Most cited articles
Tang Huiping Northwest Institute for Nonferrous Metal Research
,
P O Box
,
Xi''''an Shaanxi
,
P R China Zhang Zhengde
1997(1):1-6.
Abstract:
The status of research, production and application of porous metal materials is introduced It is pointed out that the development of porous metal materials should be industrialization on a large scale, and the precision grade of products should be seriation
The status of research, production and application of porous metal materials is introduced It is pointed out that the development of porous metal materials should be industrialization on a large scale, and the precision grade of products should be seriation
2004, 33(6):561-565.
Abstract:
The research and development of heat resistant Mg alloys were reviewed and alloying these alloys was mentioned as the basic method improving the properties as well as Cu, Ca, Sc and Sr, rare-earth elements. Alloying, extrusion and semi-solid process were highlighted to introduce the sliping of prismatic plane (1010) and pyramidal plane (1011) which can benefit the mechanical properties. Superplastic process was the effective method to fabricate the heat resistant Mg alloys parts.
The research and development of heat resistant Mg alloys were reviewed and alloying these alloys was mentioned as the basic method improving the properties as well as Cu, Ca, Sc and Sr, rare-earth elements. Alloying, extrusion and semi-solid process were highlighted to introduce the sliping of prismatic plane (1010) and pyramidal plane (1011) which can benefit the mechanical properties. Superplastic process was the effective method to fabricate the heat resistant Mg alloys parts.
1997(2):1-7.
Abstract:
系统介绍了钛基复合材料的最新研究和发展，涉及非连续颗粒增强和连续纤维增强两大类钛基复合材料近１０多年来的研究成果和发展趋势；重点评述了钛基材和增强剂的选择，增强剂与基体界面反应的研究，扩散障碍涂层技术和钛基复合材料制造工艺的研究和发展，讨论了钛基复合材料的应用前景。
系统介绍了钛基复合材料的最新研究和发展，涉及非连续颗粒增强和连续纤维增强两大类钛基复合材料近１０多年来的研究成果和发展趋势；重点评述了钛基材和增强剂的选择，增强剂与基体界面反应的研究，扩散障碍涂层技术和钛基复合材料制造工艺的研究和发展，讨论了钛基复合材料的应用前景。
2002(4):312-314.
Abstract:
Nanocrystalline CeO2 was prepared by hydrothermal crystallization method. XRD analysis indicates that the structure of the synthesized CeO2 is cubic with space group O5H FM3M. TEM photos reveals that nanocrystalline CeO2 is spherical in shape with a mean particle size of less than 100 nm. It was found that with increase of hydrothermal treatment temperatures the relative density of CeO2 nanocrystalline increased.
Nanocrystalline CeO2 was prepared by hydrothermal crystallization method. XRD analysis indicates that the structure of the synthesized CeO2 is cubic with space group O5H FM3M. TEM photos reveals that nanocrystalline CeO2 is spherical in shape with a mean particle size of less than 100 nm. It was found that with increase of hydrothermal treatment temperatures the relative density of CeO2 nanocrystalline increased.
2004, 33(1):11-14.
Abstract:
The current research status of tungsten-copper composites used at high temperature in China had been expounded, which involves the fabricating technique, high temperature strength, burning erosive resistance, thermo-shock resistance and dimensional stability, etc. The properties of material have been developing as the sintering-melting method had been used. The high temperature strength was objected to the strength of tungsten skeleton. The thermo-shock resistance was subjected to the Cu-content and its well-distributed in material after melting-penetrating. And through the technologys improving, the burning erosive resistance and dimensional stability in the course of sintering had well been developed.
The current research status of tungsten-copper composites used at high temperature in China had been expounded, which involves the fabricating technique, high temperature strength, burning erosive resistance, thermo-shock resistance and dimensional stability, etc. The properties of material have been developing as the sintering-melting method had been used. The high temperature strength was objected to the strength of tungsten skeleton. The thermo-shock resistance was subjected to the Cu-content and its well-distributed in material after melting-penetrating. And through the technologys improving, the burning erosive resistance and dimensional stability in the course of sintering had well been developed.
2002(2):122-124.
Abstract:
Nanostructured AgSnO 2 powders were prepared by high energy ball milling. After hot press sintering, the nanostructured AgSnO 2 contact materials were obtained. Compared with the AgSnO 2In 2O 3 prepared by internal oxidation with clustered at crystal boundary, the nonostructured AgSnO 2 Composite bulk has the microstructure with nano scaled SnO 2 particles dispersed on the silver matrix.
Nanostructured AgSnO 2 powders were prepared by high energy ball milling. After hot press sintering, the nanostructured AgSnO 2 contact materials were obtained. Compared with the AgSnO 2In 2O 3 prepared by internal oxidation with clustered at crystal boundary, the nonostructured AgSnO 2 Composite bulk has the microstructure with nano scaled SnO 2 particles dispersed on the silver matrix.
2000(2):141-143.
Abstract:
采用溶胶－凝胶法和热压烧结相结合的新工艺制备超细Ａ１２Ｏ３ｐ弥散强化铜材料，并对其烧结态和退火态的显微组织和性能进行了观察与分析，结果表明：用这种工艺制和轩的弥散强化铜材料具有高致密度、高强度、高电导率及高温热稳定性等优点；Ａ１２Ｏ３ｐ颗粒平均尺寸约０．１ｕｍ，颗粒间距０．３ｕｍ；９００℃退火后性能改变很小。
采用溶胶－凝胶法和热压烧结相结合的新工艺制备超细Ａ１２Ｏ３ｐ弥散强化铜材料，并对其烧结态和退火态的显微组织和性能进行了观察与分析，结果表明：用这种工艺制和轩的弥散强化铜材料具有高致密度、高强度、高电导率及高温热稳定性等优点；Ａ１２Ｏ３ｐ颗粒平均尺寸约０．１ｕｍ，颗粒间距０．３ｕｍ；９００℃退火后性能改变很小。
Xi Zhengping
,
Zhou Lian
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Li Jian
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Liao Jichang
,
Wu Lujian
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Li Yalu
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Li Jianping
,
Zhang Yanrong
1998(6):317-321.
Abstract:
The current status of development, fundamental characteristics, and applications of metal fibres are discussed. It is found that many new types of material have been developed by using metal fibres,and that these materials have direct impact on the human daily life. Progress in metal fibre research and fibre products in China are described. China has a considerable competitive advantage in research and development of metal fibres and fibre products. There is a fairly good technical bases for predicting significant advances in the industrialization of metal fibres and fibre products in China.
The current status of development, fundamental characteristics, and applications of metal fibres are discussed. It is found that many new types of material have been developed by using metal fibres,and that these materials have direct impact on the human daily life. Progress in metal fibre research and fibre products in China are described. China has a considerable competitive advantage in research and development of metal fibres and fibre products. There is a fairly good technical bases for predicting significant advances in the industrialization of metal fibres and fibre products in China.
1994(1):7-15.
Abstract:
brief introduction is presented for the recent advances in methods of preparing metal fibers including bundle-drowing. chatter- machining and melt-spinning. The status of study and applicataion of metal fibers is also described in this paper.
brief introduction is presented for the recent advances in methods of preparing metal fibers including bundle-drowing. chatter- machining and melt-spinning. The status of study and applicataion of metal fibers is also described in this paper.
2005, 34(2):287-290.
Abstract:
TiO2 nanotube was synthesized successfully by hydrothermal process, using TiO2 powder and NaOH as the precurser. The micro-morphology and optical properties were characterized by XRD, SEM, HRTEM, UV Absorption Spectra Analyzer and Spectroradiometer, and the formation mechanism was also studied. The results showed that the product is anatase TiO2 nanotube with multiple layers wall, 10 nm~50 nm in the out-diameter, several micron to tens in the length, and opened in both of ends. The formation mechanism of the tube is coordinate with 3-2-1D model. The UV Absorption Spectra and PL spectra showed that the TiO2 nanotubes present blue-shift phenomenon compared to the raw material. The PL spectra also showed that at the visible band the luminous intensity of the TiO2 nanotubes increased obviously.
TiO2 nanotube was synthesized successfully by hydrothermal process, using TiO2 powder and NaOH as the precurser. The micro-morphology and optical properties were characterized by XRD, SEM, HRTEM, UV Absorption Spectra Analyzer and Spectroradiometer, and the formation mechanism was also studied. The results showed that the product is anatase TiO2 nanotube with multiple layers wall, 10 nm~50 nm in the out-diameter, several micron to tens in the length, and opened in both of ends. The formation mechanism of the tube is coordinate with 3-2-1D model. The UV Absorption Spectra and PL spectra showed that the TiO2 nanotubes present blue-shift phenomenon compared to the raw material. The PL spectra also showed that at the visible band the luminous intensity of the TiO2 nanotubes increased obviously.
2006, 35(7):1167-1171.
Abstract:
Electrospinning technique is playing an important role and has been regarded as one of the simplest and most effective techniques in the field of nanofibers fabrication. Various kinds of nanofibers have been prepared using this method, including polymers and inorganic nanofibers. In this paper, a comprehensive review is presented on the fabrication of inorganic nanofibers using electrospinning technique, including its mechanism, modification and effecting factors. In addition, the applications and future trends are presented and discussed for the inorganic nanofibers in this paper.
Electrospinning technique is playing an important role and has been regarded as one of the simplest and most effective techniques in the field of nanofibers fabrication. Various kinds of nanofibers have been prepared using this method, including polymers and inorganic nanofibers. In this paper, a comprehensive review is presented on the fabrication of inorganic nanofibers using electrospinning technique, including its mechanism, modification and effecting factors. In addition, the applications and future trends are presented and discussed for the inorganic nanofibers in this paper.
2002(3):229-231.
Abstract:
CeO 2 nanoparticles hydrosol was synthesized by colloidal chemical method. The optimum experiment conditions for the preparation of CeO 2 nanoparticles hydrosol were discussed. The effects of pH values, the reactant concentration and temperature on peptization process were studied. TEM photos showed that the CeO 2 nanoparticles were spherical in shape and the size was about 3nm. Particle size distribution was in narrow range, and no agglomerates were observed. ED images indicated that the CeO 2 nanoparticles were polycrystalline structure, and some of CeO 2 were monocrystal particles.
CeO 2 nanoparticles hydrosol was synthesized by colloidal chemical method. The optimum experiment conditions for the preparation of CeO 2 nanoparticles hydrosol were discussed. The effects of pH values, the reactant concentration and temperature on peptization process were studied. TEM photos showed that the CeO 2 nanoparticles were spherical in shape and the size was about 3nm. Particle size distribution was in narrow range, and no agglomerates were observed. ED images indicated that the CeO 2 nanoparticles were polycrystalline structure, and some of CeO 2 were monocrystal particles.
2002(1):8-12.
Abstract:
Aluminum nitride(AlN) has excellent thermal, electrical and mechanical properties, and attracts more and more attention. This paper relates the development of fabricating high thermal conductivity AlN ceramics process, including powder preparation, molding, sintering. It is suggested that research on low cost powder preparation technology and net shape molding technology are valuable.
Aluminum nitride(AlN) has excellent thermal, electrical and mechanical properties, and attracts more and more attention. This paper relates the development of fabricating high thermal conductivity AlN ceramics process, including powder preparation, molding, sintering. It is suggested that research on low cost powder preparation technology and net shape molding technology are valuable.
2003(4):272-275.
Abstract:
The titania film was formed by micro -arc oxidation on titanium alloys.The microstructure and chemical composition were studied by SEM,XRD.At the same time ,the hardness,elastic modulus and scratch resista nce measurement were carried out as well by nano -indentation and scratch machine.The results show that the micro -arc oxidation film which is consisted of cry stal and little amorphous phase has nano structure .The hardness and elastic modulus are 0.76GPa and 34.6GPa respectively.There is no film destroyed unless under high load.
The titania film was formed by micro -arc oxidation on titanium alloys.The microstructure and chemical composition were studied by SEM,XRD.At the same time ,the hardness,elastic modulus and scratch resista nce measurement were carried out as well by nano -indentation and scratch machine.The results show that the micro -arc oxidation film which is consisted of cry stal and little amorphous phase has nano structure .The hardness and elastic modulus are 0.76GPa and 34.6GPa respectively.There is no film destroyed unless under high load.
1995(3):18-25.
Abstract:
A definition of functioually gradient material(FGM) is given.The current status of the study on material design, material fabrication and material evaluation is introduced.Application forecasts of the materials in the fields of aeronautic and space transportation, biomediciue, mechanical engineering,optics,electromaguetism,chemical industry and nuclear energy engineering etc.are described.Finally,the prospects of the study are discussed in this poper.
A definition of functioually gradient material(FGM) is given.The current status of the study on material design, material fabrication and material evaluation is introduced.Application forecasts of the materials in the fields of aeronautic and space transportation, biomediciue, mechanical engineering,optics,electromaguetism,chemical industry and nuclear energy engineering etc.are described.Finally,the prospects of the study are discussed in this poper.
1997(5):1-6.
Abstract:
介绍了中国钛工业发展的历史，钛的资源和钛的应用情况以及钛合金发展所取得的进展，中国钛工业经历了４０余年的研究和发展，目前产能已达到年产３６５０ｔ海绵钛和２８００ｔ钛加工材的生产能力，并建立了一个从海绵钛生产到钛锭熔炼，铸造，加工及钛设备制造的完整的钛工业体系，钛材已被广泛用於化学，宇航，航空等各个工业部门。中国已成长为世界上一个重要的钛工业国，同时还总结了中国钛工业发展的经验和教训；展望了中国钛工
介绍了中国钛工业发展的历史，钛的资源和钛的应用情况以及钛合金发展所取得的进展，中国钛工业经历了４０余年的研究和发展，目前产能已达到年产３６５０ｔ海绵钛和２８００ｔ钛加工材的生产能力，并建立了一个从海绵钛生产到钛锭熔炼，铸造，加工及钛设备制造的完整的钛工业体系，钛材已被广泛用於化学，宇航，航空等各个工业部门。中国已成长为世界上一个重要的钛工业国，同时还总结了中国钛工业发展的经验和教训；展望了中国钛工
2005, 34(7):1013-1016.
Abstract:
研究了Ce对镁及镁合金晶粒细化效果和力学性能的影响。结果表明：纯镁结晶时易形成粗大的柱状晶和扇形晶，加入微量稀土元素Ce后，晶粒被明显细化，柱状晶全部转化成等轴晶。在AZ31合金中添加微量稀十元素Ce，晶粒由未细化前的约300μm下降到约30μm。稀土Ce在镁及AZ31合金中的固溶度很小，在凝固过程中固／液界面前沿Ce容易富集引起成分过冷形成新形核带导致晶粒细化。凝固过程中溶质再分配造成固液界面前沿成分过冷度增大是稀土元素细化镁及镁合金的主要机理。
研究了Ce对镁及镁合金晶粒细化效果和力学性能的影响。结果表明：纯镁结晶时易形成粗大的柱状晶和扇形晶，加入微量稀土元素Ce后，晶粒被明显细化，柱状晶全部转化成等轴晶。在AZ31合金中添加微量稀十元素Ce，晶粒由未细化前的约300μm下降到约30μm。稀土Ce在镁及AZ31合金中的固溶度很小，在凝固过程中固／液界面前沿Ce容易富集引起成分过冷形成新形核带导致晶粒细化。凝固过程中溶质再分配造成固液界面前沿成分过冷度增大是稀土元素细化镁及镁合金的主要机理。
2000(6):361-365.
Abstract:
Laser rapid prototyping based on metallic powders is a new manufacturing technology, which combines with computer aided design, laser cladding and rapid prototyping. The deposition mechanism, deposition system as well as the newest advance in this technology are presented. Some prospects are also predicted.
Laser rapid prototyping based on metallic powders is a new manufacturing technology, which combines with computer aided design, laser cladding and rapid prototyping. The deposition mechanism, deposition system as well as the newest advance in this technology are presented. Some prospects are also predicted.
2000(6):366-369.
Abstract:
The developmental history and application of magnetostrictive materials are introduced. Their characteristics are compared with those of Pb(Zr,Ti)O 3 piezoelectric (PZT) ceramics. The results of some research on ultraprecise micromoving actuators and optical fiber magnetoelastic sensors conducted in our laboratory are presented. Future applications of these materials are also discussed.
The developmental history and application of magnetostrictive materials are introduced. Their characteristics are compared with those of Pb(Zr,Ti)O 3 piezoelectric (PZT) ceramics. The results of some research on ultraprecise micromoving actuators and optical fiber magnetoelastic sensors conducted in our laboratory are presented. Future applications of these materials are also discussed.
