您的位置: 专家智库 > >

国家自然科学基金(51271012)

作品数:18 被引量:114H指数:7
相关作者:李松梅刘建华于美王一博张优更多>>
相关机构:北京航空航天大学北京星航机电设备厂中铝科学技术研究院有限公司更多>>
发文基金:国家自然科学基金更多>>
相关领域:金属学及工艺一般工业技术航空宇航科学技术理学更多>>

文献类型

  • 18篇中文期刊文章

领域

  • 10篇金属学及工艺
  • 7篇一般工业技术
  • 3篇航空宇航科学...
  • 2篇理学
  • 1篇化学工程
  • 1篇冶金工程
  • 1篇机械工程
  • 1篇电气工程

主题

  • 5篇合金
  • 4篇阳极
  • 4篇阳极氧化
  • 4篇阳极氧化膜
  • 4篇氧化膜
  • 3篇铝合金
  • 3篇耐蚀
  • 3篇耐蚀性
  • 3篇CORROS...
  • 2篇电化学
  • 2篇硫酸
  • 2篇己二酸
  • 2篇复合材料
  • 2篇ZN-AL
  • 2篇ALUMIN...
  • 2篇CORROS...
  • 2篇FORMAT...
  • 2篇复合材
  • 1篇电池
  • 1篇电化学性能

机构

  • 10篇北京航空航天...
  • 1篇北京星航机电...
  • 1篇中铝科学技术...
  • 1篇北京星航机电...

作者

  • 10篇李松梅
  • 9篇刘建华
  • 7篇于美
  • 2篇李英东
  • 2篇张优
  • 2篇王一博
  • 1篇王博
  • 1篇刘英智
  • 1篇辛长胜
  • 1篇徐晶晶
  • 1篇李彬
  • 1篇陈鑫
  • 1篇薛冰
  • 1篇尹晓琳
  • 1篇王雪飞
  • 1篇田文明
  • 1篇吴量
  • 1篇杨康
  • 1篇吴小雨

传媒

  • 2篇材料工程
  • 2篇北京航空航天...
  • 2篇Chines...
  • 2篇Journa...
  • 2篇Intern...
  • 2篇Journa...
  • 1篇无机化学学报
  • 1篇无机材料学报
  • 1篇航空学报
  • 1篇物理化学学报
  • 1篇复合材料学报
  • 1篇Transa...

年份

  • 1篇2018
  • 1篇2017
  • 8篇2016
  • 3篇2015
  • 5篇2014
18 条 记 录,以下是 1-10
排序方式:
Enhancement of Active Anticorrosion via Ce-doped Zn-Al Layered Double Hydroxides Embedded in Sol-Gel Coatings on Aluminum Alloy被引量:3
2017年
Ce-doped Zn-Al layered double hydroxide(LDH) nanocontainer was synthesized by a co-precipitation method. X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FT-IR), scanning electron microscopy(SEM) and transmission electron microscopy(TEM) methods were used for the characterization of the LDH nanocontainer. The anticorrosion activity of the LDH powders embedded in a hybrid sol-gel coating on aluminum alloy 2024 was investigated by electrochemical impendence spectroscopy(EIS). The results showed that Ce(III) ions were successfully incorporated into LDHs layers. The sol-gel coating modified with Ce-doped Zn-Al LDHs exhibited higher anticorrosion behavior compared with both unmodified and Ce-undoped LDHs containing coatings, which proved the applicability of Ce-doped LDHs in delaying coating degradation and their potential application as nanocontainers of corrosion inhibitors in self-healing coatings.
张优刘建华LI YingdongYU MeiYIN XiaolinLI Songmei
CoFe_2O_4-石墨烯纳米复合材料的制备及微波吸收性能被引量:9
2014年
通过原位共沉淀法即Co2+、Fe2+均匀共沉淀在氧化石墨表面的同时氧化石墨被原位热还原,制备出CoFe2O4-石墨烯(CFO-GN)纳米复合材料。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线能谱(EDS)、热重分析仪(TGA)、傅里叶变换红外光谱(FT-IR)和矢量网络分析仪(VNA)等对复合材料的形貌、结构、元素成分及微波吸收性能进行了表征和分析。结果表明:钴铁氧体(CoFe2O4)纳米粒子均匀分散在石墨烯层间及表面,CoFe2O4-石墨烯纳米复合材料同时具有介电损耗和磁损耗,表现出良好的微波吸收性能。CoFe2O4质量分数分别为88.62%和74.53%的CoFe2O4-石墨烯纳米复合材料,当厚度为2 mm时反射损耗分别可达-11.0 dB和-12.4 dB,反射损耗在-8 dB以下的频宽约为2.0 GHz和4.3 GHz。其中石墨烯含量相对较高的复合材料介电损耗较强,反射损耗强度较大,吸收频带较宽,具有更好的微波吸收性能。
吴小雨李松梅刘建华于美王博
关键词:石墨烯钴铁氧体纳米复合材料微波吸收
Effect of temperature on corrosion behavior of 3003 aluminum alloy in ethylene glycol–water solution被引量:15
2016年
The effect of temperature on the corrosion behavior of 3003 aluminum alloy in ethylene glycol–water solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The surface characterization was observed and determined by scanning electron microscopy (SEM), atomic force microscopy (AFM) and energy dispersive spectrometer (EDS). The results demonstrate that the anodic aluminum dissolution and the cathodic oxygen reduction were accelerated by the increased temperature. However, as temperature was over 60 °C, the solubility and concentration of oxygen decreased, resulting in the inhibition of cathodic reaction. The cathodic reaction rate of 3003 aluminum alloy rose to the maximum at 60 °C. The Warburg impedance in Nyquist diagram diminished and then was replaced by a negative capacitance caused by the absorption of intermediate corrosion product on electrode. On the other hand, after potentiodynamic measurements, 3003 aluminum alloy suffered pitting corrosion. The dissolution of aluminum alloy around secondary phase particles expanded both horizontally and vertically. © 2016 The Authors
Chen XinTian WenmingLi SongmeiYu MeiLiu Jianhua
关键词:DISSOLUTIONPITTINGPOLYOLSSPECTROMETERS
New insights into enhancement of sodium hypochlorite on formation and properties of anodic films on Ti6Al4V alloy
2018年
Anodic films were successfully fabricated on Ti6A14V alloy by anodic oxidation method in an environmental friendly electrolyte with and without sodium hypochlorite. The anodic films were characterized by means of the scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). Results revealed that the addition of sodium hypochlorite leads to the ultrafast growth of oxide films, and results in the significant changes of morphology and thickness. The influence of sodium hypochlorite on formation and crystallization of oxide films as a function of anodizing time was discussed. Meanwhile, potentiodynamic electrochemical tests and dry sliding wear tests were performed to evaluate the corrosion resistance and tribological properties of oxide films. It was found that the oxide film fabricated with the existence of sodium hypochlorite had improved corrosion resistance and tribological properties than the one formed without sodium hypochlorite. Moreover, the effect mechanism of sodium hypochlorite on the growth rate and surface morphologies of oxide films during the anodizing process was discussed. It was found that hypochlorite ions participated in the reaction on anode which causes the rapid growth of oxide films and then affect the whole anodizing process.
李松梅朱孟琪刘建华于美章锦丹
锂硫电池正极用硫/介孔碳复合材料的制备及电化学性能被引量:7
2015年
制备了以十二烷基硫酸钠(SDS)为模板的介孔碳,并将介孔碳和单质硫采用熔融渗透法复合制得硫/介孔碳复合材料。SEM、TEM和BET结果显示介孔碳成直径约为500 nm的大小均一的球体,存在孔径为2 nm的微孔;单质硫充分填充在介孔碳的微孔中。以硫/介孔碳复合物作为锂硫电池正极材料时显示出高的电化学性能。初始放电容量高达1 519 m Ah·g-1,在200 m A·g-1的电流密度下充放电200个循环后依然能保持在835 m Ah·g-1。硫/介孔碳复合材料的高倍率性能和优异的循环稳定性,源于介孔碳良好的导电性及其孔结构的固硫作用。
徐晶晶李彬李松梅刘建华于美
关键词:锂硫电池介孔碳正极材料电化学性能
Graphene-reinforced aluminum matrix composites prepared by spark plasma sintering被引量:14
2016年
Graphene-reinforced 7055 aluminum alloy composites with different contents of graphene were prepared by spark plasma sintering(SPS). The structure and mechanical properties of the composites were investigated. Testing results show that the hardness, compressive strength, and yield strength of the composites are improved with the addition of 1wt% graphene. A clean, strong interface is formed between the metal matrix and graphene via metallurgical bonding on atomic scale. Harmful aluminum carbide(Al_4C_3) is not formed during SPS processing. Further addition of graphene(above 1wt%) results in the deterioration in mechanical properties of the composites. The agglomeration of graphene plates is exacerbated with increasing graphene content, which is the main reason for this deterioration.
Wen-ming TianSong-mei LiBo WangXin ChenJian-hua LiuMei Yu
Microstructure and abrasive wear behaviour of anodizing composite films containing Si C nanoparticles on Ti6Al4V alloy被引量:6
2014年
Anodized composite films containing Si C nanoparticles were synthesized on Ti6Al4 V alloy by anodic oxidation procedure in C4O6H4Na2 electrolyte. Scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray photoelectron spectroscopy(XPS) were employed to characterize the morphology and composition of the films fabricated in the electrolytes with and without addition of Si C nanoparticles. Results show that Si C particles can be successfully incorporated into the oxide film during the anodizing process and preferentially concentrate within internal cavities and micro-cracks. The ball-on-disk sliding tests indicate that Si C-containing oxide films register much lower wear rate than the oxide films without Si C under dry sliding condition. Si C particles are likely to melt and then are oxidized by frictional heat during sliding tests. Potentiodynamic polarization behavior reveals that the anodized alloy with Si C nanoparticles results in a reduction in passive current density to about 1.54×10-8 A/cm2, which is more than two times lower than that of the Ti O2 film(3.73×10-8 A/cm2). The synthesized composite film has good anti-wear and anti-corrosion properties and the growth mechanism of nanocomposite film is also discussed.
李松梅郁秀梅刘建华于美吴量杨康
Zn-Al-[V_(10)O_(28)]^(6-)双层氢氧化物掺杂对LY12铝合金表面溶胶-凝胶涂层性能的影响被引量:3
2014年
采用共沉淀法制备Zn-Al-[V10O28]6-双层氢氧化物(以下简称LDH-V),研究不同添加浓度(0.0、0.25×10-3、0.75×10-3、1.5×10-3、3.0×10-3mol·L-1)的LDH-V对LY12铝合金溶胶-凝胶涂层形貌、耐蚀性的影响.采用扫描电子显微镜(SEM)和傅里叶变换红外(FTIR)光谱研究LDH-V对涂层形貌和结构的影响.运用中性盐雾实验对涂层进行耐蚀性评估.利用电化学方法对涂层在0.05 mol·L-1的NaCl溶液中的腐蚀行为进行研究.探讨加入LDH-V后溶胶-凝胶涂层的耐蚀机理.结果表明,一定量LDH-V的加入不仅可以提高溶胶-凝胶涂层的耐蚀性能,还可对涂层被破坏区域进行自修复,起到延缓铝合金基体腐蚀的作用.然而,当LDH-V的添加溶度超过一定值时,会破坏涂层的完整性并降低涂层的腐蚀防护性能.实验结果表明LDH-V最佳的添加浓度为1.5×10-3mol·L-1.
李松梅尹晓琳刘建华张优薛冰
Effect of sodium tartrate concentrations on morphology and characteristics of anodic oxide film on titanium alloy Ti–10V–2Fe–3Al被引量:1
2016年
The effect of sodium tartrate concentrations on morphology and characteristics of anodic oxide film on titanium alloy was investigated. The alloy substrates were anodized in different concentration solutions of sodium tartrate with the addition of PTFE emulsion and their morphology and characteristics were analyzed. The anodic oxide film presented a uniform petaloid drums and micro-cracks morphology. Additionally, micro-cracks dramatically swelled with the increase of the tartrate concentrations. The thickness of the anodic oxide film increased with the concentrations until the concentration reached 15 g/L. The results of Raman analysis illustrate that all samples have similarity in the crystal structure, consisting of mainly amorphous TiO2, some anatase TiO2and a small amount of rutile TiO2. And the ratios of anatase TiO2and rutile TiO2increase with the concentrations until it reaches 15 g/L. Furthermore, the intensity of the peaks increases with enhanced concentrations until the concentration reaches 15 g/L. The corrosion resistance of the anodic oxide film is increased by the sodium tartrate with higher concentrations before 15 g/L. The coefficient of friction of the anodic oxide film reduces with the concentrations until the concentration reaches 15 g/L, then the coefficient of friction of the anodic oxide film increases with the concentrations. © 2015 The Authors
Ma KunYu MeiLiu JianhuaLi SongmeiWu LiangYao Wenhui
关键词:EMULSIFICATIONMORPHOLOGYSODIUMTRIBOLOGY
酒石酸钠体系中TC18钛合金阳极氧化膜的制备、表征与疲劳性能被引量:6
2014年
在以酒石酸钠为成膜剂的新型无氟环保电解液体系中对TC18钛合金进行阳极氧化,制备出一种钛合金阳极氧化膜。通过扫描电子显微镜和拉曼光谱仪分析了阳极氧化膜的形貌和相结构。采用电化学方法研究了阳极氧化后TC18钛合金的耐腐蚀性能。采用万能高频疲劳试验机进行高频疲劳试验。结果表明:膜层具有沟壑与鼓包的表面形貌。膜层具有非晶态、锐钛矿型及金红石型TiO2结构,可能有板钛矿TiO2结构。阳极氧化后TC18钛合金的耐蚀性有显著的提高。阳极氧化后TC18钛合金的拉伸性能与疲劳性能基本不降低,相比于传统硫酸-磷酸型阳极氧化,拉伸性能和疲劳性能得到了一定的改善。
刘建华杨康于美李松梅吴量郁秀梅
关键词:钛合金阳极氧化膜二氧化钛
共2页<12>
聚类工具0