixed structure of the binding coating, which restricts nanowire deformation under compression. This lightweight and strong SiC/SiO2 nanowire network holds promise for engineering applications in harsh environments.
Article
Multidisciplinary Sciences
Lei Zhuang, De Lu, Jijun Zhang, Pengfei Guo, Lei Su, Yuanbin Qin, Peng Zhang, Liang Xu, Min Niu, Kang Peng, Hongjie Wang
Summary: The authors demonstrate a synthesis strategy for fabricating highly compressible and fatigue-resistant aerogels by assembling interconnected carbon tubes. The resulting aerogels exhibit near-zero Poisson's ratio, a maximum strength over 20 MPa, and a fully recoverable strain up to 99%. They also show high fatigue resistance and thermal stability up to 2500 degrees C in an Ar atmosphere, as well as tunable conductivity and electromagnetic shielding. These properties make them attractive for use in harsh environments.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Peng Wei, Lei Zhuang, Hulei Yu, Yexia Qin, Yanhui Chu
Summary: This study reports the synthesis of ultrafine powders of high-entropy rare-earth silicates (HERESs) via a simple molten salt method. The results show successful synthesis of high-entropy rare-earth disilicates (HEREDs) and monosilicates (HEREMs) with uniform elemental distribution.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Zhichao Shang, Xiaoping Cai, Farshid Pahlevani, Yan Zheng, Akbar Hojjati-Najafabadi, Xinran Gao, Baojing Zhang, Peizhong Feng
Summary: High porosity Co-Al-Fe intermetallics with 3D-microstructures were successfully synthesized in one step via a thermal explosion reaction. The link between pore structure and permeability was investigated using 3D-XRM technology. The corrosion resistance of the samples with different Fe contents was studied at 900 degrees C under an oxygen/sulphur atmosphere for up to 120 h. The results showed that the samples maintained stable pore structure and intact internal matrices, attributed to the formation of a thin protective layer on the surface. In addition, inward diffusion of S resulted in the formation of FeS nodules.
Article
Materials Science, Multidisciplinary
Lian Ma, Hain Yang, Daquan Zhang, Wei Wu
Summary: In this study, an environmentally friendly volatile corrosion inhibitor, lysine salts (LA), was prepared between graphene oxide (GO) layers using an in situ intercalation technique. The corrosion inhibition effect of LA was evaluated, and it was found that LA-GO2 achieved a 99.3% corrosion inhibition efficiency after composition optimization. The inhibition of the electrochemical anodic process on the surface of mild steel was the main reason for the high corrosion inhibition efficiency of LA-GO2. The properties of the surface film on the corroded steel were also characterized in detail to understand the corrosion inhibition mechanism of LA-GO2.
Article
Materials Science, Multidisciplinary
Running Wang, Jiaping Zhang, Bing Liu, Jie Fei, Qiangang Fu
Summary: By introducing a tailored SiC-C interphase, the carbon fiber can be effectively protected, improving the mechanical and ablation properties of leading edge shaped C/C-ZrC-SiC composites.
Article
Materials Science, Multidisciplinary
Zihua Wang, Chijia Wang, Ruitao Wang, Jiapeng Deng, Kun Zhang, Yanji Zhu, Huaiyuan Wang
Summary: A robust anti-corrosive coating has been developed using functional fly ash, which demonstrates excellent corrosion resistance and improved mechanical properties. The coating achieves these enhancements through molecular cross-linking design and surface augmentation techniques, resulting in a significantly improved impedance modulus compared to pure polyurea coatings.
Article
Materials Science, Multidisciplinary
Haofei Sun, Meifeng Li, Hao Zhang, Jing Liu
Summary: The oxidation behavior of FeCrNi medium entropy alloy was investigated through experimental observations and density functional theory (DFT) calculations. The study found that at 900 degrees C, the alloy forms a desirable and continuous oxide layer, while at 1000 degrees C, the oxide layer becomes discontinuous with penetration of oxide. These observations highlight the significant role of phase structure in promoting the formation of protective oxide scales and influencing oxidation resistance.
Article
Materials Science, Multidisciplinary
Yang Li, Ke Ma, Jingjun Xu, Jingjing Li, Yueming Li, Yi Zhang, Jun Zuo, Meishuan Li
Summary: Cr2AlC diffusion barrier effectively blocks the diffusion of Ti, enhancing the stability and spalling resistance of the Al2O3 scales between NiCrAlY coating and TiAl alloy.
Article
Materials Science, Multidisciplinary
Weiyi Wang, Qinglin Pan, Xiangdong Wang, Bing Liu
Summary: By adding Ce, Sc, Y and Zr elements to Al-Mg-Si alloy, the microstructure of the alloy can be regulated, and the corrosion and heat resistance of the materials can be improved.
Article
Materials Science, Multidisciplinary
Andrea Cristoforetti, Javier Izquierdo, Ricardo M. Souto, Flavio Deflorian, Michele Fedel, Stefano Rossi
Summary: This study presents a new approach to studying the mechanism of filiform corrosion in organic coated steel using the scanning vibrating electrode technique (SVET) and micropotentiometry (potentiometric SECM). The electrochemical activity under the coating was evaluated by mapping the ionic current densities coming from artificial defects made in specific locations of the filament. Antimony tips were also used to investigate the pH changes associated with different corrosion reactions at the metal-paint interface. Local pH levels along the filament in the anodic and cathodic regions were determined.
Article
Materials Science, Multidisciplinary
Yang Gao, Dayun Sun, Zhu Liu, Shuo Cong, Rui Tang, Yanping Huang, Lefu Zhang, Xianglong Guo
Summary: The corrosion characteristics of a novel alumina-forming austenitic steel in high-pressure high-temperature water environment were studied. The addition of aluminum has a negative effect on the continuity of the alumina scale.
Article
Materials Science, Multidisciplinary
Negin Madelat, Benny Wouters, Peter Visser, Zahra Jiryaeisharahi, Kristof Marcoen, Shoshan T. Abrahami, Annick Hubin, Herman Terryn, Tom Hauffman
Summary: This work explores the correlation between electrolyte transport properties and the variation of pigment volume concentration (PVC) in organic coatings. An odd random phase electrochemical impedance spectroscopy (ORP-EIS) approach is used to analyze the diffusion of ions independent from water uptake. The results show that a higher PVC leads to a more homogeneous coating structure, resulting in faster diffusion of ions and enhanced water uptake.
Article
Materials Science, Multidisciplinary
Eloa Lopes Maia, Serguei Gavrilov, Valentyn Tsisar, Kitty Baert, Iris De Graeve
Summary: The effect of pre-oxidation in air at 300-500°C on the initiation and development of liquid metal corrosion attack on 316L austenitic steel in static lead-bismuth eutectic (LBE) has been investigated. It was found that pre-formed oxide films can protect the surface against dissolution, while high temperature pre-oxidation leads to localized corrosion.
Article
Materials Science, Multidisciplinary
Baozhuang Sun, Qiuyu Wang, Yue Pan, Zhiyong Liu, Cuiwei Du, Xiaogang Li
Summary: In this study, a non-steady electrochemical model was established to investigate stress corrosion cracking (SCC). The model was verified using 304 SS with various microstructures, confirming its effectiveness in assessing SCC susceptibility.
Article
Materials Science, Multidisciplinary
Xingyu Xiao, Xinhua Liu, Zhilei Wang, Xuexu Xu, Mingying Chen, Jianxin Xie
Summary: The corrosion behavior and mechanisms of Cu-10Ni-X (Al, Fe, Mn, Cr, Sn, Ti, Zn) alloys in a 3.5% NaCl solution were systematically investigated. Both computational and experimental results revealed that except Ti, other elements could enhance the corrosion resistance of Cu2O passivation film.
Article
Materials Science, Multidisciplinary
Gen Zhang, Yan-Ping Huang, E. Jiang, Wei -Wei Liu, Hong Yang, Jing Xiong, Yong-Fu Zhao
Summary: The addition of aluminum has a significant influence on the intermetallic compounds in AFA alloys, particularly increasing the content of B2-NiAl phase. In the SCO2 environment, the oxide scales formed on AFA alloys with aluminum were thinner than on ASS without aluminum, and the structure of the oxide scales changed to a double-layer structure.
Article
Materials Science, Multidisciplinary
Yuxuan He, Guozheng Xiao, Chao Wang, Xuefeng Lu, Liuyuan Li, Shiying Liu, Yusheng Wu, Zhanjie Wang
Summary: The relationship between configurational entropy and lattice distortion in novel rare earth monosilicates was investigated, and the effect of configurational entropy on their properties was studied. The results showed that lattice distortion increased with the increase of configurational entropy, but a highly symmetrical crystal structure was formed when the configurational entropy was large enough, inhibiting the lattice distortion.
