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  • Exclusive: Boost China's Strength in Manufacturing
    CHEN Kexin, GAO Liyin, XU Zengguang, LI Zhe, LIU Zhiquan
    Science & Technology Review. 2023, 41(5): 15-26. https://doi.org/10.3981/j.issn.1000-7857.2023.05.002
    Abstract (374) PDF (1112) HTML   Knowledge map   Save
    As Moore's law approaches to the limit, "More than Moore" for 2.5D/3D packaging is entering its historical arena. Through silicon via (TSV) is one of the important representatives in high-end electronics advanced packaging. This paper focuses on the copper plating process which realizes electrical interconnection in TSV technology and systematically summarizes the composition of the formula of copper plating solutions. The key difficulty of the copper plating process lies in the defect-free filling of TSV, and the selection of additives is particularly important. A guide for selection of electroplating solution for TSV metallization electroplating process is then provided. In addition, the external electric field and other process conditions imposed on the plating solution during the plating process will also affect the quality of filling vias. Therefore, TSV copper plating processes of the research teams at home and abroad are summarized for selection of a copper plating process. Finally, the characterization methods for studying the action mechanism of additives in electroplating solutions based on computational simulation and electrochemical testing are briefly summarized, and the progress and shortcomings of current research methods on additives in electroplating solution are discussed.
  • Exclusive: Boost China's Strength in Manufacturing
    YU Ruichen, JIANG Jinhua, ZHU Xiaojin, ZHANG Hesheng, GAO Zhiyuan
    Science & Technology Review. 2023, 41(5): 27-33. https://doi.org/10.3981/j.issn.1000-7857.2023.05.003
    Large-scale adoption of composite blades is the most effective way to achieve ultra-high bypass ratio and low weight of aero-engine in the aerospace industry. The research progress in the manufacturing technology for resin matrix, metal matrix, and ceramic matrix composite blades is discussed in this paper. The development and application situation of the common processing technology and key manufacturing technology of aero-engine composite blades are reviewed in detail, including prepreg/molding process and three-dimensional braided/reinforced resin transfer molding process of resin matrix composite blades, molding process, pressure casting process and superplastic forming/diffusion bonding process of metal matrix composite blades, and melt infiltration process of ceramic matrix composite blades. Finally, the trend of aero-engine composite blades is discussed and the research direction to further develop key manufacturing technology of composite blades is summarized.
  • Exclusive: Boost China's Strength in Manufacturing
    CHEN Chaoyue, WANG Jiang, WANG Ruixin, ZHU Xiongjin, ZHAO Wang, CAI Jianan, REN Zhongming
    Science & Technology Review. 2023, 41(5): 34-48. https://doi.org/10.3981/j.issn.1000-7857.2023.05.004
    Additive manufacturing technology can break through the processing and design limitations of traditional processes and realize integrated forming of high-performance parts with complex structures. It has great application potential in aero engines and gas turbines. In this paper, for three types of alloys, including nickel-based superalloys, titanium-based alloys, and high-strength steels, the microstructure characteristics and control methods of laser processing parameters, composition modification, and external field are reviewed at first. Then the typical characteristics and comparison of mechanical properties are summarized, which provide an in-depth understanding of the mapping relationship between process parametersmicrostructure-mechanical properties of additive manufacturing alloys. Finally, the application status and typical cases of additive manufacturing of the above materials in key components are introduced. In addition, this paper also looks ahead at the new additive manufacturing technology, microstructure control technology, special alloy composition, and research on the process stability for key components in the field of aero engines and gas turbines, which can further promote the application of additive manufacturing technology.
  • Exclusive: Boost China's Strength in Manufacturing
    HONG Jichao, LIANG Fengwei, YANG Jingsong, LI Kerui
    Science & Technology Review. 2023, 41(5): 49-59. https://doi.org/10.3981/j.issn.1000-7857.2023.05.005
    Abstract (368) PDF (3280) HTML   Knowledge map   Save
    Developing new energy vehicles and promoting industrialization of new energy vehicles are of great significance for solving the problems of high pollution, high energy consumption, and high emissions of traditional fuel vehicles. Taking new energy vehicle as the research object this paper comprehensively analyzes the current industrial and technological development status of new energy vehicles from the development background of new energy vehicles, the whole vehicle, and the three-electric system. It is pointed out that Chian's new energy vehicles have issues such as imperfect infrastructure construction, low battery recycling rate, and lack of mastery of key technologies of basic devices. Therefore, this paper aims to provide reference for the future development direction and planning of new energy vehicle technology and industry.
  • Exclusive: Boost China's Strength in Manufacturing
    WANG Bo, CHEN Jiaren, LIAO Fangwei, AO Yibin
    Science & Technology Review. 2023, 41(5): 60-68. https://doi.org/10.3981/j.issn.1000-7857.2023.05.006
    Based on the realistic requirements of "double carbon" goal for the green development of the construction industry,this paper analyzes the low-carbon development experience of construction industry in the major developed countries and the low-carbon development trend of China's construction industry. Combined with the important opportunities brought by intelligent construction for the green and low-carbon transformation, this paper proposes the path of green and low-carbon transformation for the construction industry in the context of intelligent construction from four dimensions: architectural design, building materials production, building construction, and smart operation, and puts forward the policy suggestions in the context of intelligent construction from four aspects: strengthening top-level system design, improving the supporting policy system, accelerating the innovative development of enterprises and building a healthy industrial ecology. The paper may provide reference for implementing the manufacturing power strategy and the continuous promotion of high-quality development of construction industry of China in the new era.
  • Exclusive: Boost China's Strength in Manufacturing
    ZHOU Mingsheng, ZHOU Jun
    Science & Technology Review. 2023, 41(5): 69-77. https://doi.org/10.3981/j.issn.1000-7857.2023.05.007
    Abstract (146) PDF (1216) HTML   Knowledge map   Save
    On the basis of analyzing the connotation, system architecture, typical characteristics and main classifications of advanced manufacturing technology, the paper systematically summarizes the technological innovation paths and technological advantages of advanced manufacturing industries at home and abroad, such as the United States, Germany, Japan and China. Under the background of promoting the construction of a manufacturing power, and in combination with the world development trends, the paper puts forward suggestions for the high-quality development of China's advanced manufacturing industry in terms of promoting intelligent manufacturing, strengthening basic scientific research, laying out internationally leading state laboratories and innovation centers, and building an independent leading manufacturing industry cluster, with a view to providing theoretical and practical reference for domestic scholars in this field.
  • Exclusive: Boost China's Strength in Manufacturing
    ZHOU Jian, LI Hui, GUO Shuaichao, WANG Chenxu
    Science & Technology Review. 2023, 41(5): 78-90. https://doi.org/10.3981/j.issn.1000-7857.2023.05.008
    For the past decade the study of the ship domain theory has made great progress and been widely used in the research of ship collision avoidance, navigation decision-making and marine traffic engineering. With the rising of the concept of MASS (maritime autonomous surface ship) and relevant laws/regulations, the process of ship intelligence and autonomy will be accelerated, and the ship domain theory will develop in a new direction under this trend. The main motivation of this paper is to explore the role of ship domain in the development of autonomous vessels. Firstly, the development status of the ship domain is summarized including existing definitions and modeling methods, and the practical application scenarios of the ship domain models are discussed. Subsequently, the development of MASS and the challenges it may face in the future innovation process are discussed. Finally, according to the needs of the MASS era, the future development direction and application of the ship domain theory are put forward.