Materials Literature
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ボイラー水環境に用いられる炭素鋼管の腐食は思いもよらない環境流動条件によって加速されることがある．流れ加速腐食（FAC）は通常炭素鋼表面に形成される酸化皮膜の溶解や，金属イオン，溶存酸素および環境物質の物質移動によって説明される．しかしながら，腐食機構は実験レベルあるいは現場で，詳細に証明も再現もなされていない．本研究ではバッチ式容器内にpH9.0, 9.2，温度393, 413 K，ギア式回転子を用いた流動環境条件で炭素鋼および低合金鋼の腐食／エロージョンコロージョン試験を行った．腐食機構を明らかにするために全腐食量を酸化皮膜中の鉄量と，溶液中に溶け出した鉄量に分けた．鋼表面および溶液中の塊状浮遊物，浮遊粒子は走査型電子顕微鏡（…
This review summarizes the development of stimuli-responsive materials based on the topology transformable polymers from branched to linear. The junction point of the rotaxane components bearing plural polymer chains is the key for the topology transformation which cannot be attained by the fixed junction point formed…
The present work demonstrates the possibility of production of personalized implants from bioresorbable polymers designed for replacement of bone defects. The stages of creating a personalized implant are described, which include the obtaining of 3D model from a computer tomogram, development of the model with respect…
In this study, an attempt has been made to join MMC (AlSiCp) at interfacial reaction during lap joint. Different specimens of Silicon (Si) particulate reinforced in aluminium matrix were prepared. The various attempts to join MMC have been made using different interfacial joining materials. The obtained strength of la…
Buckling instabilities in soft materials, specifically wrinkling, have led to the formation of unique surface patterns for a wide range of applications that are related to surface topography and its dynamic tuning. This article summarizes the fabrication of various wrinkle structures on a PDMS elastomer using 3D-strec…
Automotive and stationary energy storage are among the most recently-proposed and still unfulfilled applications for lithium ion devices. Higher energy, power and superior safety standards, well beyond the present state of the art, are actually required to extend the Li-ion battery market to these challenging fields,…
© 2017 Dr Lu Cao
The current work studies the effect of organo-montmorillonite addition in epoxy through compressive test. Epoxy/organo-montmorillonite was prepared based on diglycidyl ether of bisphenol A (DGEBA) and isophorondiamine (IPDA) as the curing agent with stoichiometry amine amount. In this study, the incorporation organo-m…
Cílem práce je rozbor antikorozních materiálů se zaměřením na martenzitickou korozivzdornou ocel.Nejprve je v práci popsáno rozdělení a použití korozivzdorných materiálů a slitin.Poté se zaměřuje na cyklické a materiálové zkoušky.V experimentální části bylo provedeno porovnání základních mechanických vlastností marten…
In this study, a fusion-fission hybrid reactor system was designed by using 9Cr2WVTa Ferritic steel structural material and the molten salt-heavy metal mixtures 99–95% Li20Sn80 + 1-5% RG-Pu, 99–95% Li20Sn80 + 1-5% RG-PuF4, and 99–95% Li20Sn80 + 1-5% RG-PuO2, as fluids. The fluids were used in the liquid first wall, bl…
20 W of laser operation at around 2.8 m in an Er-doped fluoride fiber is reported using a simple and proven optical setup. Compared to experiments in the past, the efficiency was significantly increased that allowed doubling the output power. In the tested free run configuration, the wavelength shifts from 2790 nm to…
The actual problem of diagnostics of technical condition of industrial equipment, particularly oil and gas processing, is to assess the degree of degradation of operational properties of material and forecasting of resource based on this process. Currently used methods for destructive testing due to its complexity and…
This paper aims the development of a foundation structure for marine machinery use CNT reinforced with CFRP composite materials that would replace the existing structural material (mild steel). This paper thesaurus to show that the nanocomposite foundation structure provides better vibration control than the tradition…
Dynamic switching of the IPS diffraction grating filled with optically isotropic liquid crystal
Currently nuclear fusion remains a major target for future energy production. However, numerous key issues still remain unresolved for both inertial confinement and magnetic confinement design concepts. Material selection for Plasma Facing Components (PFCs) is a major concern that needs further investigation and innov…
Gas injection systems are extensively employed in the steelmaking industry for mixing molten metal baths and, hence, for removing impurities and nonmetallic inclusions such as C, P, S, and Al2O3. A bath subjected to bottom gas injection is sometimes accompanied by a swirl motion of the deep-water wave type when the as…
化学工学の分野で塗布は重要な要素技術であり，日本の産業界ではVOF 法を用いた塗布ビードの自由表面解析が盛んに行われてきた。この解析手法にて，空気同伴，リビング，リビュレット，段ムラ，塗布エッジ膜厚不均一等の各種塗布故障が解析結果として再現された。また，これら塗布故障の発生状況と塗布条件の相関を定量的に整理したコーティングウィンドウにおいても，実際の塗布試験結果と良好な一致が見られた。このように，塗布解析を活用した塗布故障発生原理の解明，未知の操業条件における塗布故障発生予測が実用化され，近年では主に電子材料分野の塗布最適設計に役立っている。現状この分野では，スロット塗布方式による単層塗布が一般的だが，多層同時塗布技術の応用も期待…
Strontium barium niobate (Sr0.3Ba0.7Nb2O6, SBN) thin films were deposited on silicon substrate by using the radio frequency magnetron sputtering and under different deposition power and time at room temperature. Surface morphology and thicknesses of the SBN thin films were characterized by field emission scanning elec…
En esta comunicación se lleva a cabo un estudio del comportamiento electroquímico del Cd (II) en el NADES [1,2] Cloruro de colina-etilenglicol (ChCl-EG), 1:2 sobre diversos soportes electroquímicos (platino, hierro, acero al carbón 1018, etc) a temperaturas comprendidas entre 333 y 363 K
A study was structured to investigate the effects of two different approaches of black-filled NRL films preparation on tensile strengths and tensile stress at 100% strain (M100). In the “First Approach”, carbon black dispersion was added into the NRL and mixed using mechanical stirrer. Then the black-filled NRL was co…