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Ni-Cr合金在富CO气氛中的高温腐蚀研究进展

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金属学报 2024年

作者：谢云 jianqiang zhang 彭晓 School of Materials Science and Engineering University of New South Wales 南昌航空大学材料科学与工程学院

发展富氧燃烧技术和提高锅炉的蒸汽参数可以有效减少燃煤电厂的CO2排放，有助于火力发电行业实现“碳达峰-碳中和”的目标，但采用上述技术对锅炉材料的抗CO2高温腐蚀性能和高温蠕变强度提出了更高要求，镍基合金有望成为优选材料。针... 详细信息

发展富氧燃烧技术和提高锅炉的蒸汽参数可以有效减少燃煤电厂的CO2排放，有助于火力发电行业实现“碳达峰-碳中和”的目标，但采用上述技术对锅炉材料的抗CO2高温腐蚀性能和高温蠕变强度提出了更高要求，镍基合金有望成为优选材料。针对先进超超临界发电机组富氧燃烧烟气高含CO2的特点，本文综述了目前关于Ni-Cr合金在富CO2气氛中的高温腐蚀研究成果，重点介绍了CO2气氛对Ni-Cr合金热生长Cr2O3保护膜的影响，阐明了Ni-Cr合金在CO2气氛中发生碳化的机理，总结了富CO2气氛中的H2O(g)、SO2、环境温度和合金元素对Ni-Cr合金抗高温腐蚀性能的影响，进而提出未来关于Ni-Cr合金在富CO2气氛中的高温腐蚀需深入研究的问题，包括：解析Ni-Cr合金在不同气氛中热生长Cr2O3膜的微观精细结构，探明CO2、H2O(g)和SO2与稀土元素在氧化膜晶界处的交互作用，关注富CO2气氛中的HCl(g)组分对Ni-Cr合金形成Cr2O3保护膜的影响。

关键词： Ni-Cr合金富CO 气氛高温腐蚀

Synthesis and characterization of a novel collector for the desulfurization of fine high-sulfur bauxite via reverse flotation

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Particuology 2023年第8期79卷 64-77页

作者： Gan Cheng jianqiang zhang Huanhuan Su Zhanyun zhang Zhengzhou Non-ferrous Metals Research Institute Co.Ltd. Aluminum Corporation of ChinaZhengzhou450041China College of Chemistry and Chemical Engineering Henan Polytechnic UniversityJiaozuo454000China Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization Henan Polytechnic UniversityJiaozuo454000China

Bauxite is one of the main raw materials in the alumina industry.Fine high-sulfur bauxite flotation desulfurization is a great challenge presently.This study aims to synthesize nanoparticle collectors(NPCs)by emulsion polymerization to improve the abovesaid flotation desulfurization process.The physicochemical properties of high-sulfur bauxite were analyzed,and the experimental conditions for the synthesis of NPCs were optimized.The interaction mechanism between NPCs and pyrite was studied via fundamental analyses including SEM(Scanning Electron Microscope),FT-IR(Fourier Transform Infrared spectoscopy),Zeta-potential,XPS(X-ray Photoelectron Spectroscopy),and wettability.Under the closed-circuit flotation flowsheet of"one roughing-two cleaning-three scavenging",aluminum concen-trate with a yield of 85.91%and sulfur content of 0.56%were obtained using a common collector.However,with the addition of the novel NPC,aluminum concentrate with a yield of 85.70%and sulfur content of 0.36%could be obtained by a simpler flowsheet of"one roughing-one cleaning-two scav-enging".The improvement in flotation performance is suggested to be contributed by the addition of spherical NPC,which induced a rougher and more hydrophobic pyrite surface.

关键词： Bauxite Flotation desulfurization Nanoparticle collector Pyrite

Tribological behavior of shape memory cyanate ester materials and their tunable friction mechanism

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Friction 2023年第10期11卷 1794-1803页

作者： zhangzhang TANG Lihe GUO Mingkun XU Hongwei RUAN Jing YANG Tingmei WANG jianqiang zhang Qihua WANG Yaoming zhang Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China College of Petrochemical Technology Lanzhou University of TechnologyLanzhou 730050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

High-performance polymer friction materials with tunable tribological behavior to fit varied work conditions remain a challenge of widespread interest for a variety of applications.Shape memory polymer exhibits morphing and modulus changing over temperature changing provides a promising material to adjust the friction process.Herein,we investigated the tribological properties of shape memory cyanate ester(SMCE)under different conditions.The SMCE exhibits the tribological behavior of good friction material with stable high coefficient of friction(COF)and a low wear rate.Besides,the COF increases and wear rate decreases with the temperature increasing show the tunable friction property of the SMCE.We propose a new model of wear-compensation through shape recovery to explain the adjustable friction behavior of thermal-responsive polymer from the aspect of shape recovery and energy conversion.This study provides a high-performance friction material and paves the route for the application of shape memory polymer(SMP)in tribology field with tunable property.

关键词： tribological behavior shape memory polymer cyanate ester tunable friction wear rate

Bio‐inspired spontaneous splitting of underwater bubbles along a superhydrophobic open pathway without perturbation

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Droplet 2022年第1期1卷 65-75页

作者： Xin Li jianqiang zhang Xuejiao Wang Dong Lv Chunyan Cao Liqing Ai Xi Yao Department of Biomedical Sciences City University of Hong KongHong KongChina Shenzhen Research Institute of City University of Hong Kong ShenzhenChina

Bubbles are pervasive in aqueous media,and on account of numerous advantages of tiny bubbles,efficient bubble splitting is favorable in a wide range of applications.However,underwater bubble splitting faces a lot of challenges because bubbles tend to coalesce during the rising due to the action of buoyancy and surface energy,and the consumption of considerable external energy is needed.Inspired by the bubble bursting phenomenon on the feathers of high‐speed swimming penguins,we proposed a new bubble splitting strategy based on the energy conversion of bubble transportation on superhydrophobic open pathways.A porous superhydrophobic coating was first developed via a bubbletemplate assisted fabrication method,which provides hierarchical micro/nanostructures and robust air plastron.Gas bubbles can transport along the superhydrophobic open pathways without perturbation,and split into smaller ones by taking advantage of the potential energy contributed by buoyancy.By controlling the superhydrophobic pathway,the size of the split bubbles can be controlled precisely.We also demonstrated that a bubble splitting device could be applied in underwater reactions where an enhanced gas−liquid mass transfer is desired.This bubble splitting strategy may offer new prospects for underwater bubble manipulation and unfold a potential in many bubble‐involved fields.

关键词： splitting bubble underwater

新疆北部早、中侏罗世富油煤分布规律及控制因素

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煤炭科学技术 2024年第1期52卷 244-254页

作者：宁树正张莉徐小涛张建强邹卓中国煤炭地质总局勘查研究总院北京100039

新疆北部富油煤资源丰富,约占全国富油煤资源的一半左右,富油煤资源的合理开发利用,是我国煤制油气用煤资源的重要补充。以往对本区煤炭资源的研究忽视了其油气资源属性,对其富油煤质特征和成因规律认识不清。在系统整理新疆北部6个赋... 详细信息

新疆北部富油煤资源丰富,约占全国富油煤资源的一半左右,富油煤资源的合理开发利用,是我国煤制油气用煤资源的重要补充。以往对本区煤炭资源的研究忽视了其油气资源属性,对其富油煤质特征和成因规律认识不清。在系统整理新疆北部6个赋煤带富油煤地质资料的基础上,补充采样测试数据137组,分析早、中侏罗世富油煤的煤岩煤质特征和分布规律,进一步探讨了富油煤形成的控制因素。通过对焦油产率的研究发现,新疆北部地区东北部、西部、中部部分地区焦油产率相对较高,东北部地区八道湾组高油煤呈不连续带状分布。按照煤的焦油产率由高到低依次为巴里坤–三塘湖赋煤带、准南赋煤带、伊犁赋煤带、准北赋煤带、吐哈赋煤带和准东赋煤带。新疆北部地区早、中侏罗世富油煤的形成主要受到成煤沉积环境、煤化程度和煤的显微组分等主要控制因素的影响。覆水还原环境为富油煤的富集提供了良好的条件,富油煤主要形成于相对覆水还原的泥炭沼泽环境,还原性越强,越利于富油煤生成和富集。煤的焦油产率随着镜惰比(V/I)的增加呈现升高的趋势,并且与挥发分和镜质组呈现正相关关系。镜质组最大反射率在生油高峰之前与焦油产率之间存在正相关性,随着煤化程度的升高,煤的焦油产率逐渐增加。煤的显微组分中含量相对较高的镜质组对焦油产率具有明显的正向促进作用,其中,富氢镜质组为富油煤的发育提供了良好物质基础。

关键词：富油煤焦油产率煤的显微组分煤化程度镜惰比富氢镜质组

快速反射镜的系统辨识与回路成形H∞鲁棒控制

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光学精密工程 2024年第10期32卷 1511-1527页

作者：冯万臣李亮张建强山东科技大学电气与自动化工程学院山东青岛266590 南京大学高端控制与智能运维研发中心江苏苏州215163

音圈式快速反射镜(Voice Coil Actuator-Fast Steering Mirror,VCA-FSM)是星间激光通信中的重要伺服机构,其基于音圈电机进行驱动,FSM内部的柔性支撑结构以及轴间相对运动使系统存在复杂耦合特性,降低了系统的控制性能。对于该问题,本... 详细信息

音圈式快速反射镜(Voice Coil Actuator-Fast Steering Mirror,VCA-FSM)是星间激光通信中的重要伺服机构,其基于音圈电机进行驱动,FSM内部的柔性支撑结构以及轴间相对运动使系统存在复杂耦合特性,降低了系统的控制性能。对于该问题,本文提出了一种基于模型辨识的双轴回路成形H∞解耦控制方法。首先,基于激励与响应数据求解系统脉冲响应序列,构造Hankel矩阵进行系统辨识;其次,考虑系统的耦合特性,基于标称模型进行双轴回路成形H∞鲁棒控制器的设计;最后,基于VCA-FSM伺服控制实验平台,开展方波与正弦扫频实验。实验结果表明:相较于LQG与LQR控制,本文所提出的双轴回路成形H∞鲁棒控制使系统X,Y轴跟踪闭环带宽分别最大提升了54.3 Hz和54.8 Hz,显著降低了系统的耦合特性。本文所提出的控制方法充分提高了VCA-FSM伺服系统的性能,实现了双轴VCA-FSM的高性能解耦控制。

关键词：音圈电机快速反射镜双轴耦合系统辨识 H∞鲁棒控制

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The origin of different morphology of internal oxide precipitates in ferritic and austenitic steels

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Journal of Materials Science & Technology 2023年第30期161卷 88-100页

作者： Zhao Shen Xiaoqin Zeng Shengchuan Wu Hongbing Yu Benjamin M.Jenkins Phani Karamched Michael P.Moody jianqiang zhang You Wang Sergio Lozano-Perez National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Traction Power Southwest Jiaotong UniversityChengdu 610031China Department of Engineering Science University of OxfordParks RoadOX13PJ OxfordUK Department of Materials University of OxfordParks RoadOX13PH OxfordUK School of Materials Science and Engineering University of New South WalesSydneyNSW 2052Australia School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China

The internal oxide precipitates were supposed to be spherical in Wagner’s original theory,while the fol-lowing research demonstrated that this assumption is an exception rather than the truth,which caused deviations in the application of this theory.In this study,the internal oxide precipitates have a needle-like and a near-spherical morphology in a Fe-9Cr ferritic and a Fe-17Cr-9Ni austenitic steels after expo-sure to 600℃ deaerated steam for 600 h,respectively.The nano-to-atomic scale characterization shows that the morphology of the internal oxide precipitates is controlled by the structure of the interfaces be-tween the metal matrix and the internal oxide,while the interface structure is mainly affected by the crystallographic structure of the two phases and their orientation relationship.In addition,the internal oxide precipitation-induced volume expansion and the outward Fe diffusion-induced volume shrink oc-cur simultaneously during the oxidation process.The stress status in the internal oxidation zone(IOZ)is the competing result of the two factors,which could dynamically affect the high-temperature oxidation.The results obtained in this study suggest that there is potential to control the distribution,morphology,and interface structure of the internal oxide precipitates by selecting appropriate base metal and internal oxide-forming element,in order to obtain better high-temperature oxidation-resistant materials.

关键词： Austenitic steel Ferritic steel Oxide precipitates Phase boundary Orientation relationship

基于地学信息图谱的科西河流域滑坡空间分异研究

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地理科学 2024年第6期44卷 1111-1122页

作者：张建强黄宇陈容孔博中国科学院、水利部成都山地灾害与环境研究所四川成都610041 东华理工大学测绘与空间信息工程学院江西南昌330013

以科西河流域滑坡为例,对滑坡信息图谱的概念和内容进行研究,归纳滑坡信息图谱由条件图谱、编目图谱、风险分布图谱和风险管理图谱组成,提出滑坡信息图谱按表达内容和功能的分类方法。基于滑坡条件图谱与编目图谱,采用空间统计的方法,... 详细信息

以科西河流域滑坡为例,对滑坡信息图谱的概念和内容进行研究,归纳滑坡信息图谱由条件图谱、编目图谱、风险分布图谱和风险管理图谱组成,提出滑坡信息图谱按表达内容和功能的分类方法。基于滑坡条件图谱与编目图谱,采用空间统计的方法,揭示了研究区滑坡垂直向和纬度向分布与演化的空间分异规律:滑坡在垂直向200~1 000 m的高程段内为数量高密度区,400~1 200 m和2 800~3 600 m高程段面积比例大,北纬26°42′00″N~26°48′00″N为数量高密度区,26°42′00″N~26°48′00″N和27°24′00″N~27°30′00″N滑坡面积比例较大;相比1992年滑坡,新增滑坡在垂直向200~1 000 m和2 800~3 600 m高程段数量密度高,在3 200~3 400 m高程段面积比例较大,北纬26°48′00″N~26°54′00″N和27°48′00″N~27°54′00″N为高数量密度区,27°24′00″N~27°42′00″N为高面积比例区。

关键词：地学信息图谱滑坡垂直地带性纬度地带性科西河流域

Single‑Layer ZnO Hollow Hemispheres Enable High‑Performance Self‑Powered Perovskite Photodetector for Optical Communication

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Nano-Micro Letters 2021年第4期13卷 259-270页

作者： Xiyan Pan jianqiang zhang Hai Zhou Ronghuan Liu Dingjun Wu Rui Wang Liangping Shen Li Tao Jun zhang Hao Wang Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices School of Microelectronics and Faculty of Physics and Electronic ScienceHubei UniversityWuhan 430062People’s Republic of China

The carrier transport layer with reflection reduction morphology has attracted extensive attention for improving the utilization of light.Herein,we introduced single-layer hollow ZnO hemisphere arrays(ZHAs)behaving light trapping effect as the electron transport layer in perovskite photodetectors(PDs).The singlelayer hollow ZHAs can not only reduce the reflection,but also widen the angle of the effective incident light and especially transfer the distribution of the optical field from the ZnO/FTO interface to the perovskite active layer confirmed by the 3D finitedifference time-domain simulation.These merits benefit for the generation,transport and separation of carriers,improving the light utilization efficiency.Finally,our optimized FTO/ZHA/CsPbBr3/carbon structure PDs showed high self-powered performance with a linear dynamic range of 120.3 dB,a detectivity of 4.2×10^(12) Jones,rise/fall time of 13/28μs and the f_(−3) dB of up to 28 kHz.Benefiting from the high device performance,the PD was demonstrated to the application in the directional transmission of encrypted files as the signal receiving port with super high accuracy.This work uniquely utilizes the features of high-performance self-powered perovskite PDs in optical communication,paving the path to wide applications of all-inorganic perovskite PDs.

关键词： Hemisphere array Perovskite Photodetector Reflection reduction Optical communication