Materials Literature
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At present inline measurements of antireflection coating (ARC) thickness are established, but there are still open questions concerning the influence of a varying surface texture quality on accuracy of ARC thickness measurement. Surface texture may be different due to process inhomogeneities. Thus, inline color inspec…
We investigated the effect of polyelectrolyte types in Layer-by-Layer multilayering and furnish combination on physical properties of paper. Handsheets were made from pulp fibers with different polyelectrolytes composition, and their density, formation, tensile strength, strain, tear strength and burst strength were e…
Prior research from this laboratory reported on the use of gelatin, alone or in combination with dairy byproducts (casein or whey), as a filler for leather. It was found that all these treatments had fully penetrated the blue stock, were not removed during washing, and had no significant effect on mechanical propertie…
Codeposition of fuel species with the various plasma-facing materials present in ITER is expected to be the primary source of tritium accumulation within the vacuum vessel. In this paper, the levels of retention in codeposited layers of each of the three ITER materials (C, Be and W) are compared. Scaling laws, based o…
Light bends the wrong way in materials where both ε and µ are negative as was pointed out in 1968, but the absence of natural materials with this property led to neglect of the subject until 1999 when it was shown how to make artificial materials, metamaterials, with negative µ. The rapid advance of the subject since…
The application of hafnium hydride (Hf-hydride) to a control rod for a large fast reactor where the B4C control rod is originally employed is studied. Three types of Hf-hydride control rods are designed. The control rod worth and its change during the burnup are evaluated for different hydrogen-to-hafnium ratios and a…
International audience
This paper briefly reviews work by the author identifying and describing in-reactor deformation mechanisms of materials and structures used in nuclear reactors, in particular, Zircaloy-2, Zircaloy-4, and Zr-2.5Nb, and the CANDU fuel channel (comprising Zr alloy pressure tubes, calandria tubes, and spacers). The discus…
Nowadays, an increase on demands of aerospace components has led to implementation of high speed machining (HSM). The principal factors in the performance of aerospace materials are strength-to-weight ratio, fatigue life, fracture toughness, survivability and of course, reliability. However, when HSM is coupled with d…
In pressurized water reactors, new operating conditions (higher burnup, new chemistry, etc.) can have an effect on the dimensional stability of the fuel assembly skeleton. Previous studies have shown that the fuel assembly growth is, among others parameters (free growth, creep), strongly driven by corrosion. Oxide lay…
Worldwide, crystal plasticity models are currently developed to predict texture development during processing of material. Such models require a precise knowledge of the active deformation mechanisms. The activation energy for certain deformation modes will change with temperature and also depend on the chemistry of t…
Effect of Zr addition on microstructure, magnetic properties and thermal stability of Nd12.3Fe81.7B6.0 (x=0-3.0) ribbons melt-spun and annealed was investigated. Magnetic measurement using vibrating sample magnetometer (VSM) revealed that Zr addition was significantly effective in improving the magnetic properties at…
Cu-30Ni-xRE (x = 0 0.213 ) 合金被金属准备模子扔方法。微观结构和合金的机械性质上的 RE 的效果用光显微镜被调查，扫描有精力散的分光计， X 光检查衍射，和机械测试的电子显微镜。结果证明 RE 在精制树突结构和谷物尺寸上，以及在净化融化 Cu-30Ni 合金上有明显的效果。随 RE 内容的增加，最终的张力的力量，收益力量，和延伸起初增加然后在增加 RE 以后减少超过 0.095 wt.% 。Cu-30Ni-0.095RE 合金拥有更好的机械性质，即，最终的张力的力量，收益力量，和延伸是 308 MPa， 125 MPa，并且 51.2% 分别地。微观结构和机械性质与增加 RE 内容被变得更坏超过 0.09…
Triglycine acetate (TGAc), a nonlinear optical material, has been synthesized. The second harmonic generation efficiency has been determined by Kurtz’s powder test and it was found to be 1.55 times more than potassium dihydrogen phosphate. The solubility studies were carried out in the temperature range 30–55 °C. Sing…
We have performed a systematic variation of the wet chemical oxidation and the subsequent oxide etching steps during the cleaning of Czochralski (CZ) single crystalline silicon wafers prior to surface passivation. The optimization of these preconditioning steps was carried out on saw-damage etched or textured Si wafer…
研究了2007年太湖五里湖浮游植物的生态学特征.结果表明:五里湖共检出浮游植物8门123种;其中绿藻种类最多,共57种,占浮游植物总种数的46.3%;硅藻次之,共23种,占浮游植物总种数的18.7%;浮游植物种数以冬春季多、夏秋季少.调查期间,浮游植物数量和生物量分别变化在386.2×104-5581.9×104cells/L和0.541-3.491mg/L,均以绿藻最高;浮游植物数量的季节变化表现为夏季、春季、秋季、冬季;且除绿藻外,浮游植物的季节演替规律与PEG模型基本一致.相似性分析显示,五里湖1、3、4、5月份的生境相似,6、7、8、9、11月份的生境相似.优势度分析显示,五里湖各个月份的浮游植物优势种都在2种以上,优势种…
Einführung in die physikalischen, biologischen und rechtlichen Grundlagen der Strahlungsphysik und des Strahlenschutzes mit ausführlichem Formel- und Tabellenanhang Der Inhalt Strahlungsarten und Strahlungsfelder - Atombau - Radioaktivität - Wechselwirkung ionisierender Photonenstrahlung - Schwächung von Strahlbündeln…
在交换勉强机器的常规结构被介绍，例如三阶段的 12/8 结构交换勉强机器，三阶段的 6/4 结构交换勉强机器，四阶段的 16/12 结构交换勉强机器，和四阶段的 8/6 结构交换了勉强机器。三相 12/8 结构交换勉强机器是为大力量的最好的选择在煤矿的交换勉强机器系统。主要电路和主要电路也是的双线的弯屈力量变换器介绍了的不对称的桥力量变换器。主要电路是的三相不对称的桥力量变换器为大力量的最好的选择在煤矿交换了勉强机器系统。设计大力量马达的磁性的路径与一阶段刺激和两倍阶段刺激被给。阶段水流波形也被给。
A lab-scale lanthanide precipitation apparatus, which has a 4 kg/batch size, was installed and tested. By using this lab-scale apparatus, cooxidative precipitation experiments of lanthanides were carried out. As lanthanides, 8 rare-earth elements (Y, La, Ce, Pr, Nd, Sm, Eu, and Gd) were used. By a reaction with oxygen…
The LiBaBO3:Eu2+ green phosphor was synthesized by high temperature solid-state method. With the Eu2+ doping of 1mol%, the emission and excitation spectra of LiBaBO3:Eu2+ phosphor were measured. The emission spectrum shows two peaks at 482 and 507nm, which are in good agreement with the theoretical values. The excitat…