Materials Literature
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Aim at the problem of signal aliasing which causes the difficulties on target recognition during the process of projectiles penetrating multi-layer hard targets,a method of mechanical filtering was proposed.The basic idea is that two filtering pads are fixed to the both ends of the piezoelectric accelerometer.The stif…
In order to detect and diagnose the dielectric property at damped AC (DAC) voltages in field experiments and condition maintenance in its application for 110 kV XLPE power cable systems in China,and to accumulate measurement experience,the principal of DAC voltage generation,DAC voltage properties and on-site detectio…
Slag and fly ash were used as raw materials to produce basalt fiber reinforced geopolymeric concrete (BFRGC).Impact compressive tests on BFRGC of various fiber volume fractions were carried out using a 100mm-diameter split Hopkinson pressure bar (SHPB).For the valid SHPB tests on BFRGC specimens,the improved pulse sha…
A 6R robot–based automatic high velocity arc spraying system was developed in this study. The remanufacturing process of engine crankshaft was designed based on the newly developed automatic spraying system and the FeAlNbB cored wire. The microstructure and properties of the coating prepared were investigated in lab.…
Neste trabalho, estudou-se as propriedades magneticas e biocompativeis de nanoesferas transportadoras de particulas magneticas de Y3 Fe5-xAlxO12 (YFeAl) baseadas no polimero diglicidil eter do bisfenol-A (DGEBA). Particulas magneticas de YFeAl monodispersas e com tamanho igual a 15 nm foram preparadas atraves da decom…
For a 220 kV transmission line at highway area and highway-farmland area in South China,the contaminations on the hanging type insulators are sampled periodically to understand contamination degrees and compositions at different topographies,and analyze the effects of different contamination compositions on ESDD and N…
A novel type of 1 500 MPa grade Si-Mn-Cr-Ni-Mo multi-component ultrahigh-strength low-alloy structural steel was designed.The effects of tempering temperature on the microstructure and mechanical properties of the directly-quenched steel were investigated.The results showed that with increasing tempering temperature t…
The principle of induction heat treatment for U75V rail was analyzed, the TTT and CCT curve of U75V rail were discussed. Some typical abnormal microstructure and their generation mechanism were analyzed. Finally, the colling speed range of induction heat treatment was presented.
This paper summerized worldwide latest progresses in Z-pinch research and discussed the fact that Z-pinch fusion nuclear energy is a new energy technology and proved Z-pinch fusion nuclear energy is an energy road with great competitive power.
This project is conducting fundamental aspects of anion exchange membrane fuel cell (AMFCs) for practical use in intermediate (10-50 kW) power applications. Insights gained from these studies will be applied toward the next stage of development of AMFC systems. Since there were no technical targets for AMFCs in the cu…
Fracture toughness K_(IC) of TC4ELI alloys with different microstructures was tested,and the essential definition of K_(IC) was introduced to explain the influence of microstructure on K_(IC).The results show that lamellar microstructure has high K_(IC) value,and the K_(IC) value increases with the decreasing of yield…
Solid lubrication materials have been widely used in the equipments serving in severe space environment for their excellent performances such as low evaporation rate,resistance to high and low temperature,radioresistance,corrosion resistance,etc.Tribological performance,preparing routes and applications of the five so…
Current collecting property in micro tubular solid oxide fuel cell (SOFC) was evaluated by using electrochemical impedance spectroscopy. A micro tubular cell was composed of NiO/(ZrO2)0.9(Y2O3)0.1 anode-substrate, (Ce0.6La0.4)O1.8 and La0.8Sr0.2Ga0.8Mg0.2O2.8 double layer electrolyte, and La0.6Sr0.4Co0.2Fe0.8O3 cathod…
The encapsulation and immobilization of biomolecules on solid materials, mesoporous SBA-15, have been studied. Highly ordered hexagonal mesoporous silicates (MPS) with different mean pore sizes have been synthesized using two kinds of triblock copolymers (P123 or L123) as a template. The mixture of tetraethyl orthosil…
Although the plastic strain induced in materials increases the mechanical strength, it may reduce the fracture toughness. The change in the fracture toughness is brought about by four factors; reduction in critical plastic strain due to pre-strain, localization of deformation, increase of material strength by work har…
The Tulip 3D survey is a single‐vessel full‐azimuth Coil Shooting project in Indonesia. The circular geometry is very different to the conventional race‐track towed streamer approach. While it results in many acquisition and imaging benefits, it also introduces a number of new challenges in the survey design, modeling…
Composite films composed of graphite particles and polymer resin should exhibit functional properties such as electrical conductivity and elasticity. This study aims to produce fine flaky graphite particles for use as electrical conductive source materials within graphite / phenol resin composite films. We prepared gr…
筆者らによって試みられた種々の電気化学的手法による腐食現象や腐食機構の解明，腐食速度のモニタリングなどについて紹介した．特に，電気化学インピーダンス法とそれに基づく腐食速度のモニタリング法の考え方，大気腐食のシミュレーションと計測に関する電気化学的方法の適用，チャンネルフロー電極法によるアノード溶解機構の解析法の考え方について解説した．また，亜鉛系めっき鋼板の腐食生成物から溶出したZnイオンが下地鉄の腐食を抑制することを紹介した．鋼板の新しい表面処理として筆者らが提案したAl-Mg-Si合金の溶融めっきは，犠牲防食作用時の電位が亜鉛系めっきの－1.0 Vより高いことから，高張力鋼の水素脆化の懸念が小さくなる．
Phthalates are used as plasticizers and flame retardants in building materials and phthalates emitted in indoor environment tend to adhere to house dust. According to Wensing, infants take dust 10times as adults, so an investigation on the concentration of phthalates in house dust is important. This study examined the…
A single phase of Ba3Ta6Si4O26 consisting of one-dimensional TaO6 chains has been synthesized by an amorphous metal complex (AMC) method employing water soluble materials, tantalum peroxolactate and silicon tetrapropyleneglycoxide. In contrast, a polymerizable complex method of another solution process gave a mixed ph…