Materials Literature
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In this work we optimized conditions for aerosol deposition of homogeneous, nanograined, smooth Ba0.8Sr0.2TiO3 thin films. Investigation involved optimization of deposition parameters, namely deposition time and temperature for different substrates. Solutions were prepared from titanium isopropoxide, strontium acetate…
A practical approach, adopting a clever litho trim, to spacer double patterning is investigated in detail. In order to produce quarter-pitch small lines of dense arrays (with pitch fragmentation techniques), state-of-the-art ArF photoresists can be used with a subsequent trim etch, to get the tiny line widths on desir…
In this paper, a modified solution–diffusion model is proposed to account for the mass transport of penetrants in the polymer membrane. In the model, the group contribution method (the UNIFAC-ZM model) is introduced to calculate the activity of penetrants in the polymer membrane, and a new temperature-dependence diffu…
It is known that austenite grain coarsening during carburizing is likely to occur in cold-forged steel parts. We estimate that carbide morphology of spheroidizing annealed microstructure prior to cold forging have an influence on the austenite grain coarsening behavior strongly through the ferrite recrystallization du…
The electrodeposition of Sb-Bi-Te alloy in AlCl3-NaCl-KCl molten salt containing SbCl3, BiCl3, and TeCl4 at 423 K was carried out under constant potential control and potential pulse control in the melt. The electrodeposition results show that the SbCl3 concentration is effective to control the composition of Bi-Sb-Te…
We report a temperature and frequency dependent electron spin resonance (ESR) study of the kagomé spin-1/2 compound ZnCu 3 (OH) 6 Cl 2 . Our results demonstrate that two spin species are simultaneously detected; copper spins on the intra-plane Cu 2+ kagomé sites and those on the inter-plane Zn 2+ sites, the latter res…
Transparent Nd:YAG/YAG composite ceramics are synthesized by solid-state reaction method using highpurity Y2O3, Al2O3, and Nd2O3 powders as raw materials. The mixed powder compacts are sintered at 1780 C for 10 h under vacuum and annealed at 1450 C for 20 h in air. The Nd:YAG/YAG ceramics exhibit a pore free structure…
In this work, a focused ion beam (FIB) milling process has been developed to fabricate 50 nm Bi nanowire and transistor structures using FEI‐200 dual beam FIB system. For the fabrication, 50 nm bismuth film was thermally evaporated through EBL patterned PMMA windows onto SiO2 substrates with pre‐defined contact pads.…
Kurzfassung In der einschlägigen Literatur findet man Arbeiten, welche die Bestimmung der Austenitkorngröße nach der Methode des thermischen Ätzens beschreiben. Diese Methode wurde weiterentwickelt. Zum thermischen Ätzen wurde die Heizvorrichtung eines Bähr 805 A/D Abschreck- und Umformdilatometers mit Vakuumkammer ve…
This paper presents a study on effects of the pre-treatment and the heating time on the hardened layer and the bending fatigue strength of induction hardened gears. The measurement of hardened layer and the bending fatigue test of induction hardened gears made of thermally refined and as-rolled S35C and S45C steels we…
Human adipo-stromal cells were incubated in culture medium containing basic fibroblast growth factor (bFGF) or in a cell-culture dish coated with bFGF. The effect of the two existence modes of bFGF on cell attachment and differentiation was evaluated. The morphology and number of cells were similar for both the bFGF m…
To develop a fine grain structure on the surface of a magnesium alloy, a multi-axial alternative forged AZ31B magnesium alloy was subjected to hydrogenation treatment using the resultant hydrogen compounds as the trapping source for dislocations, which were induced following the application of the shot peening techniq…
Ceramic samples of solid solutions (1 − x ) PbNb 2/3 Mg 1/3 O 3 · x PbTiO 3 (0 ≤ x ≤ 1.0, Δ x = 0.0025–0.05) are prepared by the columbite method. A detailed x − T phase diagram of the system is constructed (isothermal join at 25°C), and dielectric, piezoelectric, and elastic properties are investigated. It is establi…
As the top coating, zirconia with 4 mol% yittria was electron beam-physical vapor deposited (EB-PVD) on the bond coating of CoNiCrAlY. The substrates were rotated during EB-PVD process and the rotation speeds were 5 (R5) and 10 rpm (R10). The thickness of the top coating was 0.12 mm. In order to investigate the change…
Transplanting is routinely performed in crop cultivation. One transplantation method involves the use of seedling pots made of paper (paper pots). Seedlings are raised in the paper pots and are subsequently transplanted. As transplanting is performed by hand or mechanical transplanters, the paper used for the seedling…
Realistic and accurate modeling of the strains developed in concrete coated pipelines is an important objective to offshore pipeline industry. This is because of the acceptance of the strain-based design methods and also the increasing demand on pipelines to operate under harsher environments/loading conditions. The p…
ポリメタクリル酸メチル(PMMA)，ポリスチレン(PS)などの非晶性光学ポリマーは，ガラス状態では熱力学的に非平衡な状態であり，Tg 付近の温度では体積やエンタルピーなどの熱力学量が緩和し，化学的な変化を伴わない物理的エイジングが起こる．エイジングがポリマーの光学特性に及ぼす影響について研究することは，ポリマーを光学材料へ応用する場合の，光学特性の安定性・信頼性を吟味する上で重要である．筆者らは，エイジングによるわずかな体積変化を，プリズムカップリング法を用いた屈折率測定により評価している．ここでは，PS ガラスのエイジングに伴う屈折率変化について報告する．
Ce0.8Gd0.2O1.9 (Gd-doped ceria, GDC) powder synthesized by glycine-nitrate combustion process was densified to 96 % of theoretical density at 900 ℃ for 5 min using spark plasma sintering (SPS) process. The grain size of the GDC sintered using the SPS process was about 20 nm. The electrical conductivity of GDC sintered…
Neutron radiation embrittlement of reactor pressure vessel (RPV) steels is one of critical issues for the structural integrity assessment of the RPVs. Especially, the embrittlement at high fluences is of great interest for the long term operation of light water reactors because information on the mechanical property c…
Different pretreatment procedures were investigated, and alkaline cleaning and acid picking pretreatment techniques were developed, for the first time, to achieve a phosphating conversion coating on a sintered NdFeB magnet. The effects of different additives on the pretreatment procedures are illustrated by several vi…