Peer Review Statementdoi: 10.1088/1742-6596/2342/1/011002pmid: N/A
All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing Publishing.• Type of peer review: Single Anonymous• Conference submission management system: Morressier• Number of submissions received: 43• Number of submissions sent for review: 38• Number of submissions accepted: 22• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 51.2• Average number of reviews per paper: 2• Total number of reviewers involved: 8• Contact person for queries:Name: Xuexia YeEmail: [email protected]: AEIC Academic Exchange Information Centre
Effect of substrate type on the lattice structure of AlN thin films annealed at high temperatureDong, Ling; Li, Yang; Jiang, Hongchuan; Zhao, Xiaohui; Zhang, Wanli
doi: 10.1088/1742-6596/2342/1/012009pmid: N/A
To measure the surface temperature of aerospace hot-end components accurately, AlN thin film temperature measurement technology is being explored. The core of this temperature measurement technology is the evolution law of the lattice structure with temperature, but the influence of substrate on its lattice structure is still unclear. In this research, C-axis preferred orientation AlN thin films were deposited on Ni-based superalloy and quartz glass substrates by Mid-frequency reactive magnetron sputtering. The effect of substrate type on the lattice structure of annealed AlN thin films was investigated. It was found that with the increase of temperature, the lattice structure parameters (2θ) of AlN thin films deposited on Ni-based superalloy gradually shifted to the left, while those of AlN thin films deposited on quartz glass keep a constant until 1300 °C. The results reveal that quartz glass substrate has no influence on the lattice structure of AlN thin films as long as the temperature is lower than 1300 °C. Quartz glass substrates are suitable for follow-up research of AlN thin film temperature measurement technology.
Research on the effects of raft on vibration isolationZhang, Zhenli; Liu, Haijian; Tan, Haitao; Wang, Qiangyong; Chao, Shang; Yang, Xuesong; Guo, Hanbei
doi: 10.1088/1742-6596/2342/1/012003pmid: N/A
The floating raft vibration isolation system includes upper and lower isolators and middle raft. As one of the most important parts that affect the performance of vibration isolation, the raft is usually assumed to be an undamped or viscous damping structure in the analysis, which is different from the actual situation. To study the effects of raft with hysteresis damping characteristics, a three-freedom complex stiffness mechanical model was built, and an approach for calculating the raft's force transmission rate was derived from impedance methods. Based on the mechanical model and a large-sized floating raft, we analysed the effects of raft mass, stiffness and damping on vibration isolation through numerical calculation. Results show that increasing raft mass improved vibration isolation over most frequency ranges; increase in raft stiffness contributed to improved isolation performance over frequency ranges near its low-order natural frequencies, while reduced the performance over higher frequency ranges; and greater raft damping led to enhanced vibration isolation at its natural frequencies and higher frequency ranges.
Effect of annealing on morphology of Si based Ge quantum dots grown by magnetron sputteringShu, Qijiang; Zhang, Xicheng; Wang, Zhan; Wang, Zhi
doi: 10.1088/1742-6596/2342/1/012014pmid: N/A
Silicon-based germanium quantum dots (Ge/Si QDs) have shown important application potential in optoelectronic devices due to their excellent properties, which made their controllable growth of morphology and structure become a research hotspot in recent years. This paper discussed the morphological evolution of Ge/Si QDs undergone different annealing, such as natural cooling, in-situ annealing followed by natural cooling, natural cooling followed by rising temperature for annealing, and natural cooling followed by moving the sample into a rapid annealing furnace for annealing. The formation process of QDs was analyzed based on the measurement results of atomic force microscope (AFM) and the thermodynamic and kinetic theories of thin film growth. The results showed that the influence of in-situ annealing in magnetron sputtering growth chamber on the morphology of QDs was different from that of annealing in rapid furnace due to the great difference of temperature-time curves between the two processes. Surprisingly, high-density and small-size Ge/Si QDs can be produced by using a process of in-situ natural cooling followed by rapid annealing, which provided a new idea for the preparation of high-quality QDs used for future devices.
Impact of cryogenic treatment on the microstructure and properties of a thermo-mechanically processed Cu-11Fe compositeLiu, Keming; Jin, Ying; Fu, Kai; Shi, Jinke; Li, Mulin; Wen, Jiahao; Zhang, Yanyan; Shen, Zhi; Huang, Zhikai
doi: 10.1088/1742-6596/2342/1/012007pmid: N/A
The conductivity and strength of Cu-Fe composites are contradictory. Cryogenic treatment is a promising process to improve the conductivity and strength of materials at the same time. The impact of cryogenic treatment on a thermo-mechanically processed Cu-11Fe composite was studied using a digital micro-ohmmeter, a tensile testing machine and optical microscopy. The average size of the iron grain in the cryogenically treating Cu-11Fe alloy decreased and the distribution was more uniform after the cryogenic treatment. The grain refinement and the distribution uniformity increased with improving cryogenic treatment time. The elongation to fracture and tensile strength improved first with increasing cryogenic treatment time to a peak value at 18 h and 12 h respectively, and subsequently tended to be stable at longer cryogenic treatment time. The electrical resistivity decreased first with the increase of cryogenic treatment time, then reached an electrical resistivity valley value at 18 h, and subsequently tended to be stable at longer cryogenic treatment time.
Novel Pd-loaded self-standing hierarchical pore structure silicalite for low temperature toluene catalytic combustionDeng, Kang; Xiao, Liangjun; Xie, Junming; Tu, Shunheng; Li, Yongfeng
doi: 10.1088/1742-6596/2342/1/012001pmid: N/A
A novel Pd-loaded self-standing hierarchical pore structure silicalite were obtained by a handy polymer form board assisted hydrothermal method. The selected foam-shaped form board of a polyurethane (PU) foam monolith was regarded as the precursor of the self-standing hierarchical pore structure silicalite. The fruiting silicalite can steadily hold unique macroporous network structure and shape of the anterior original PU foam board . By means of the BET and BJH pore size distribution tests, the as-synthesis silicalite demonstrated hierarchical pore structure. The method of in-situ reduction was wielded to load palladium on the silicalite, and the catalytic performance of the catalyst to decompose toluene was tested at multiple burning temperatures. The experimental results revealed that the Pd-loaded catalyst can effectively decompose toluene at nearly 230°C, realizing low-temperature catalytic combustion of toluene.
Flexural behavior of CFRP-aluminum fuselage frames with bolted splice jointsHe, Boling; Lu, Yuwei; Liu, Yupeng
doi: 10.1088/1742-6596/2342/1/012002pmid: N/A
Few work concerned on the flexural strength of carbon fiber reinforced plastic (CFRP)-aluminum fuselage frames with bolted splice joints used in aeronautical industry. To provide help for the design of CFRP aircraft strcutures, this paper investigated the flexural behavior of CFRP-aluminum fuselage frames with bolted splice joints experimentally. Firstly, CFRP-aluminum fuselage frames were fabricated with mid-span bolted splice joints. The joints comprised: reinforced or unreinforced aluminum splice plates bolted to the fuselage frames. The bolt diameters were 4.76mm and 6.35mm. Then, the effects of splice plate and bolt dimeter on flexural behavior of CFRP-aluminum fuselage frames with bolted splice joints were investigated through four-point bending test. It has been shown that the introduction of reinforced splice plate improves the structural load capacity. However, increasing bolt diameter lowers the flexural strength of CFRP-aluminum fuselage frames with bolted splice joints. This splice jointed structure is a representative part of the rear fuselage, and the experimental results will be commonly instructive for the the aeronautical CFRP joining applications.
Effect of heat treatment process on Microstructure and properties of 4Cr13N corrosion resistant plastic die steelFan, Yi; Xie, Guanli; Ma, Dangshen; Chi, Hongxiao; Zhou, Jian
doi: 10.1088/1742-6596/2342/1/012006pmid: N/A
The effect of heat treatment process on microstructure and mechanical properties of 4Cr13N corrosion-resistant plastic die steel were investigated. The experimental results indicate that, with the increase of quenching temperature of 4Cr13N steel, the undissolved second phase gradually decreased, the martensitic lath gradually coarsened, and the hardness first rise up and then move down. The hardness of 4Cr13N steel reaches the highest at 1020 °C, at this time, the quenching microstructure is martensite + undissolved carbide + retained austenite, and the type of undissolved carbide is M23C6. The tempering hardness curve has an obvious secondary hardening peak, the peak temperature is 500 °C, and the peak hardness is 55 HRC. Below 500 °C , with the increase of tempering temperature, granular nitride Cr2N dispersion precipitation from matrix, resulted in second phase strengthening, hardness increased, impact toughness decreased, and the fracture mode is quasi-cleavage fracture; Above 500 °C, the structure gradually transformed to sorbite, the hardness decreased, and the toughness increased. Over all, to achieve a better match of strength and toughness, 4Cr13N plastic die steel should be tempered between 200 ~ 480 °C, impact energy are above 15 J, hardness above 50 HRC.
Electrical performance optimization of serpentine interconnect for stretchable electronicsHan, Zhiyuan; Hong, Yang; Zhu, Xiaojun; Gu, Xiaolong; Sun, Yizhang
doi: 10.1088/1742-6596/2342/1/012005pmid: N/A
Stretchable electronics have a wide range of potential applications in healthcare monitoring and human–machine interactions due to their softness, stretchability, and conformability. Serpentine interconnects integrating with inorganic functional materials play an important role in high-performance stretchable electronics. A lot of research has focused on how to improve the stretchability of flexible electronic devices, while ignoring the intrinsic electrical properties of serpentine wires. In this manuscript, the electrical performance of serpentine interconnects is investigated experimentally. Various structural forms of serpentine interconnects are prepared by photolithography and transfer printing techniques. The electrical properties of serpentine interconnects during stretching are systematically studied and summarized. Besides, a breathable substrate with good biocompatibility and stretchability is used. Based on these studies and the optimization of the design layout, we can guide the selection of wire structures or sensor structures in flexible electronics.
Study on Structural, Electrical and Magnetical Properties of Zn Doped CuAlO2 CeramicsLiu, Yantao; Wang, Ying; Ma, Jianping
doi: 10.1088/1742-6596/2342/1/012010pmid: N/A
To improve the properties of CuAlO2 thin films, the preparation of CuAlO2 ceramics with excellent properties is an important prerequisite, and the optimization of ceramic properties is often achieved by doping. Zn-doped CuAlO2 ceramics were prepared by the solid phase sintering method. The structural, electrical and magnetic properties of Zn-doped CuAlO2 ceramics were systematically studied. The results show that the crystal structure of the as-sintered Zn-doped CuAlO2 was rhombohedral, space group R3m. Grain size of samples grew with the amount of Zn increases, which is related to the enhancement of CuAl2O4 phases in the sample ceramics. The density of doped ceramics changed when increasing Zn-doping concentration compared to undoped ceramics. It reached a minimum 0.96 g/cm3. The resistivity of Zn-doped CuAlO2 ceramic samples climbed with the increase of Zn content, and it can reach 59.6 Ω•cm at 10 mol%. The ferromagnetic behavior was enhanced with increasing the Zn concentration.