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Oxidation Resistance Coatings of Ir-Zr and Ir by Double Glow Plasma

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Journal of Materials Science & Technology 2014年第3期30卷 268-274页

作者： Zhaofeng Chen wangping wu Xiangna Cong College of Material Science and Technology Nanjing University of Aeronautics and Astronautics

Oxidation resistance coatings of Ir-40 at.% Zr and Ir were produced onto Mo substrates by double glow plasma technology. The oxidation resistances of the coatings were evaluated at high temperature. Ir-Zr coating consisted of two layers： the primary layer close to the substrate was composed of dense columnar grains and the second layer was composed of dense grains of nanometric size. The mass gain of Ir coating above 800℃ was about 1.35% due to the formation of solid IrO2. The mass loss of Ir coating was about 5.3% due to the formation of gaseous oxide IrO3 when being held at 1227 ℃ for 30 min. The substrate was protected more effectively by multilayer than monolayer coating of Ir in oxidizing environment. The Ir-Zr coating was well bonded to the substrate after oxidation at 800℃. After oxidation at 1000℃, the Ir-Zr coating was poorly bonded to the substrate. The oxidation resistance of Ir-Zr coating was poor due to high content of Zr.

关键词： Coating Oxidation resistance Double glow discharge

Synthesis,functionalization,and nanomedical applications of functional magnetic nanoparticles

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Chinese Chemical Letters 2018年第11期29卷 1601-1608页

作者： Zhou Chen Cao wu Zhenfeng Zhang wangping wu Xuefeng Wang Zhiqiang Yu School of Mechanical and Power Engineering Nanjing Tech University International Laboratory for Insulation and Energy Efficiency Materials College of Materials Science and TechnologyNanjing University of Aeronautics and Astronautics Shandong Huaying New Material Co. Ltd. School of Mechanical Engineering Changzhou University Department of Obstetrics and Gynecology Zhujiang HospitalSouthern Medical University Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical SciencesSouthern Medical University

Synthesis of magnetic nanoparticles （MNPs） is one of the most active research areas in advanced materials. MNPs that have magnetic properties and other functionalities have been demonstrated to show great promise in nanomedical applications. This review summarizes the current MNPs preparation, functionalization and stabilization methods. It also analyzes the detailed features of MNPs. And furthermore it highlights some actual case analyses of these MNPs for disease therapy, drug delivery, hyperthermia, bioseparation and bioimaging applications.

关键词： Magnetic nanoparticles Synthesis Functionalization Medical applications Nanomedicine

Low-frequency Internal Friction Behaviour of Zr55Al10Ni5Cu30 Metallic Glass with Different Quenching Temperatures

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Journal of wuhan University of Technology(Materials Science) 2017年第6期32卷 1476-1480页

作者：王知鸷 WANG Dong JIANG Peng wu wangping LI Xiaoyan ZU Fangqiu SHUI Jiapeng School of Mechanical Engineering Changzhou UniversityChangzhou 213016 China School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Science Hefei 230031 China

The correlation between the internal friction behaviour of Zr55 Al10 Ni5 Cu30 BMG samples and their quenching temperatures was investigated. It was found that, below the glass transition temperature, the activation energy decreased with increasing quenching temperature, but in the surpercooled liquid region the activation energy tended to be enhanced with a further increase in the quenching temperature. Besides, there were both anelastic and viscoelastic relaxation for the amorphous alloys. The anelastic behaviour would change into viscoelastic relaxation easily for the samples prepared at higher temperature.

关键词： internal friction quenching temperature metallic glass

Platinum and Iridium Coatings Obtained by Double Glow Plasma Technology

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贵金属 2012年第A1期33卷 146-153页

作者： wu wangping CHEN Zhaofeng CHEN Zhou CONG Xiangna QIU Jinlian College of Material Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Pt and Ir coatings were produced by double glow plasma technology on the surface of Ti alloy substrates. The chemical compositions of the coatings were determined by X-ray diffraction and X-ray photoelectron spectroscopy. The microstructure and morphology of the coatings were observed by scanning electron microscopy. The hardness and elastic modulus of the coatings were estimated by nanoindentation. The measurements of adhesive forces of the coatings were performed with scratch tester. The results indicated that the Pt and Ir coatings displayed the preferred (220) orientation due to the initial nuclei with preferred growth on the surface of the substrates. The interface between the Pt coating and substrate exhibited no evidence of delamination. The Ir coating was composed of irregular columnar grains with many nanovoids at the interface between the coating and substrate. The mean values of hardness for Pt and Ir coatings were 0.9 GPa and 9 GPa, respectively. The elastic modulus of Pt and Ir coatings were 178 GPa and 339 GPa, respectively. The adhesive forces of the Pt and Ir coatings were about 66.4 N and 55 N, respectively. The Pt and Ir coatings adhered well to the Ti alloy substrates.

关键词： noble metal coating platinum iridium double glow plasma

工艺参数对低pH值2.0~2.5柠檬酸水溶液电沉积铼铱基合金薄膜特征影响

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稀有金属材料与工程 2021年第12期50卷 4319-4326页

作者：吴王平常州大学机械与轨道交通学院电化学与腐蚀实验室江苏常州213164

研究了在低pH值2.0~2.5的柠檬酸水溶液中恒电流电沉积富Re+Ir的Re-Ir-Ni合金薄膜特征,以及镀液温度、镀液pH、电流密度和镀液化学组成对薄膜表面形貌、化学成分和晶体结构的影响。采用环境扫描电子显微镜、X射线能谱仪和X射线衍射仪分... 详细信息

研究了在低pH值2.0~2.5的柠檬酸水溶液中恒电流电沉积富Re+Ir的Re-Ir-Ni合金薄膜特征,以及镀液温度、镀液pH、电流密度和镀液化学组成对薄膜表面形貌、化学成分和晶体结构的影响。采用环境扫描电子显微镜、X射线能谱仪和X射线衍射仪分别对合金薄膜的形貌、成分和物相进行了表征。结果表明:在电流密度为60 m A·cm^(-2)、pH为2.0时,获得致密光亮的Re-Ir合金薄膜。在pH=2.5时,提高镀液温度可获得质量良好的合金薄膜,而pH=2.0时,则相反。在镀液温度60~70℃、pH=2.0时,沉积的合金薄膜由非晶相组成;在镀液温度80℃时,薄膜由ReO_(3)相组成。在电流密度为60 mA·cm^(-2)、pH值从2.0增加到2.5时,合金薄膜的晶形结构由非晶态转变为晶态和非晶态的混合结构。结晶相为hcp-Ir_(0.4)Re_(0.6)和hcp-Ni。

关键词：铼铱电沉积形貌成分薄膜

The Practice of No.4 Sintering Machine Putting into Production in Baosteel

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The Practice of No.4 Sintering Machine Putting into Producti...

“第十届中国钢铁年会”暨“第六届宝钢学术年会”

作者： Ma Luowen Wang Xuming wu wangping Ironmaking Plant Baoshan Iron ＆ Steel Co. Ltd.

In order to meet the blast furnace’s need of the sinter and protect the environment in shanghai,Baosteel newly built the No.4 sintering machine that had an area of 600 square *** new sintering machine follows the principle of"advanced technology,mature process,reasonable economy"in technological process and equipment ***’s built and put into operation that will ease the bottle-neck problem of energy saving and environmental protection in sintering process,but also make the material structure of blast furnace tend to be *** the No.4 sintering machine put into production the original sintering machine will be gradually ***.4 sintering machine in Baosteel adopted advanced,mature,stable and reliable technological *** equipment and automatic control of sintering process have achieved domestic first-class level and international advanced level contrast to the similar *** the aspect of energy-saving,it integrated with the mainstream and independent R＆D equipment technology which can meet the"iron and steel industry clean production standards（sintering）"*** the aspect of environmental protection,the use of efficient 4 electric field of electric dust catcher in the head of sintering machine and the the bag pulse dust collector in tail which can meet the stringent environmental protection requirements about dust *** the aspect of flue gas treatment,using semi-dry desulfurization process which operated and maintained more economically and also set aside the denitration *** the aspect of raw material adaptability,the uses of three section of mixer include a strong mixing machine which greatly enhanced the adaptability of raw *** No.4 sintering machine will improve the competitiveness of Baosteel sintering unit and achieve the target of cleaner,low consumption,low cost and high efficiency iron making.

关键词： snitering machine energy saving environmental protection device configuration

来源： cnki会议评论

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宝钢C型封闭料场物料堆积模拟试验

烧结球团 2020年第6期45卷 81-85页

作者：吴旺平宝山钢铁股份有限公司上海200941

C型料场在宝钢投入使用后,其实际料场堆积高度、储存量与设计值存在一定差异。为查明不同设计参数对储量的影响,本文采用试验模拟的方法,参考C1/C2料场料格的实际尺寸,按照一定比例制作带可移动漏斗的投料机实验模型进行模拟试验。结果... 详细信息

C型料场在宝钢投入使用后,其实际料场堆积高度、储存量与设计值存在一定差异。为查明不同设计参数对储量的影响,本文采用试验模拟的方法,参考C1/C2料场料格的实际尺寸,按照一定比例制作带可移动漏斗的投料机实验模型进行模拟试验。结果表明:不同物料品种的极限堆积高度不同,实际生产可根据物料品种设定具体的堆积高度,这样可使现有料仓的储量提升;小车溜槽口与中间主隔墙的距离、投料高度、底板坡度角对料堆参数的影响较大。面对将来储量更大、料仓高度更高的料场设计要求,可以考虑增大溜槽的倾角、减少小车溜槽距中间主隔墙的距离及在投料高度增加后增加底板坡度角来实现。

关键词： C型料场储量堆积高度

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粘性物料对混匀矿生产的影响及控制实践

烧结球团 2016年第2期41卷 47-49,53页

作者：吴旺平宝山钢铁股份有限公司炼铁厂上海201900

随着公司降低配矿成本及提高TFe品位的需要,混匀矿中开始逐步增加精矿粉及厂内回收的杂副原料量,此类粘性物料的配入会引起取料机取料台时低、溜槽堵塞溢料、BH易闷槽及斗轮皮带易压料等一系列问题,导致混匀矿在造堆、输出时故障率持续... 详细信息

随着公司降低配矿成本及提高TFe品位的需要,混匀矿中开始逐步增加精矿粉及厂内回收的杂副原料量,此类粘性物料的配入会引起取料机取料台时低、溜槽堵塞溢料、BH易闷槽及斗轮皮带易压料等一系列问题,导致混匀矿在造堆、输出时故障率持续攀升,制约了混匀矿的生产与输出。原料厂通过改造,解决了相关问题,有效保证了混匀矿生产工艺的顺行,提高了杂副原料和精矿粉在混匀矿大堆中的用量。

关键词：原料厂粘性物料混匀矿生产控制实践

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C型封闭料场在宝钢的投产应用

烧结球团 2017年第2期42卷 53-56,61页

作者：吴旺平宝山钢铁股份有限公司炼铁厂上海200941

OC/OD露天原料场自开工以来已经持续运行30多年,期间不断的提高料场设备机械化和料场环保水平,然而受制约于露天料场堆放,料场受气候影响较大对大气和周围环境造成较大的污染。本文重点阐述C型封闭料场在宝钢股份有限公司直属炼铁厂(以... 详细信息

OC/OD露天原料场自开工以来已经持续运行30多年,期间不断的提高料场设备机械化和料场环保水平,然而受制约于露天料场堆放,料场受气候影响较大对大气和周围环境造成较大的污染。本文重点阐述C型封闭料场在宝钢股份有限公司直属炼铁厂(以下称宝钢)应用后,与原有露天料场输入、贮存和输出方面技术存在的区别,并对投入后存在的问题进行描述。

关键词：原料场 C掣料场料场封闭