期刊：
Review of Scientific Instruments,2020年91(4):043308-1-043308-4 ISSN：0034-6748
通讯作者：
Zhou, H. Y.
作者机构：
[Yu, Y.; Zhou, H. Y.] Univ Sci & Technol China, Sch Phys, Jinzhai Rd 96, Hefei 230026, Peoples R China.;[Xu, P.] Univ South China, Sch Resources Environm & Safety Engn, Changsheng Rd 28, Hengyang 421001, Peoples R China.;[Qiu, C. J.] Univ South China, Sch Mech Engn, Changsheng Rd 28, Hengyang 421001, Peoples R China.
通讯机构：
[Zhou, H. Y.] U;Univ Sci & Technol China, Sch Phys, Jinzhai Rd 96, Hefei 230026, Peoples R China.
摘要：
Large-grain-sized polycrystalline diamond films are fabricated by electron assisted chemical vapor deposition. A pure SP3 carbon bond in the cubic lattice structure is confirmed by Raman spectrum analysis. The grain size is on the order of several hundreds of mu m or larger. Interlaced-finger electrodes are imprinted onto a 6 x 6 mm(2) x 500 mu m film to fabricate the x-ray detector. The width of every finger is 25 mu m, and the distance between nearby fingers is 25 mu m. Strong x ray irradiates when a pulsed current flows through a double-layer nested tungsten wire array in the Z-pinch. This diamond detector now works as one of the main x-ray detectors for the Z-pinch device. The diamond detector is calibrated using a plastic scintillator. The comparison between the signal measured by these two methods confirms that the large-grain-sized polycrystalline diamond is a good candidate for the detection of nanosecond pulsed x ray.
期刊：
Materials Research Express,2019年6(8):086449 ISSN：2053-1591
通讯作者：
Fan, XiangFang
作者机构：
[Yang, Zhen; Qiu, ChangJun; Fan, XiangFang] Univ South China, Sch Mech Engn, Hengyang 421001, Hunan, Peoples R China.;[Yang, Xin] Zhengzhou Univ, Antifatigue Mfg Technol Henan Engn Lab, Zhengzhou 450001, Henan, Peoples R China.;[Wang, XiaoJing; Liu, YanHong] State Power Investment Corp Sci & Technol Res Ins, Beijing 102209, Peoples R China.
通讯机构：
[Fan, XiangFang] U;Univ South China, Sch Mech Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Corrosion prevention;Corrosion resistance;Corrosion resistant alloys;High temperature corrosion;Ion implantation;Ions;Localized corrosion;Metallic matrix composites;Morphology;Plating;Scanning electron microscopy;Software testing;Spectrometers;Surface morphology;Zircaloy;Zirconia;Energy dispersive spectrometers;Experimental conditions;High temperature and high pressure;High temperature and pressure;Multi coating;Multiarc ion plating;X ray diffractometers;Zr-4 alloys;Corrosion resistant coatings
摘要：
目的提高锆合金在高温高压环境中耐动水腐蚀性能。方法利用多弧离子镀技术（MAIP）在Zr-4合金表面分别制备了Al2O3涂层和Cr/Ti AlN复合涂层,利用磁控溅射技术（MS）在Zr-4合金表面制备了Ti N涂层。通过堆外高压釜实验,对比研究了三种不同涂层的耐高温高压动水腐蚀性能,利用自动划痕仪检测膜基结合力,利用XRD分析涂层的物相成分,利用SEM观察涂层腐蚀前后的微观形貌,利用EDS对涂层元素种类与含量进行分析。结果多弧离子镀技术制备的Al2O3涂层和Cr/Ti Al N涂层致密度较高,但表面存在少量大颗粒与微孔洞;磁控溅射技术制备的Ti N涂层均匀平整,表面大颗粒较少。Al2O3涂层、Ti N涂层和Cr/Ti Al N涂层可承受的临界载荷分别为26、16、26.5 N。在实验条件下,Cr/Ti Al N涂层和Ti N涂层表面均发生了剥落或腐蚀现象,且这两种试样表面均检测出大量的Zr O2,而Al2O3涂层几乎未被破坏,基体得到了充分防护。结论利用多弧离子镀技术在Zr-4合金表面制备的Al2O3涂层和Cr/Ti Al N涂层的膜基结合力较高,利用磁控溅射技术制备的Ti N涂层的膜基结合性能较差,其中Al2O3涂层具备良好的耐腐蚀性能,在高温高压动水腐蚀环境中能够有效地保护锆合金基体。
作者机构：
[张聪; 张振远; 李胜; 邱长军] Mechanical Engineering School, University of South China, Hengyang;421000, China;[朱胜] National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing;100072, China;[张聪; 张振远; 李胜; 邱长军] 421000, China
作者机构：
[Chen, Yong; Hu, Liangbin; Qiu, Changjun; He, Bin] Univ South China, Sch Mech Engn, Hengyang 421001, Peoples R China;[Zhou, Lihua; Zhao, Jing] China Natl Nucl Corp, Co 404, Jiayuguan 7351000, Peoples R China;[Li, Yanxi] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
通讯机构：
[Qiu, Changjun] U;[Li, Yanxi] S;Univ South China, Sch Mech Engn, Hengyang 421001, Peoples R China. Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA.
关键词：
multiphase ceramic coatings;temperature of LBE corrosion;LBE corrosion resistance
摘要：
An Al2O3-TiO2 amorphous composite coating with a thickness of 100-120 mu m was fabricated on China low activation martensitic steel (CLAM steel) by oxygen acetylene flame spraying technology and the laser in-situ reaction method. We investigated the microstructures and mechanical properties of the coating after liquid lead-bismuth eutectic (LBE) alloy corrosion under different temperatures for 300 h and found that the corrosion temperature of the LBE had no observable effect on the microstructure and chemical phase of the Al2O3-TiO2 amorphous composite coatings. However, the mechanical properties (micro-hardness and shear strength) of the Al2O3-TiO2 multiphase coating deteriorated slightly with the increase in the immersion temperature of the LBE. As a result of oxygen acetylene flame spraying and laser in-situ reaction technology, it was found that the Al2O3-TiO2 amorphous composite coating exhibits an excellent LBE corrosion resistance, which is a candidate structural material for the accelerator-driven subcritical system (ADS) to handle nuclear waste under extreme conditions.
作者：
Longzhang Shen*;Changjun Qiu;Xiaoyan Wu;Changxing Han;Liangbin Hu
期刊：
The Journal of Engineering,2019年2019(13):402-405 ISSN：2051-3305
通讯作者：
Longzhang Shen
作者机构：
[Longzhang Shen; Changjun Qiu; Changxing Han; Liangbin Hu] School of Mechanical Engineering, University of South China, Hengyang, Hunan, 421001 People's Republic of China;School of Civil Engineering, University of South China, Hengyang, Hunan, 421001 People's Republic of China;[Xiaoyan Wu] School of Mechanical Engineering, University of South China, Hengyang, Hunan, 421001 People's Republic of China<&wdkj&>School of Civil Engineering, University of South China, Hengyang, Hunan, 421001 People's Republic of China
通讯机构：
[Longzhang Shen] S;School of Mechanical Engineering, University of South China, Hengyang, Hunan, 421001 People's Republic of China
关键词：
mobile computing;retail data processing;vending machines;Internet;physical stores;online stores;removable vending machine;key implementation technology;wireless location technology;route planning;mobile technology
摘要：
As a supplement to physical stores and online stores, vending machines are gradually becoming the third largest consumption mode. This article aims to design a removable vending machine, which can automatically move in front of the users to meet their demands, so as to realise a better shopping experience for people. The network structure for the vending machine was analysed and designed, and research on the wireless location technology and route planning of the vending machine is hoped to provide some reference value for the mobile technology of the vending machine.
摘要：
We report a new organics cladding pretreatment technique to fabricate the austenitic steel coating via the laser remanufacturing technology and demonstrate that the organics cladding pretreatment could refine the grains and alleviate defects of the coating remarkably, which consequently enhances significantly the mechanical property. In addition, a new synchronous lateral powder feeding device is employed to prevent the nozzle from being blocked by organics coated powder and also protect the surface of the molten pool from being oxidized. This new organics cladding pretreatment technique may be important for the technological improvement in the mechanical property of coating fabricated via laser remanufacturing method.
