Jing Han You

Anhui University of Science and Technology

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Tong Wei Li

Shanghai University

Zheng Xin Tang

Henan University of Science and Technology

Xiao Yang Gong

Kyushu University

Wei Wei Ju

Dalian Polytechnic University

Li Ben Li

Henan University of Science and Technology

Qing Dong Chen

Henan University of Science and Technology

Zhi Qiang Zhen

Henan University of Science and Technology

Hui Wang

Harbin Institute of Technology

Qing Dong Chen

Zhengzhou University

Kai Chen

Nanjing University

Cooperative Institutions

Henan University of Science and Technology

Central South University

Chinese Academy of Sciences

China University of Petroleum, East China

Northwestern Polytechnical University

University of Chinese Academy of Sciences

Xi'an Shiyou University

Ministry of Education of the People's Republic of China

Harbin Institute of Technology

Research Institute of Petroleum Exploration and Development

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Effects of the Replacement of Ti by Zr on the Dielectric Properties of CaCu3Ti4012 Ceramics

Key engineering materials (2008)

Jing Han You Qing Dong Chen Wei Wei Ju Li Ben Li Kai Chen

10.4028/0-87849-473-1.118

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Citations (0)

A Novel Green Tape with High Solid Content Prepared by Aqueous Tape-Casting

Advanced materials research (2010)

Shuang Xi Wang Xue Ouyang Ya Dong Wang Qiong Na Zheng Jing Han You

Green tapes were prepared by aqueous tape-casting method with binders of polyvinyl alcohol, styrene-acrylate emulsion and the mixed binders, respectively. Effects of solid content and binders on viscosity of the slurry were investigated by digital rotary viscosimeter. Results show that solid content should be lower than 60wt % with the binder of PVA; solid content could achieve the maximum 73wt% by tape-casting using emulsion as binder. Furthermore, slurry with solid content up to 75wt % had been successfully prepared by tape-casting using mixed binders. Mixed binders are promising additives to produce high solid content green tapes with smooth surface, adequate strength and very good flexibility.

Tape casting

Polyvinyl Alcohol

10.4028/www.scientific.net/amr.150-151.646

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Ultraviolet Photoluminescence on Nano-Crystalline 6H-SiC

Key engineering materials (2008)

Hui Wang Tong Wei Li Zheng Xin Tang Jing Han You Xiang Ru Liu

Ultraviolet

10.4028/0-87849-473-1.319

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Microstructural Study of a Mg–Zn–Zr Alloy Hot Compressed at a High Strain Rate

Materials (2020)

Jing Han You Yingjie Huang Chuming Liu Hongyi Zhan Lixin Huang

Understanding the correlation of plasticity with deformation and dynamic recrystallization (DRX) behaviors, in magnesium (Mg) alloys deformed under high-strain-rate conditions, is increasingly important for wrought Mg processing. In the present study, a ZK30 (Mg-2.61%Zn-0.66%Zr by weight percent (wt.%)) alloy in the as-forged state was hot compressed to various strain levels at a temperature of 350 °C and a strain rate of 10 s-1. Heterogeneous deformation and dynamic recrystallization (DRX) behaviors of the complicated microstructures in the deformed samples were analyzed via a grain-partitioning approach based on intra-grain misorientation analysis from electron back-scattered diffraction (EBSD). The ZK30 alloy showed excellent formability, remaining intact at a true strain of -1.11. Continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) via grain boundary corrugation/bulging are the dominant mechanisms for the relaxation of strain energy during hot compression. Initial Zr-rich coarse grains undertook a significant portion of the plastic strain as the compression progressed, reflected by the increased misorientations within their interior and marked change in their aspect ratios. The results indicate that the excellent plasticity of the as-forged ZK30 alloy can be attributed to the operative CDRX mechanisms and the reduced deformation anisotropy of Zr-rich coarse grains containing Zn-Zr nano-precipitates.

Strain (injury)

10.3390/ma13102348

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Citations (17)

Ab-Initio Study on Adsorption and Diffusion of Au Atoms on Clean Si(001) and H-Si(001) Surface

Key engineering materials (2008)

Wei Wei Ju Tong Wei Li Jing Han You Zheng Xin Tang Xiao Yang Gong

Performing ab-initio total-energy calculations to investigate the adsorption and diffusion processes of the Au atoms with both the clean Si(001)-(1×1) and H-terminated Si(001)-(2×1) surfaces. It was found that, on the clean Si(001)-(1×1) surface, the most stable adsorption sites for Au atoms are middle part of four Si atoms, while on H-terminated Si(001)-(2×1) surface, the most stable sites are the middle part of a Si-Si dimer. The result showed that surface hydrogenation make most stable site transfer and affect the adsorption of Au on Si(001) surface.

10.4028/www.scientific.net/kem.368-372.1699

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Citations (2)

Microwave Absorption Properties of Nano-Iron Epoxy Resin-Based Composite Material

Key engineering materials (2010)

Xiao Yang Gong Jing Han You Zhen Zhang Lei Yang

A novel nano-iron particulate reinforced polymer-based composite material against electromagnetic pollution was prepared for household appliances. The attenuation, permittivity and various absorbing aspects of the composite materials were investigated. Results indicated that the composite materials exhibit promising effects of microwave absorption. The attenuation was affected by volume fraction of nano-iron powders. A single microwave absorption medium won’t be appreciable, and a combination of different microwave absorption materials is suggested.

Volume fraction

10.4028/www.scientific.net/kem.434-435.796

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Reducing yield asymmetry in a wrought Mg–9Al alloy by randomized texture achieved via multi-directional forging

Materials Science and Engineering A (2020)

Jiansheng Wei Jing Han You Dongdong Zhang Shunong Jiang Zhiyong Chen

Texture (cosmology)

Tension (geology)

10.1016/j.msea.2020.140003

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Citations (23)

Influencing Factors in the Test Procedure of Hydrated Microsphere Particle Size

IOP Conference Series Earth and Environmental Science (2018)

Tiantian Zhang Zongxian Pei Shanshan Gao Gang Xie Jing Han You

Microsphere profile control is a new deep profile control technology in oilfield, which has developed in recent years. The particle size distribution of hydrated microsphere is an important basis for its application in formation pore throat, which has direct influence on the effect of profile control. First, the existing problems in current particle measurement of hydrated microsphere were studied through analyzing the results of the hydrated particle size, which were obtained from the static laser particle size analyzer. Results showed that there were two main problems in the current test methods of hydrated particle size. One was the poor reproducibility of the test results, and the other was the unrecognized particle size distribution of the truly hydrated microsphere. In addition, the test factors of hydrated microsphere particle size were studied through analyzing the morphology and the composition of microsphere. Results showed that the main influential factors of the hydrated particle size testing were the organic solvent and the emulsifier, which existed in the aqueous solution of microsphere with a variety of forms. Finally, some specific suggestions were put forward about the measurement of testing the hydrated particle size, which was removing the organic solvent and emulsifier from the aqueous solution of microsphere before measuring the hydrated particle size.

Particle (ecology)

10.1088/1755-1315/153/6/062089

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Effects of the Replacement of Ti by Zr on the Dielectric Properties of CaCu3Ti4012 Ceramics

Key engineering materials (2008)

Jing Han You Qing Dong Chen Wei Wei Ju Li Ben Li Kai Chen

CaCu3Ti4O12 and CaCu3Ti3.9Zr0.1O12 ceramics were prepared by the traditional solid-state reaction method and the dielectric properties were investigated. Comparison of the results of the two samples examined indicated that the partial replacement of titanium by zirconium in the system CaCu3Ti4O12 may result in different changes of the dielectric constant and dielectric loss. For these experimental phenomena possible explanations and predictions also have been presented.

Dielectric loss

10.4028/www.scientific.net/kem.368-372.118

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Citations (3)

Mechanical Analysis of Separate Layer Injection String during Operation Condition and its Application

Mingchao Gang Dexin Yuan Jing Han You Weiyi Xie Rui Wang

Separate layer water injection technic is one of the efficient measures for keeping petroleum output steady and improving oil recovery rate.In the actual operating mode, injection string which be placed in the three-dimensional wellbore may produce complicated stress and strain.Analyzing mechanical property in different conditions accurately is very important for improving design level of string and success rate of separate layer injection.Considered wellbore curvature and spatial stress status, a three-dimension mechanical analysis model of layer water injection string was established which analyzed the comprehensive influence of injection tools such as packer, water distributor, centering guide, and the mechanical continuity conditions of injection tools were established.Based on the mechanical model, considering the influence of working parameter, a mechanics behavior analysis method and procedure were proposed in the whole process of the separate injection pipe strings.In addition, the mechanical analysis software was developed using C#, which the research production had been successfully used in Huabei Oilfield.

10.2991/ifmca-16.2017.113

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Citations (1)