Materials Literature
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The effect of soaking conditions of ingots on the rate of recovery and recrystallization in a 1050 hot-rolled sheet during annealing at 350°C was investigated. The rate of recovery and recrystallization in no soaking and 600°C/8 h WQ (water quenching) was slower than that of 450°C/8 h FC (furnace cooling). Many solute…
Feedstock material behaviour in thermal spraying process under different parameters is essential in producing repeatable and controllable coatings. Article reviews three regimes of spraying, with a focus on the wear behaviour under the different conditions. RocDur 37 was selected as feedstock material. Regimes applyin…
Additive Manufacturing technologies such as Electron Beam Melting are empowering individuals to develop novelty materials by introducing hierarchical levels into solids. Features from the introduced architectures and the manufacturing technology grant these metamaterials with mechanical performances not commonly seen…
It has been found out that the metals and alloys produced by rapid cooling techniques have better structural and mechanical properties. The cooling rate is a critical factor affecting the resulting structure of a liquid-solid transition. The solidification of Al-33 wt% Cu is studied with the constant-volume and consta…
Intervention into current building industry is the main strategy of European Commissions in order to achieve one of the targeted aims for sustainable development ndash to reduce the emission of greenhouse gases by 20% until 2020 and by 80% until 2050. Increasing requirements for building energy performance, which cove…
Abstrak Penggunaan serat alam sebagai penguat material komposit polimer memberikan beberapa keuntungan karena serat alam memiliki massa jenis yang rendah, mampu terbiodegradasi, mudah di daur ulang, murah, memiliki sifat mekanik yang baik dan dapat diperbaharui. Gewang merupakan tumbuhan yang populer di daerah Nusa Te…
So far two kinds of solutions to the problem of opening-up vesicles with one hole have been found. One is cup-like shape found by Umeda and Suezaki (2005 Phys. Rev. E 71 011913), the other is dumbbell shape with one hole, found by our group. As seen in the context of the bilayer coupling (BC) model, the former corresp…
International audience
DMFC 阳极催化剂 Fe 3 O 4 @Pt 的制备及其催化性能 李 敏, 洛 园, 许伟佳, 刘家祥 (北京化工大学 材料电化学过程与技术北京市重点实验室, 化工资源有效利用国家重点实验室, 北京 100029) 摘 要: 采用水热法制得粒径为 150~300 nm、分散性良好的 Fe 3 O 4 磁性内核颗粒, 经 APTES 对 Fe 3 O 4 进行氨基化修 饰后, 用
Ni-Fe-Ti ternary alloys, as a type of structural and magnetic material, have received more attention in the industrial fields in recent decades. For the purpose of providing necessary experimental data and theoretical basis for industrial appliance of these alloys, the researches of rapid solidification mechanism and…
Two cracking clay soils of Rajmahal Trap viz., Jetkumarjari and Jirul Series were studied for their morphological, physical, chemical and mineralogical characteristics. The soils are very deep, somewhat poor to moderately well drained, silty clay in texture with cracking characteristics indicated by occurrence of pres…
Dirac Fermion, as one of the basic particles in the particle physics, nowadays have been widely used to describe the electronic states with the behavior of Dirac fermion in the topological electronics. These exotic electronic states are called Dirac point, which exhibited as a linear crossing point in the band structu…
When a shock wave reflects from the free surface of a solid sample, fragments may be emitted from the surface. Understanding the process of the fragments mixing with gas is an important subject for current researches in inertial confinement fusion and high pressure science. Particularly, obtaining the fragments size a…
It has been observed that many glass-forming liquids are transformed from fragile to strong liquids in a supercooled region upon cooling. This is the so-called fragile-to-strong (F-S) transition. Since its discovery in water, the F-S transition, as a frontier problem, as well as a hot issue, in condensed matter physic…
The sensitivity and uncertainty analysis(S/U) method based on the first order perturbation theory is commonly employed to calculate the uncertainties in-nuclear reactor's integral parameters, such as the neutron effective multiplication factor(keff), due to uncertainties in nuclear data. However, this method is only t…
As one of the most appealing materials, graphene possesses remarkable electric, thermal, photoelectric and mechanic characteristics, which make it extremely valuable both for fundamental researches and practical applications. Nowadays the synthesis of graphene is commonly achieved by growing on metal substrate via che…
Gallium nitride (GaN) and its family of materials (including GaN, InN, AlN and their alloys) are known as the third generation of semiconductor, which has important applications in optoelectronics and microelectronics. In the structure of GaN-based high electron mobility transistor (HEMT) device, there is a relatively…
The surface polarization energy that arises from the difference in dielectric coefficient between the quantum dot (QD) and the background medium is investigated by the equivalent image charge method. A general expression for the bandgap of QD depending on the dielectric coefficient of background medium is presented by…
Fabricating functional submicrometer particles is difficult by conventional particle fabrication techniques that use top-down or bottom-up approaches. Pulsed-laser melting in liquid is a versatile technique for crystalline submicrometer spherical particles of various materials. Space-selective pulsed heating of partic…
Metallic thin films deposited on non-conductive substrates are widely used in areas like microwave absorbers, photovoltaic, packaging, electromagnetic shielding, and integrated circuits. From scientific and engineering point of view, measuring sheet resistance of metallic thin films is important. In this study, we dev…