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1,595 results on '"Cui, Xue"'

102. Research status and prospect of laser additive manufacturing technology for high performance gradient functional materials

Author

CUI Xue, ZHANG Song, ZHANG Chun-hua, WU Chen-liang, WANG Qiang, and DONG Shi-yun

Subjects
high performance gradient functional material, laser additive manufacturing, research sta-tus, development trend, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Among the manufacturing methods of high performance gradient functional materials, laser additive manufacturing technology can achieve the materials with gradient microstructure and property through precisely controlling the powder feeding and corresponding process adjustment, providing a new way to prepare high performance gradient functional materials more conveniently and efficiently. The basic principles and classification of laser additive manufacturing technology for high performance gradient functional materials were introduced in this paper, and the research progress in manufacturing high performance gradient functional materials by laser additive manufacturing technology at home and abroad was summarized. Furthermore, the shortcomings of this research field in material selection, process optimization and process monitoring were proposed, and its future research directions, such as the establishment of standard systems, in-depth theoretical research and the development of new manufacturing systems, were prospected, which provide guidance for the research of laser additive manufacturing technology for high performance gradient functional materials.

Published
2020
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109. Neck circumference and waist circumference associated with cardiovascular events in type 2 diabetes (Beijing Community Diabetes Study 23)

Author

Yang, Guang-Ran, Yuan, Ming-Xia, Wan, Gang, Zhang, Xue-Lian, Fu, Han-Jing, Yuan, Shen-Yuan, Zhu, Liang-Xiang, Xie, Rong-Rong, Zhang, Jian-Dong, Li, Yu-Ling, Sun, Yan-Hua, Dai, Qin-Fang, Gao, Da-Yong, Cui, Xue-Li, Gao, Jian-Qin, Wang, Zi-Ming, Chen, Ying-Jun, Li, Yong-Jin, Hu, Dong-Ming, Gao, Juan, Gao, Ying, Miao, Jie, Chen, Yu-Jie, and Holman, Rury. R.

Published
2021
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122. Preparation and Properties of Low-Dielectric Polyimide Films Containing Tert-Butyl.

Author

Li, Xin, Zheng, Rongrong, Wang, Cheng, Chang, Haiyang, Chen, Shuwu, Wang, Liyan, Cui, Xue, Liu, Yutao, Li, Junhao, Yu, Guangning, and Shi, Ji

Subjects
POLYIMIDE films, MOLECULAR volume, PERMITTIVITY, BENZOPHENONES, POLYIMIDES, TENSILE strength, MICROELECTRONICS
Abstract

The design of high-performance polyimide (PI) films and understanding the relationship of the structure–dielectric property are of great significance in the field of the microelectronics industry, but are challenging. Herein, we describe the first work to construct a series of novel tert-butyl PI films (denoted as PI-1, PI-2, PI-3, and PI-4) based on a low-temperature polymerization strategy, which employed tetracarboxylic dianhydride (pyromellitic anhydride, 3,3′,4,4′-biphenyl tetracarboxylic anhydride, 4,4′-diphenyl ether dianhydride, and 3,3′,4,4′-benzophenone tetracarboxylic anhydride) and 4,4′-diamino-3,5-ditert butyl biphenyl ether as monomers. The results indicate that introducing tert-butyl branches in the main chain of PIs can enhance the free volume of the molecular chain and reduce the interaction between molecular chains of PI, resulting in a low dielectric constant. Particularly, the optimized PI-4 exhibits an excellent comprehensive performance with a high (5) wt% loss temperature (454 °C), tensile strength (117.40 MPa), and maximum hydrophobic angle (80.16°), and a low dielectric constant (2.90), which outperforms most of the results reported to date. [ABSTRACT FROM AUTHOR]

Published
2024
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129. The effects of cardiovascular risk factor combined anti-platelet therapy and the risk of cerebrovascular events in patients with T2DM in an urban community over 96-months follow-up: The Beijing communities diabetes study 19

Author

Zhang, Xue-Lian, Fu, Han-Jing, Yang, Guang-Ran, Wan, Gang, Li, Dongmei, Zhu, Liang-Xiang, Xie, Rong-Rong, Lv, Yu-Jie, Zhang, Jian-Dong, Li, Yu-Ling, Dai, Qin-Fang, Ji, Yu, Gao, Da-yong, Cui, Xue-Li, Liu, De-Yuan, Yuan, Shen-Yuan, and Yuan, Ming-Xia

Published
2018
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138. Effect of Cr Content on Isothermal Transformation Kinetics and TTT Diagram of Ti5Mo5V3Al-Cr Alloys

Author

WU Nan, CUI Xue-fei, WEI Yan-guang, TAO Hai-ming, and LUO Zheng

Subjects
Cr content, Ti5Mo5V3Al-Cr alloy, phase transformation, dynamic equation, TTT diagram, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

The relationship between phase transformation and time of Ti5Mo5V3Al-Cr (Cr content is 1.0%,3.0%,5.0%,7.0% and 9.0%,mass fraction) alloys at 420,520,620℃was studied by in-situ thermal expansion and XRD method. According to the Johnson-Mehl-Avrami equation and experimental results,the kinetic parameters of Ti5Mo5V3Al-Cr alloys were obtained by fitting, and the dynamic equation of the system was established. Furthermore,based on the experimental results and theoretical calculation results, the time temperature transformation (TTT) contrast curve of Ti5Mo5V3Al-Cr alloys was plotted. The results show that the calculated results are in good agreement with the experimental results. Besides, 1Cr and 3Cr alloys have a fast phase change speed in the test temperature range of 420,520,620℃; 5Cr and 7Cr alloys have the fastest alpha phase transition velocity at the "nose temperature zone" of 550℃. The "nose temperature zone" of 9Cr alloy is not obvious, which means that the phase transition rate is slow.

Published
2018
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