Materials Literature
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Purpose: This paper presents the results of studies on the effect of silicon content in alphinising bath on the thickness of diffusion layer „g1” and of coating „g” produced by immersion on the grey cast iron, grade EN-GJL-250. The temperature of alphinising bath was 750±5°C, and the time of holding the cast iron inse…
The effect of interfibrillar swelling on swelling degree, carboxyl content, split number, weight loss and dyeing properties by using NaOH solution up to 2.5 M concentration of lyocell fibres was investigated. The Split number and weight loss show the behaviour of fibres during alkali treatment, whereas the water reten…
The authors investigated the mechanical properties of Ni-58mass%Fe alloy electrodeposits, which are expected to be used as low thermal expansion materials, before and after heat treatment for one hour at 400 to 600°C.For the Ni-58mass%Fe alloy electrodeposits without heat treatment, ultimate tensile strength (UTS) was…
当演员组和 Cr 的使变形的state.Solute富有的簇，应当在老化处理期间形成，被观察在，Cu-(0.4%-2.0%)Cr-(0.05%-0.16%) Zr 合金的阶段在两个被分析是扔了状态；与形态学特性一起， Cr 阶段在的相应优先的取向当演员组状态也被调查。猛抛被观察与一个双性人一起在矩阵散布形式的分发， viz.coarse 与比几百纳米大的尺寸猛抛，罚款与 intermetallics， Cu5iZri4 的普通混合物，相应地很少发生的 Cu5Zr 和稀罕 Cu_8Zr3 的 2-10 nm.Three 类型的尺寸猛抛，在不同样品被描绘。
The EPMA (Electron Probe Microanalyzer) with WDS (Wavelength Dispersive X-ray Spectrometer) is a typical instrument for surface analysis. This powerful instrument features high energy (wavelength) resolution and high capability for detecting trace elements and for analyzing light elements, compared to SEM-EDS (Scannin…
Particles between metal lines were detected on etched wafers in a process tool with an Al2O3 window on top of the chamber. The particle was speculated to be derived from fluorinated Al2O3 surface in the chamber. In this paper, an attempt was described to reduce that kind of particles by using Y2O3 material within the…
Cold-rolled non-oriented silicon steel sheets were annealed conventionally and magnetically at 0.1,6 and 12 T,where the magnetic field was applied to them in the rolling direction.The results showed that the magnetic annealing process affects obviously the orientation density of recrystallization texture and grain siz…
A physical model composed by mesoscopic physical elements system is attempted to be established.By tracking its movement process,the complete damage and failure process of heterogeneous materials under quasi-statically uniaxial tension can be simulated.Based on the macroscopic response of quasi-brittle materialst,he i…
The insulation breakdown fault and brittle fracture of composite insulators can be avoided efficiently by on-line inspecting defects. The insulation breakdown fault of composite insulators in service was introduced,and probable reasons of insulator heating were analyzed.Through taking the thermograph of two kinds of d…
Over the past 50 years, molecular simulation has emerged as a useful tool for providing microscopic insight into a variety of chemical systems and processes. There are two main particle-based simulation techniques – molecular dynamics, which uses deterministic equations of motion integrated over sma...
In order to examine the feasibility of using wood as a plastic substitute, we studied the possibility of producing cups from wood by extrusion. It is common to use powdered wood in the same kind of studies. Whereas in this study, we didn't powdered raw materials and used wood in bulk state. The formability depended st…
Powders of hemihydrate gypsum are set and hardened at room temperature by mixing with a phosphoric acid solution to be formed into the dihydrate gypsum membrane. These gypsum-derived membranes exhibit superprotonic conductivities of approximately in the entire temperature range from to . A /air configuration cell usin…
In galvanizing process several byproducts are formed. Among them solid materials composed by different compounds are grown in the galvanizing kettle. The present work examines the structure of the bottom dross and the blowing waste using X-ray and electron microscopical techniques. From this research it was deduced th…
The electrostatic force from the electric field and the Coulomb force between charges are key forces to overcome the surface tension and viscoelastic force. In this paper, we report the results of a systematic investigation of the effect of variation of the solution rate on the electrospinning of Poly (ethylene oxide)…
Abstract: Cycloaliphatic epoxy resins have been used alongside silicones and ceramics for more than 30 years as insulation materials for outdoor applications. Insulators made of cycloaliphatic epoxies offer many advantages over those made of ceramic or silicones. Standard cycloaliphatic epoxies are construction materi…
Catalysts for the utilization of methane from the coal mine ventilation air The paper indicates coal mines as the source of permanent emission of low-concentrated gases, which have increased the greenhouse effect. This paper proposes the catalytic oxidation of methane as the solution to the problem of methane utilizat…
For fusion material research, minichannel gas flows are designated to cool irradiated material specimens. Since the facility design requires accurate predition methods for the temperatures in the structure and the specimens, relevant experiments were conducted. This paper reports on the experimental procedures, which…
In 1951, Birks and Black showed experimentally that the fluorescence efficiency of anthracene bombarded by alphas varies with total fluence (N) as (I/I0) = 1/(1 + AN), where I is the fluorescence yield, I0is the initial light yield, and A is a constant. Schulman observed a similar effect to the Birks and Black equatio…
Dynamic developments in the engineering and technology fields give reasons to increase the requirements posed to various engineering materials. Hard magnetic materials based on rare earth and transition metal compounds, in particular on the Nd2Fe14B phase, are materials with big application possibilities. Good magneti…
SiO2/CeO2 mixed oxide (designated as SC) with variable ceria contents, SC1 = 5.6, SC2 = 8.0 and SC3 = 13.0 wt%, prepared by the sol-gel processing method, were obtained as amorphous solids possessing specific surface areas of SC1 = 463, SC2 = 474 and SC3 = 460 m²g-1. Phosphate ions were immobilized onto the surface of…