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增材制造 5

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Ni-Ti-Cu-V四元薄膜库中微观结构和相变的组合合成和高通量表征 Article

Naila M. Al Hasan, Huilong Hou, Suchismita Sarkar, Sigurd Thienhaus, Apurva Mehta, Alfred Ludwig, Ichiro Takeuchi

《工程（英文）》 2020年第6卷第6期页码 637-643 doi: 10.1016/j.eng.2020.05.003

摘要：

过去70年来，基于Ni-Ti的形状记忆合金（shape memory alloy, SMA）已得到广泛使用，但是提高其功能稳定性仍然是实现更稳健和更高级应用的关键。因此，用三元和四元元素合金化来微调SMA 的晶格参数和热滞，成为材料研究中的一个难题。组合材料科学允许从多种表征技术中简化合成过程和数据管理。本研究采用磁控溅射的方法，在热氧化的硅晶片上制备了具有成分分布的Ni-TiCu-V薄膜库。使用高通量波长色散光谱、同步加速器X射线衍射和温度相关的电阻，测量研究并确定了成分相关的相变温度和微观结构。应用中，这些合金成分在给定工作温度范围内提供了选择的灵活性。结合薄膜库的局部微观结构和组成，讨论了四元体系的相图和功能特性的相关性。

关键词： Ni–Ti–Cu–V合金组合材料科学四元合金形状记忆合金薄膜库弹性冷却热弹性冷却相变高通量表征属性映射机器学习

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低碳钛、钒微合金钢中的相间析出

贾涛,魏娇,冯洁,张维娜,刘振宇,王国栋

《中国工程科学》 2014年第16卷第1期页码 88-92

摘要：

针对目前较少关注的Ti-V微合金体系，在Formaster—FII 膨胀仪上进行奥氏体/铁素体两相区等温，在铁素体相变同时获得Ti、V复合相间析出。

关键词： Ti-V微合金钢相间析出等温相变透射电子显微镜

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Zr₆₆Al₉Cu₁₆Ni₉块体非晶合金制备工艺研究

阮许平,阮宏伟

《中国工程科学》 2004年第6卷第5期页码 76-78

摘要：

运用真空电弧炉熔炼合金制备试样，采用三种不同的方法对金属熔体进行处理，试样的X射线衍射晶化相分析结果表明，B₂O₃和Na₂SiO₃的混合物与所选组分的熔体发生了反应，不适合作Zr基合金的包裹物；组分为CaF₂(45%)，AlF₃(50%)，CaO(5%)以及微量的TiO₂的氟盐，由于该净化剂与所选的组分发生了反应，不适合Zr基合金的净化；设备的高真空度、原材料成分的高纯度是促进合金形成非晶态的重要因素。

关键词：块体非晶合金制备工艺玻璃熔盐真空度

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Fabrication and in vivo evaluation of Ti6Al4V implants with controlled porous structure and complex shape

Xiang LI, Yun LUO, Chengtao WANG, Wenguang ZHANG, Yuanchao LI

《机械工程前沿（英文）》 2012年第7卷第1期页码 66-71 doi: 10.1007/s11465-012-0302-y

摘要：

Electron beam melting process was used to fabricate porous Ti6Al4V implants. The porous structure and surface topography of the implants were characterized by scanning electron microscopy (SEM) and digital microscopy (DM). The results showed that the pore size was around 600 and the porosity approximated to 57%. There was about±50 μm of undulation on implants surfaces. Standard implants and a custom implant coupled with porous sections were designed and fabricated to validate the versatility of the electron beam melting (EBM) technique. After coated with bone-like apatite, samples with fully porous structures were implanted into cranial defects in rabbits to investigate the in vivo performance. The animals were sacrificed at 8 and 12 weeks after implantation. Bone ingrowth into porous structure was examined by histological analysis. The histological sections indicated that a large amount of new bone formation was observed in porous structure. The newly formed bone grew from the calvarial margins toward the center of the bone defect and was in close contact with implant surfaces. The results of the study showed that the EBM produced Ti6Al4V implants with well-controlled porous structure, rough surface topography and bone-like apatite layer are beneficial for bone ingrowth and apposition.

关键词： electron beam melting process implant porous structure bone ingrowth

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Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements

《化学科学与工程前沿（英文）》 2022年第16卷第4期页码 461-474 doi: 10.1007/s11705-021-2072-8

摘要： The catalytic hydrogenation of nitroaromatics is an environmentally friendly technology for aniline production, and it is crucial to develop noble-metal-free catalysts that can achieve chemoselective hydrogenation of nitroaromatics under mild reaction conditions. In this work, zinc-modified Ni-Ti catalysts (Ni_xZn_yTi₁) were fabricated and applied for the hydrogenation of nitroaromatics hydrogenation. It was found that the introduction of zinc effectively increases the surface Ni density, enhances the electronic effect, and improves the interaction between Ni and TiO₂, resulting in smaller Ni particle size, more oxygen vacancies, higher dispersion and greater concentration of Ni on the catalyst surface. Furthermore, the electron-rich Ni^δ^– obtained by electron transfer from Zn and Ti to Ni effectively adsorbs and dissociates hydrogen. The results reveal that Ni_xZn_yTi₁ (Ni_0.5Zn_0.5Ti₁) shows excellent catalytic performance under mild conditions (70 °C and 6 bar). These findings provide a rational strategy for the development of highly active non-noble-metal hydrogenation catalysts.

关键词： bimetal strategy oxygen vacancy non-noble metal catalyst hydrogenation aromatic nitro compounds

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Excellent performance of Cu-Mn/Ti-sepiolite catalysts for low-temperature CO oxidation

Yong Song,Lisha Liu,Zhidan Fu,Qing Ye,Shuiyuan Cheng,Tianfang Kang,Hongxing Dai

《环境科学与工程前沿（英文）》 2017年第11卷第2期 doi: 10.1007/s11783-017-0908-8

摘要： Sepiolite is clay mineral with a 2:1 layered structure. Ti-pillars have an impact on physicochemical property of the sample. 30Mn5Cu/Ti-Sep shows excellent catalytic activity for the oxidation of CO. The interaction, reducibility, and oxygen mobility govern the activity. The Ti-modified sepiolite (Ti-Sep)-supported Mn-Cu mixed oxide ( Mn5Cu/Ti-Sep) catalysts were synthesized using the co-precipitation method. The materials were characterized by the X-ray diffraction scanning electron microscope, N adsorption-desorption, H -TPR, O -TPD, and XPS techniques, and their catalytic activities for CO oxidation were evaluated. It was found that the catalytic activities of Mn5Cu/Ti-Sep were higher than those of 5Cu/Ti-Sep and 30Mn/Ti-Sep, and the Mn/Cu molar ratio had a distinct influence on catalytic activity of the sample. Among the Mn5Cu/Ti-Sep samples, the 30Mn5Cu/Ti-Sep catalyst showed the best activity (which also outperformed the 30Mn5Cu/Sep catalyst), giving the highest reaction rate of 0.875 × 10 mmol·g ·s and the lowest and of 56°C and 86°C, respectively. Moreover, the 30Mn5Cu/Ti-Sep possessed the best low-temperature reducibility, the lowest O desorption temperature, and the highest surface Mn /Mn atomic ratio. It is concluded that factors, such as the strong interaction between the copper or manganese oxides and the Ti-Sep support, good low-temperature reducibility, and good mobility of chemisorbed oxygen species, were responsible for the excellent catalytic activity of 30Mn5Cu/Ti-Sep.

关键词： Ti-modified sepiolite Supported Mn-Cu mixed oxide Low-temperature reducibility Strong metal-support interaction CO oxidation

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V-W-Mo-Cu催化剂作用下生物质醇解重油加氢精制研究

邹献武,秦特夫,李改云,黄洛华

《中国工程科学》 2014年第16卷第4期页码 69-73

摘要：为此，本文考察了V-W-Mo-Cu 催化剂作用下重油的加氢精制。结果表明，在330 ℃以上该催化剂才表现出加氢反应活性，在450 ℃时轻油产率最高可到93 %。

关键词：生物质醇解重油加氢 V-W-Mo-Cu催化剂图像处理

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Catalytic hydrolysis of gaseous HCN over Cu–Ni/γ-Al

Linxia Yan, Senlin Tian, Jian Zhou, Xin Yuan

《环境科学与工程前沿（英文）》 2016年第10卷第6期 doi: 10.1007/s11783-016-0872-8

摘要： ? The Cu–Ni/γ-Al O catalyst was prepared to study HCN hydrolysis ? On catalyst calcined at 400°C, the HCN removal efficiency reaches a maximum. ? HCN removal is the highest at 480 min at a H O/HCN volume ratio of 150 ? The presence of CO facilitates HCN hydrolysis and increases NH production. ? O increases the HCN removal and NO production but decreases NH production GRAPHIC ABSTRACT To decompose efficiently hydrogen cyanide (HCN) in exhaust gas, g-Al O -supported bimetallic-based Cu–Ni catalyst was prepared by incipient-wetness impregnation method. The effects of the calcination temperature, H O/HCN volume ratio, reaction temperature, and the presence of CO or O on the HCN removal efficiency on the Cu–Ni/g-Al O catalyst were investigated. To examine further the efficiency of HCN hydrolysis, degradation products were analyzed. The results indicate that the HCN removal efficiency increases and then decreases with increasing calcination temperature and H O/HCN volume ratio. On catalyst calcined at 400°C, the efficiency reaches a maximum close to 99% at 480 min at a H O/HCN volume ratio of 150. The HCN removal efficiency increases with increasing reaction temperature within the range of 100°C–500°C and reaches a maximum at 500°C. This trend may be attributed to the endothermicity of HCN hydrolysis; increasing the temperature favors HCN hydrolysis. However, the removal efficiencies increases very few at 500°C compared with that at 400°C. To conserve energy in industrial operations, 400°C is deemed as the optimal reaction temperature. The presence of CO facilitates HCN hydrolysis andincreases NH production. O substantially increases the HCN removal efficiency and NO production but decreases NH production.

关键词： Hydrogen cyanide Cu–Ni/g-Al₂O₃ Catalytic hydrolysis

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Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

《化学科学与工程前沿（英文）》 2023年第17卷第1期页码 102-115 doi: 10.1007/s11705-022-2179-6

摘要： High-performance and stable electrocatalysts are vital for the oxygen evolution reaction (OER). Herein, via a one-pot hydrothermal method, Ni/Fe/V ternary layered double hydroxides (NiFeV-LDH) derived from Ni foam are fabricated to work as highly active and durable electrocatalysts for OER. By changing the feeding ratio of Fe and V salts, the prepared ternary hydroxides were optimized. At an Fe:V ratio of 0.5:0.5, NiFeV-LDH exhibits outstanding OER activity superior to that of the binary hydroxides, requiring overpotentials of 269 and 274 mV at 50 mA·cm^–2 in the linear sweep voltammetry and sampled current voltammetry measurements, respectively. Importantly, NiFeV-LDH shows extraordinary long-term stability (≥ 75 h) at an extremely high current density of 200 mA·cm^–2. In contrast, the binary hydroxides present quick decay at 200 mA·cm^–2 or even reduced current densities (150 and 100 mA·cm^–2). The outstanding OER performance of NiFeV-LDH benefits from the synergistic effect of V and Fe while doping the third metal into bimetallic hydroxide layers: (a) Fe plays a crucial role as the active site; (b) electron-withdrawing V stabilizes the high valence state of Fe, thus accelerating the OER process; (c) V further offers great stabilization for the formed intermediate of FeOOH, thus achieving superior durability.

关键词： oxygen evolution reaction electrocatalysts ternary layered double hydroxides long-term stability

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Removal of Ni(II) ions from wastewater by micellar enhanced ultrafiltration using mixed surfactants

Vibhandik, Kumudini V. Marathe

《化学科学与工程前沿（英文）》 2014年第8卷第1期页码 79-86 doi: 10.1007/s11705-014-1407-0

摘要： Ni(II) ions were removed from aqueous waste using micellar enhanced ultrafiltration (MEUF) with a mixture of surfactants. The surfactant mixture was the nonionic surfactant Tween 80 (TW80) mixed with the anionic surfactant sodium dodecyl sulfate (SDS) in different molar ratios ranging from 0.1–1.5. The operational variables of the MEUF process such as pH, applied pressure, surfactant to metal ion ratio and nonionic to ionic surfactant molar ratio (α) were evaluated. Rejection of Ni and TW80 was 99% and 98% respectively whereas that for SDS was 65%. The flux and all resistances (fouling resistance, resistance due to concentration polarization) were measured and calculated for entire range of α respectively. A calculated flux was found to be declined with time, which was mainly attributed to concentration polarization rather than resistance from membrane fouling.

关键词： MEUF Ni (II) ions membrane resistance concentration polarization mixed surfactants

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Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

《化学科学与工程前沿（英文）》 2012年第6卷第1期页码 38-46 doi: 10.1007/s11705-011-1167-z

摘要： An effective method for the regeneration of thermally deactivated commercial monolith SCR catalysts was investigated. Two types of regenerated solutions, namely NH Cl (1 mol/L) and dilute H SO (0.5 mol/L), were employed to treat the used catalyst. The effects of temperature and the regeneration process on the structural and textural properties of the catalysts were determined by X-ray diffraction, scanning electron microscopy, N adsorption/desorption, elemental analysis and Fourier transform infrared spectroscopy. The results suggest that the anatase phase of the used catalyst is maintained after exposure to high temperatures. Some of the catalytic activity was restored after regeneration. The catalyst regenerated by aqueous NH Cl had a higher activity than that of the catalyst treated by dilute H SO . The main reason is that the NH generated from the decomposition of NH Cl at high temperatures can be adsorbed onto the catalyst which promotes the reaction. The aggregated V O were partially re-dispersed during the regeneration process, and the intrinsic oxidation of ammonia with high concentrations of O is a factor that suppresses the catalytic activity.

关键词： V₂O₅-WO₃/TiO₂ catalysts thermal deactivation regeneration NH₄Cl dilute H₂SO₄ solution

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高酸性腐蚀气田用BG2250-125镍基合金油管开发

沈琛,张忠铧,张春霞

《中国工程科学》 2010年第12卷第10期页码 35-38

摘要：

综述了高酸性腐蚀气田用BG2250镍基合金油井管国产化开发进展情况。通过与国外同类产品的实物质量分析以及成分、电弧炉冶炼、电渣重溶、锻造、热挤压、冷轧、特殊扣设计与加工、腐蚀评价等工艺技术的研究，宝钢开发的BG2250-125等镍基合金油管的产品质量达到了国际同类产品的先进水平

关键词：镍基合金油管酸性井产品性能

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甘肃金川铜镍（铂）硫化物矿床岩浆通道前进方向探讨

刘美玉,苏尚国,宋晨,蔡楠

《中国工程科学》 2015年第17卷第2期页码 73-84

摘要：整体说来，自西向东，Pd/Ir-Ni/Cu在各矿体间呈递减趋势，分析认为造成这种规律的原因是矿石的形成经历了单硫化物固溶体（MSS）的分离结晶作用。

关键词：金川；Cu-Ni-（PGE）；硫化物矿床；岩浆通道成矿系统；前进方向；定量化结构分析

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东天山地区铜镍矿找矿评价指标探讨

刘欢,焦建刚,张国鹏、高栋、邵乐奇

《中国工程科学》 2015年第17卷第2期页码 106-112

摘要：

岩浆铜镍硫化物矿床主要赋存在镁铁-超镁铁质岩体中，赋矿岩体规模一般较小，矿体主要赋存在岩体的下盘，形成了很多小岩体大矿床的现象。世界上镁铁-超镁铁质岩体很多，如何判定岩体深部是否具有成矿潜力一直是大家关注的焦点。本文在前人大量研究的基础上，以东天山地区为例，对比剖析了成矿与不成矿镁铁-超镁铁质岩体的地质、地球化学特征，试图从理论上判别岩体的成矿潜力。提出成矿的超镁铁质岩体一般具有明显右倾的稀土配分曲线，岩体属于多期岩浆侵入形成，岩石中含一定量的斜方辉石，造岩矿物颗粒大小具有明显变化等找矿评价指标

关键词：铜镍硫化物矿床；找矿评价指标；东天山

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中国铜镍（铂族）岩浆硫化物矿床主要成矿构造背景

钱壮志,段俊,冯延清,徐刚,张江江

《中国工程科学》 2015年第17卷第2期页码 19-28

摘要：

本文基于中国铜镍（铂族）岩浆硫化物矿床区域分布和找矿新进展及新的研究资料，对中国该类矿床的主要成矿构造背景进行总结研究，归纳出大火成岩省、克拉通边缘裂谷或陆内拉张环境、造山带碰撞后伸展环境和活动大陆边缘或岛弧4类重要成矿构造背景，与世界上该类矿床成矿构造背景比照，中国尚缺绿岩带、蛇绿岩带等构造背景的矿床实例。另外，中国的造山带碰撞后伸展环境大规模成矿也是世界上罕见的。由此，今后找矿勘查部署上应充分考虑上述4类成矿构造背景中的小岩体。

关键词：铜镍(铂族)；岩浆硫化物矿床；成矿构造背景；主要类型；中国

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标题作者时间类型操作

Ni-Ti-Cu-V四元薄膜库中微观结构和相变的组合合成和高通量表征

Naila M. Al Hasan, Huilong Hou, Suchismita Sarkar, Sigurd Thienhaus, Apurva Mehta, Alfred Ludwig, Ichiro Takeuchi

期刊论文

低碳钛、钒微合金钢中的相间析出

贾涛,魏娇,冯洁,张维娜,刘振宇,王国栋

期刊论文

Zr₆₆Al₉Cu₁₆Ni₉块体非晶合金制备工艺研究

阮许平,阮宏伟

期刊论文