Materials Literature
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Polycarbonate(PC) has lightweight, ductility, low cost, high productivity and high heat resistance, which are utilized for biomedical and electrical articles, as well as wear, automobile and architecture. However, PC usually occur Hydrolysis at High temperature and high humidity environment. Thus it is a serious probl…
采用动态硫化法制备乙烯-醋酸乙烯酯共聚物（EVA）/氯化聚乙烯（CPE）/丁腈橡胶（NBR）共混型热塑性硫化胶（TPV）,研究TPV的应力-应变行为、微观相结构、Payne和Mullins效应.结果表明：甲基丙烯酸锌（ZDMA）补强TPV的储能模量随应变的增大而显著下降,表现出典型的Payne效应;TPV存在明显的Mullins效应,相同拉伸比下,与EVA/CPE/NBR TPV相比,ZDMA补强TPV的最大应力、瞬时残余应变、内耗、损耗因子和软化因子均有所提高.
Temperature and frequency dependence of Young's modulus and internal friction of La_<0.6>Sr_<0.4>Co_<0.2>Fe_<0.8>O_<3-δ> were evaluated by dynamic mechanical analysis. A relaxation peak in the internal friction which follows a significant decrease in the Young's modulus was observed. It was suggested that the peak was…
Discussed the parameters of the process of hardening fraction: the treated surface coverage prints speed fractions and diameter for maximum effect by fatigue strength. Full use of the strength and ductility of the steel processed shot, achieved at the maximum uniform strain on the workpiece surface. Rational work-hard…
In this study, simultaneous and direct observation of visible and infrared images of frictional surface was conducted to understand the scuffing phenomenon. A contact area was produced between a rotating sapphire disc and a stationary steel ball. Visible and near infrared images, load, and friction were synchronously…
Material Removal Rate of sapphire CMP using silica slurry with the fullerenol increase as the higher concentration of the fullerenol in the slurry. The surface roughness of the sapphire substrate gives the influence against the MRR of sapphire CMP. Raman spectra indicate that molecule structure did not change during C…
Considering space utilization of the nanocrystalline metals, the influence of the nano-scale void is investigated via molecular dynamics (MD) method. As to nanocrystalline metals, grain boundary deformation is one of the important factors to explain the material characteristics. Considering the grain boundary deformat…
Carbon Nitride (CNx) coating shows ultra low friction coefficient (μ<0.01) in dry Nitrogen gas. Transformed layer is important to show low friction, but it is not clear what the ultra low friction mechanism is. To clarify low friction mechanism, hardness of transformed layer is important to measure friction coefficien…
Debye formulas for the relaxational polarization and hopping conductivity is proposed. The essence of the model is based on the acceptance of Debye formulas for permittivity and conductivity and dependence of relaxation rate on electric field frequency. On the basis of the model as an example, the analysis of electrop…
Fatigue crack propagation experiments on approximately 100-nm- and 500-nm-thick freestanding copper (Cu) films were conducted to clarify the thickness dependence on fatigue crack propagation. Fatigue crack propagation rate da/dN of the 100-nm-thick films against stress intensity factor range ΔK was larger than that of…
The mechanical conditions of fatigue crack initiation were evaluated on roughly 500 nm thick freestanding copper films. Fatigue experiments and fatigue damage observations by using field emission scanning electron microscope (FESEM) and electron backscatter diffraction (EBSD) analysis revealed that an intrusion/extrus…
Plastic film has recently received attention due to make the flexible lithium-ion secondary battery. Plastic film is produced by Roll to Roll system. In this system, winding process is the final section of the producing line. Wound roll can be stored in a small space. However, plastic film have thickness variation for…
I discuss first the concept of "UV plasmonics", which is an emerging field of the plasmonics. Then, I will demonstrate localized surface plasmon resonances in deep-UV using aluminum (Al) nanostructures. Finally, I will demonstrate the tip-enhanced resonance Raman scattering using Al probe. These results demonstrated h…
This study evaluates nuclear characteristics of molten salt, namely LiF-NaF-BeF_2 (FLiNaBe), from the viewpoint of its application to a liquid blanket system in a fusion reactor. Monte Carlo numerical simulations using MVP-2.0 with JENDL-4.0 data library and time-dependent nuclear transmutation analysis are carried ou…
This work is based on the analysis of polymeric and composite pipe’s application on Russian systems of collecting and transportation of oil and gas. The activities of a number of enterprises are reviewed, which provided further successful implementation of these pipes in order to improve the reliability and efficiency…
I suggest assessment method of the mean stress in the fatigue strength design of the short fibers CFRP from the fatigue test result in various stress ratios with completely reversed fatigue data in the standard specimen, creep rupture test data and product structure in this report.
Diamond-like carbon (DLC) films are widely known as protection films and solid lubrication films. DLC films are promising candidates for tribomaterials in a water hydraulic system. The friction properties were investigated by using a ball-on-disk type reciprocating tribometer. The low-friction mechanism of DLC films i…
We investigated etching characteristics of Si {100} and {110} in high temperature and low concentration TMAH solution. In 1wt%TMAH solution at the boiling point, it is found that the etching rate is practical. In addition, in 1wt%TMAH solution containing 25g/L TMACl at the boiling point, the etching rate increased.
In this study, we have extracted the phonon mean free path of low thermal conductivity materials by time-domain thermoreflectance measurements with gold nanoislands. Firstly, 7 and 9 nm thick gold films were deposited on the material substrate by vacuum evaporation method, and then annealed at 500 ℃ and 900 ℃ to form…
The structure of a polymeric material has a great influence in many fundamental scientific areas as well as in more applied science, since it affects the diffusion, permeability, mechanical strength, elasticity, and colloidal properties of the materials. The results in this thesis demonstrate that it is possible to fa…