Materials Literature
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Ta2O5 substituted polycrystalline BaTi2O5 (BT2T) was prepared from the raw materials of BaCO3, TiO2 and Ta2O5 by arc melting on a water-cooled copper plate in the nominal composition of Ba(Ti1-1.25yTay)2O5 (y=0 to 0.050). At y< 0.050, the main phase of the obtained specimens was BT2T which crystallized in a monoclinic…
Abstract. We investigate the relation between changes in dynamic and thermodynamic anomalies arising from the presence of the liquid-liquid critical point in (i) Two models of water, TIP5P and ST2, which display a first order liquid-liquid phase transition at low temperatures; (ii) the Jagla model, a spherically symme…
The boron cathodic arc ion source has been developed with a view to several applications, particularly the problem of shallow junction doping in semiconductors. Research has included not only development and operation of the boron cathode, but other cathode materials as well. Applications have included a large deposit…
In the present study manganese oxidizing bacteria \n(MOB) were isolated and identified using molecular \ntechniques (16S rRNA gene sequencing) and the electrochemical behaviour of these isolates on orthodontic \nwires was studied by employing polarization and impedance \ntechniques. Staphylococcus aure…
<JATS1:p>Stretch fabrics are more popular than ever, from Juicy Couture's sweats to the trendy, ready-to-wear styles found at H&M. Stretch fabrics have long been a staple of designer fashion as well–from Missoni's colorful knits to Donna Karan's basics. Designing and Patternmaking for Stretch Fabrics provides the…
This study was conducted to investigate the effect of DLC (diamond-like carbon) coating and a hybrid surface modification composed of plasma carburizing and DLC coating on the fatigue properties of Ti-6Al-4V alloy. In the hybrid surface modification, plasma carburizing at the first stage was conducted to generate a ha…
Thermoelectric materials can be employed to develop thermoelectric power generation modules used to convert heat flow into electricity without any moving parts. Increasing the efficiency of these devices is of high interest for application in waste heat recovery and power generation. The focus of this book is in the f…
微弧氧化(毛) 的性质上的稀土元素的效果镁合金上的涂层借助于扫描电子显微镜学(SEM ) 被调查，精力散 X 光检查光谱学(版本) ，和电气化学方法。当镁合金在硝酸盐答案被当作毛的预告的处理时，结果证明好、紧缩的毛涂层成功地被获得。然而，毛成功地没与稀土元素的增加为硅酸盐电解质被完成。在被稀土元素硝酸盐对待的镁合金以后，获得的毛涂层有象厚度，改进腐蚀抵抗，和好制服的表面的一致分发那样的优点，作为与未经治疗的镁合金相比。另外，毛过程的 non-ESP，电压和电流密度的时间显然减少。在镁合金的表面上做的二氧化铈能显著地改进毛涂层和减少的腐蚀电阻毛过程的电流密度作为与氧化镧相比，而做的稀土元素没在毛涂层的部件上有重要效果。
The synthesis of novel aromatic diamine compounds containing phosphorylcholine (PC) group was carried out, which gave the high molecular weight polyamides with PC group by polycondensation. The obtained polymers exhibited the excellent biocompatibility, which would be due to the surface structure derived from PC side…
This paper summarizes the results achieved on the research of leakage current characteristics of external insulation in Tsinghua University for more than 20 years. The relationship between leakage current at pre-flashover stage and the flashover voltage is developed. When the insulator surfaces are saturated with mois…
To investigate the crack resistance of cement stabilized macadam,the experiments of dry shrinkage,thermal shrinkage,flexural strength and flexural elastic modulus of polypropylene fiber reinforced cement stabilized macadam and common cement stabilized macadam were conducted.Adopting dry shrinkage energy anti-cracking…
Four clay minerals of the middle and late Meesozoic mudrock samples from North and Northeast China were analyzed by TEM and Illite Crystallinity (IC) in the study. The paper also explained the reliability of experimental data when employed to analyze paleoclimate. Spatial and temporal change of contents of clay minera…
Anhydrous lanthanide chlorides LnCl3 (Ln = La,Ce,Pr,Nd and Sm) were prepared from La2O3,CeO2,Pr6O11,Nd2O3 and Sm2O3 chlorinated by NH4Cl,respectively.The thermal decomposing process of pure NH4Cl was investigated by TG,and the thermal effect of chlorination of rare earth oxides by NH4Cl were investigated by TG and DSC…
Multiblock copolymers from polyethylene glycol (PEG), e-caprolactone (CL), and p-dioxanone (PDO) were synthesized and characterized. Triblock copolymers were first synthesized from PEG with number-averaged molecular weights (M n ) of 3000, 4000, and 15000 Daltons, and e-caprolactone in the presence of Sn(Oct) 2 . 1 H-…
A novel ferrocene-based epoxy compound was synthesized. It was characterized by 1H-NMR and FT-IR. The influence of different solvents and potential scan rates on the cyclic voltammetry (CV) behavior of the resultant compound was investigated. The relationship between the peak currents and potential scan rates indicate…
Hydrogen storage properties of Ti-Zr-Mn eutectic alloys with the formula Ti 0.475 Zr 0.3 Mn 0.225 were evaluated at ambient temperature and 565 C using a Sieverts-type device. The initial alloys were studied by means of SEM-EDS technique, X-ray diffraction and DTA. The phase compositions and the crystal structures of…
Sodium bicarbonate plays an important role, after admixing in Magnesium Oxysulphate Cement (Sorel’s Cement), on strength and durability of the product. It’s incorporation in the matrix as additive in powerded form as well as saturated solution is studied in detail. Powdered form of NaHCO3 increases the compressive str…
We studied interface effects of thin film V2O5 electrodes on top of indium tin oxide (ITO) glass for Li intercalation by means of a combination of methods: depth-profiling by secondary ion mass spectroscopy (SIMS), electrochemical insertion-extraction of lithium ions by slow-scan cyclic voltammetry (SSCV) and by poten…
Compression tests were conducted at the temperature of 573 K with the true strain rates of 10−3–1 s−1 on as-cast and homogenized Mg-6Al-2Ca-2RE (RE = rare earth) (in mass%) alloy specimens, and their dynamic recrystallization (DRX) behaviors were investigated. Strain hardening occurred after yielding, followed by stra…
The bifunctional phosphine–phosphonate ester derivatives Ph2P(CH2)3P(O)(OSiMe3)2 (L), (cis-Cl2Pt[Ph2P(CH2)3P(O)(OSiMe3)2]2 (1), trans-Cl2Pd[Ph2P(C6H4)P(O)(OSiMe3)2]2 (2) and trans-Cl2Pd[Ph2P(C6H4)P(O)(OEt)2]2 (3) were used to immobilize platinum(II) and palladium(II) complexes on metal oxide supports by three differen…