Browsing 材料学院－已发表论文 by Title
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1800℃烧成含铁SiC纤维的微观结构分析
(2013-05-15)以羰基铁为铁源,制备了含铁SIC纤维,并经1800℃x5MIn烧成。分别以扫描电子显微镜(SEM)、透射电子显微镜(TEM)及其能谱仪(EdS)表征了烧成纤维的微观结构和微区成分。结果表明,烧成纤维由致密的晶粒区及较为疏松的晶间区两部分组成。前者的主要成分是SIC和fE;后者则包括游离碳及SICXOy。烧成纤维的微观组织仍然致密,表明其所含的少量铁具有明显促进SIC纤维高温致密化的作用。 -
2-去氧-D-葡萄糖的离子色谱法分析
(2010-11-15)开发一种分析2-去氧-D-葡萄糖样品的离子色谱方法,该方法可准确定量2-去氧-D-葡萄糖样品的含量.经色谱分离条件优化,选用DIONEX CarboPac PA10(4 mm×250 mm)色谱柱,以18 mmol/L NaOH溶液为流动相,流速为0.8 mL/min,用脉冲安培检测器检测,实现2-去氧-D-葡萄糖、葡萄糖和氨基葡萄糖3种结构极为相似单糖的高效分离,建立起2-去氧-D-葡萄糖的离子色谱法.2-去氧-D-葡萄糖在0.618 ... -
2D C/SiC复合材料高温蠕变损伤的显微CT分析
(2011-09-15)利用显微CT针对自愈合2DC/SiC复合材料高温蠕变试验前后的内部孔隙率进行了分。析结果表明,显微CT技术能较好地探测高温蠕变前后2DC/SiC复合材料内部孔隙率变化,从孔隙率的变化初步证实了BxC组元对2DC/SiC复合材料有一定的自愈合作用。利用显微CT技术证实了高温下的拉伸应力不会导致2DC/SiC复合材料中新的裂纹产生。 -
2DC/SiC复合材料高温蠕变损伤的显微CT分析
(2011)利用显微CT针对自愈合2dC/SIC复合材料高温蠕变试验前后的内部孔隙率进行了分。析结果表明,显微CT技术能较好地探测高温蠕变前后2dC/SIC复合材料内部孔隙率变化,从孔隙率的变化初步证实了bXC组元对2dC/SIC复合材料有一定的自愈合作用。利用显微CT技术证实了高温下的拉伸应力不会导致2dC/SIC复合材料中新的裂纹产生。 -
3-(三聚氧乙烯)取代聚噻吩的合成与聚集增强发光
(2016-02-20)通过2-溴-5-碘-3-(三聚氧乙烯)取代噻吩大分子单体的合成、镍催化缩聚等,得到Mn为6000的3-(三聚氧乙烯)取代聚噻吩(P3OET).在非选择性良溶剂四氢呋喃中,P3OET溶液发射橙色荧光.在选择性极性溶剂诱导作用下,P3OET在水中自组装形成稳定的球形自组装体,荧光峰相对红移而发射橙红色光,伴随荧光强度减弱;而在甲醇中,P3OET形成丝状自组装体,荧光峰相对蓝移而发射亮黄色光,但是荧光强度增强,表现出聚集增强发光现象.类似于含 ... -
304不锈钢表面十七氟癸基三甲氧基硅烷的缓蚀性能研究
(2019-02-15)采用电化学方法对十七氟癸基三甲氧基硅烷在304不锈钢表面的缓蚀性能进行了研究,结果发现,十七氟癸基三甲氧基硅烷对304SS有明显的缓蚀作用,增大了304不锈钢表面的电荷转移电阻,降低了自腐蚀电流密度并且提高了点蚀电位,缓蚀效率高达96%。 -
A calcium ion-imprinted porous film prepared from a cellulose-alginate composite
(Kluwer Academic Publishers, 2014)An ion-imprinted (IIP) film has been successfully prepared in this work. Firstly, mixture solution of cellulose and alginate was obtained by dissolving those polymers in a NaOH/urea aqueous solution. Then the mixture ... -
A carbon-free sol-gel method for preparation of Lu3Al 5O12: Ce3+ phosphors for potential applications in laser scintillators and LEDs
(Elsevier, 2014 Octob)Ce3+-doped lutetium aluminum garnet (LuAG) phosphors have been successfully synthesized by a facile carbon-free sol-gel method without using any organic gelling agent. Phase transitions from gel to LuAG were well investigated ... -
A comparative study of pyrolyzed and doped cobalt-polypyrrole eletrocatalysts for oxygen reduction reaction
(APPL SURF SCI, 2012-02-01)The pyrolyzed carbon supported cobalt polypyrrole (Co-PPy/C) catalysts were prepared without or with three selected dopants, namely, sodium dodecylbezene sulfonate (DBSNa), sodium paratoluene sulfonate (TSNa) and sodium ... -
A comparative study of the oxidation behavior of Cr2N and CrN coatings
(ELSEVIER SCIENCE SA, 2013-Oct 1)A comparative study of the oxidation behavior of Cr2N and CrN coatings was investigated in air at temperatures ranging from 700 degrees C to 1000 degrees C including phase structure, surface and cross-sectional morphologies, ... -
A facile approach to fabrication of well-dispersed NiO-ZnO composite hollow microspheres
(Royal Society of Chemistry, 2013-12-14)A novel, facile and template-free approach was developed for the fabrication of amorphous zinc-nickel citrate hollow microspheres and crystalline well-dispersed NiO-ZnO composite hollow microspheres. In this approach, ... -
A Facile Route to Construct SiCO Nanospheres with Tunable Sizes
(WILEY-BLACKWELL, 2014 JUL-A)We report a facile route to synthesize SiCO nanospheres using Pluronic F127/ polyvinylsilazane (PVSZ) mixed micelles as a template, in which PVSZ selectively swells with the PEO core of the F127 micelles. The thermal ... -
A facile solution approach for the preparation of Ag@Ni core-shell nanocubes
(ELSEVIER SCIENCE BV, 2014-02-01)We demonstrate that Ag@Ni core-shell crystals with a cubic morphology can be prepared via a non-aqueous method that employs oleylamine to reduce Ni precursors into metallic Ni which is deposited on the pre-synthesized Ag ... -
A four-state memory cell based on magnetoelectric composite
(2008-07)A four-state memory can store four states in each memory cell. We designed a four-state memory cell using Co/PZT magnetoelectric composite and observed a broad magnetoelectric hysteretic output loop on applying magnetic ... -
A generalized screw dislocation in a piezoelectric trimaterial body
(2007,26(1-)A generalized screw dislocation in the piezoelectric trimaterial with two parallel plane interfaces is studied. The Burgers vector of the generalized screw dislocation normal to the isotropic base plane and a discontinuous ... -
A high performance flexible recyclable supercapacitor with polyaniline by casting in unconventional proportion
(2019-12-01)Abstract(#br)A new type of recyclable flexible solid-state supercapacitor with good electrochemical performance and folder ability is produced through a facile method. Polyvinylidene fluoride - acetylene black - polyethylene ... -
A high-resolution study of resonant Auger decay processes in N2O after core electron excitation from terminal nitrogen, central nitrogen and oxygen atoms to the 3 pi LUMO
(2007)Decay spectra of N2O following excitation to the N terminal (Nt). pi*, N central (N-c). pi* and O 1s -> pi* intermediate states are reported. The final states reached after participator decay show resonant enhancement ... -
A mathematical model for diffusion-controlled monolithic matrix coated with outer membrane system
(2001-02)A release model for diffusion-controlled monolithic matrix coated with outer membrane system is proposed and solved by using the refined double integral method. The calculated results are in satisfactory agreement with the ...