Lixia Yang

Nanjing University of Aeronautics and Astronautics

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Zhaofeng Chen

Nanjing University of Aeronautics and Astronautics

Zongde Kou

Nanjing University of Science and Technology

Tianlong Liu

Guangdong Academy of Sciences

Xiaofeng Zhao

Heilongjiang University

Manna Li

Nanchang University

Qiong Wu

Tianjin University

Zhaofeng Chen

Nanjing University of Aeronautics and Astronautics

Mengmeng Yang

Guangxi University

Yanqing Yang

Washington University in St. Louis

Yang Ding

Nanjing University of Aeronautics and Astronautics

Cooperative Institutions

Nanjing University of Aeronautics and Astronautics

Chinese Academy of Sciences

Shanghai Jiao Tong University

Central South University

Nanjing University of Science and Technology

University of Chinese Academy of Sciences

Ludong University

Harbin Institute of Technology

University of Electronic Science and Technology of China

Nanjing Tech University

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Nonstoichiometric M-ferrite porous spheres: preparation, shape evolution and magnetic properties

Ceramics International (2014)

Lixia Yang Yanbin Xu Rencheng Jin Feng Wang Ping Yin

Selected area diffraction

10.1016/j.ceramint.2014.10.037

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Citations (9)

Hierarchically Porous Networks Structure Based on Flexible SiO2 Nanofibrous Aerogel with Excellent Low Frequency Noise Absorption

SSRN Electronic Journal (2022)

Mengmeng Yang Zhaofeng Chen Lixia Yang Xiaoyang Chen Manna Li

Environmental noise has been regarded as major noise pollutions with severe hazards to human physical and mental health. The common commercial fiber sound-absorption materials have insufficient low frequencies wave absorbing and fire-resistant ability, limiting their wide application. To solve those problem, a novel strategy combining flexible nanofibers and rGO/MXene nanosheets is proposed to fabricate rGO/MXene/SiO 2 nanofibers composite aerogel with hierarchically porous structured, which possess extremely low density of 9.8 mg/cm 3 and superior low-frequency sound absorption ability (NRC value of 0.51). The obtained composite aerogel possessed a large deformation up to 80% with compressive tress of 17KPa, and quickly recover. In addition, the obtained composite aerogel could be easily produced on a large scale, providing a reference for development of new generation of sound absorbing products.

10.2139/ssrn.4145373

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Temperature Resistance Properties of Unidirectional Laminated Cf/SiC-Al Prepared by PIP and Vacuum Pressure Infiltration

Materials (2023)

Tianru Guan Le Trong Lu Zhaofeng Chen Lixia Yang

Material used for aero-engine fan blade requires excellent mechanical properties at high temperature (300 °C). Continuous carbon-fiber-reinforced silicon carbide ceramic matrix composites (Cf/SiC) are necessary candidates in this field, possessing low density, high strength, high modulus, and excellent high-temperature resistance. However, during the preparation process of Cf/SiC, there were inevitably residual pores and defects inside, resulting in insufficient compressive strength and reliability. The vacuum pressure melting infiltration process was used to infiltrate low melting point and high wettability aluminum alloys into the porous Cf/SiC composite material prepared by the precursor impregnation cracking process, repairing the residual pore defects inside the body. The porosity of porous Cf/SiC decreased from 49.65% to 5.1% after aluminum alloy repair and strengthening. The mechanical properties of Cf/SiC-Al composite materials strengthened by aluminum alloy repair after heat treatment were studied. The tensile strength of the as-prepared Cf/SiC-Al was 166 ± 10 MPa, which were degraded by 13~22% after heat treatment. The nonlinear sections of stress-displacement curve of as-treated samples were shorter than that of as-prepared sample. The hardness of aluminum alloy matrix after 300 °C 1 h heat treatment was 58 Hv, which was not obviously reduced compared with the sample without heat treatment. The vacuum infiltration of aluminum alloy is expected to have guiding significance for repairing and strengthening internal defects in ceramic matrix composites.

Ceramic matrix composite

10.3390/ma16155445

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Citations (2)

Effect of oxygen partial pressure on the phosphorescence of different lanthanide ion (Ln3+)-doped yttria-stabilised zirconia

Sensors and Actuators B Chemical (2020)

Yongzeng Li Tao Cai Lixia Yang Songtao Guo Di Peng

Partial pressure

10.1016/j.snb.2020.127666

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Citations (19)

Phosphor-Doped Thermal Barrier Coatings Deposited by Air Plasma Spray for In-Depth Temperature Sensing

Sensors (2016)

Di Peng Lixia Yang Tao Cai Yingzheng Liu Xiaofeng Zhao

Yttria-stabilized zirconia (YSZ)-based thermal barrier coating (TBC) has been integrated with thermographic phosphors through air plasma spray (APS) for in-depth; non-contact temperature sensing. This coating consisted of a thin layer of Dy-doped YSZ (about 40 µm) on the bottom and a regular YSZ layer with a thickness up to 300 µm on top. A measurement system has been established; which included a portable; low-cost diode laser (405 nm); a photo-multiplier tube (PMT) and the related optics. Coating samples with different topcoat thickness were calibrated in a high-temperature furnace from room temperature to around 900 °C. The results convincingly showed that the current sensor and the measurement system was capable of in-depth temperature sensing over 800 °C with a YSZ top layer up to 300 µm. The topcoat thickness was found to have a strong effect on the luminescent signal level. Therefore; the measurement accuracy at high temperatures was reduced for samples with thick topcoats due to strong light attenuation. However; it seemed that the light transmissivity of YSZ topcoat increased with temperature; which would improve the sensor's performance at high temperatures. The current sensor and the measurement technology have shown great potential in on-line monitoring of TBC interface temperature.

10.3390/s16101490

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Citations (12)

Quantitative Characterization and Mapping Relationship between Microstructure, Composition, Orientation, and Mechanical Properties of Nickel-Based Superalloy Inconel 718

Materials Research Express (2024)

Yaxin Ma Yifei Gao Lei Zhao Zhanbin Liu Lixia Yang

Abstract This study explores the relationship between the microstructure, composition, orientation, and mechanical properties of the nickel-based superalloy Inconel 718. Employing scanning electron microscopy (SEM), electron microprobe (EMP), nano-indentation, and other techniques, the study observes the structure, confirms the composition, determines orientation, and tests mechanical properties in specific micro-zones. Findings reveal a uniform grain distribution in Inconel 718, with a minor δ -phase presence at grain boundaries. There is a notable enrichment of Nb at the grain boundaries, whereas Fe and Cr levels are lower at these boundaries compared to the grain interiors. The indentation hardness and modulus at the grain boundaries are markedly higher than those within the grains. Moreover, grains with different orientations exhibit diverse microscale mechanical properties, such as hardness and elastic modulus. This research establishes a quantitative characterization and mapping relationship between the microstructure, composition, orientation, and mechanical properties of Inconel 718, providing a foundation for future multiscale (micro to macro) mechanical property investigations.

Inconel

Characterization

10.1088/2053-1591/ad8f1b

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Nonstoichiometric Zn Ferrite and ZnFe2O4/Fe2O3 Composite Spheres: Preparation, Magnetic Properties, and Chromium Removal

Russian Journal of Physical Chemistry A (2018)

Chun‐Liang Hang Lixia Yang Changmei Sun Ying Liang

Zinc ferrite

10.1134/s0036024418030044

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A flexible double network aerogel reinforced by SiO2/ZrO2 fibers paper with excellent thermal insulation at high-temperature

Ceramics International (2023)

Qiong Wu Zhaofeng Chen Yang Ding Longpan Yin Mengmeng Yang

Thermal Stability

10.1016/j.ceramint.2023.09.283

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The effect of SiC coatings microstructure on their infrared emissivity

Journal of Asian Ceramic Societies (2022)

Jia‐Bao Liu Zhaofeng Chen Lixia Yang Pan Chai Qiang Wan

Infrared temperature measurement is widely used in the MOCVD process, and improving the surface infrared emissivity of the graphite base is beneficial to improve the temperature measurement accuracy. In this study, SiC coatings were prepared by CVD on graphite substrate using different process parameters including CVD temperature, total pressure, H2/MTS ratio. The infrared emissivity of SiC coatings with different microstructures was investigated. All SiC coatings obtained were β-SiC. The infrared emissivities of the three samples with different surface morphologies are 0.93, 0.95 and 0.97, respectively. As the surface roughness increases, the reflection and scattering of thermally radiated electromagnetic waves increases, resulting in higher infrared emissivity. The loose structure of the grain surface makes the surface electromagnetic wave and light wave resonant coupling, thus increasing the infrared emissivity.

Low emissivity

10.1080/21870764.2022.2159952

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Citations (8)

Oxidation mechanism and mechanical property of SiC coating in TRistructural ISOtropic fuels under steam contained environments

Journal of the Ceramic Society of Japan (2022)

Fangcheng Cao Zhen He Lixia Yang

The oxidation performance of silicon carbide (SiC) coating on nuclear fuel particle and the subsequent effect on the mechanical integrity was investigated. The effects of steam content on the phase composition and microstructure of the SiC layer at different temperatures were discussed. Reaction rates of steam with the SiC layer were found to obey the liner-parabolic oxidation law. The fracture strength of SiC shell was evaluated, which was dominated by the thickness variation of the SiC. Furthermore, finite element analysis was performed to simulate the stress distribution in the SiC shell during the crush test. The results revealed the SiC shell of reduced thickness caused by oxidation had higher stress concentration at the inner surface and resulted in a lower fracture strength value.

Particle (ecology)

10.2109/jcersj2.22025

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Citations (3)