Materials Literature
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Metode PDKB dalam pemeliharaan SUTET 500 kV memegang peranan yang sangat penting untuk menjaga keandalan dan kontinuitas sistem penyaluran sistem tenaga listrik. Metode PDKB mengalami kendala dalam pemeliharaan isolator link pendek karena peralatan Cold End Yoke keluaran manufactur tidak sesuai konstruksinya untuk kon…
In this project, Si nanocrystals embedded in dielectric matrix have been synthesized with the technique of Si ion implantation and plasma enhanced vapor deposition (PECVD). The resulting structure of the synthesized films embedded with nc-Si have been characterized by the techniques of transmission electron microscopy…
This project aims to study the feasibility of improving the thermoeletric properties of n-type Bi2Te3 by nanocomposite approach where the inclusions are prepared by the melt spinning process.
采用凝胶-燃烧法在活性炭弱还原气氛下成功合成了新型蓝色发光材料Sr2MgSi3O9∶Eu^2＋。用X射线粉末衍射仪（XRD）、扫描电镜（SEM）、荧光分光光度计等对样品的物相结构、微观形貌及发光性质进行了分析和表征。结果表明：Sr2-xMgSi3O9∶Eux^2＋系列样品的衍射峰数据与Sr2MgSi2O7的JCPDS卡片（卡号：75-1736）衍射峰数据基本一致,属四方晶系。其一次颗粒近似球形,粒径在100nm左右。激发光谱分布在250～450nm的波长范围,主激发峰位于424nm处,次激发峰位于400nm处,可以被InGaN管芯产生的紫外辐射有效激发。发射光谱也为一宽带,最大发射峰位于470nm附近,是典型的Eu^2＋的4f5d…
Intergranular stress corrosion cracking (IGSCC) in austenitic stainless steels occurs as a result of the local grain boundary chromium depletion that can occur through diffusion processes from thermal treatment or fast neutron irradiation. Reliable models of crack nucleation and growth, and their sensitivity to micros…
With an increase in energy demand and a decrease in available traditional energy sources, the world is in need of new and durable energy sources. Dif- ferent kind of energy sources, i.e. wind, water and solar energy systems, are currently being developed. Another energy source for the future is nuclear fusion. The nex…
Very recently, due to miniaturization of devices and rising environmental concern over the usage of lead, lead-free based thin films have attracted immerse amount of attention world-wide. Potassium sodium niobate (KNN) have been selected as the more promising lead-free based ferroelectric material. However, the leakag…
Tato prace se zabýva charakterizaci tenkých orgranosilikonových a SiOx vrstev nanasených metodou plazmochemicke depozice z plynne faze. Vrstvy vznikaly ze směsi hexamethyldisiloxanu a kysliku. SiOx vrstvy byly deponovany v pulznim i kontinualnim režimu vysokofrekvencniho kapacitně i indukcně vazaneho doutnaveho výboje…
The lost-foam casting process using expanded polystyrene foam pattern allows more complex and detailed passages to be cast directly into the part. The advantages of the lost-foam casting process involve, forms complex internal and external shapes without cores, reduces part mass with near net-shape capability, elimina…
Photocatalytic zinc oxide (ZnO) thin films were synthesized and characterized on glass. First, a stable zinc peroxide (ZnO2) nano-particle colloid was produced. The 4 reagents were zinc acetate dihydrate, DI water, H2O2 and PEG 200. The colloid was spin coated and spray coated onto glass substrates, then heated at 450…
In February 2008, a new superconductor family was discovered. This project aims to discuss the various methods used to synthesize these compounds and the different crystal growth methods used. First papers reported that these new superconducting materials have been synthesized within a closed system, which poses the r…
we have successfully employed low temperature combustion method for the preparation of BaAl 2O4:Cr 3+ . Powder X-ray diffraction analysis was used to characterize the as-prepared combustion products, while the optical properties were studied using photoluminescence. The morphological aspect of the resulting powders wa…
Carbon fibre reinforced polymers are commonly used in widespread applications in many industries due to its enhanced mechanical properties and low density. With the increasing number of applications, carbon fibre reinforced composites are now used for load bearing applications such as the floor beams in aircraft bodie…
This thesis aims to characterize both the structural and luminescent properties of several copper(I) cyanide metal-organic networks. Networks incorporating nitrogen-containing ligands were synthesized through a variety of methods. Ligands studied were either diimine, monoamine, or monoimine in nature. A wide array of…
The electrical equipments are widely used in various industrial sectors such as power engineering. For all power equipments, the insulation system will deteriorate with time due to occurrence of partial discharges (PD). In order to prevent failure of electrical equipments, it is desirable to monitor while it is still…
Amyotrophic lateral sclerosis (ALS) is a progressive and still incurable neurodegenerative disease characterized by dying of motor neurons, which leads to fatal paralysis and death. Facts that majority of affected individuals are coming from economically active middle-aged population and that they die paralyzed only 3…
Its point-by-point conception and its nanotechnological manufacture allow for the creation on the back of the lens of an optic surface combining a central zone of stabilized power aimed at near vision, an intermediate zone where the aspherical variation is slight in the beginning in order to create the depth of field.…
Effects of adding excess antimony during the polyol process for synthesizing CoSb3 compound have been studied in this project. It was found that with an initial atomic ratio Co:Sb = 1:4.5, the final sample after hot press contained a single CoSb3 phase. With higher initial Sb levels, extra free Sb phase approved in th…
Micromachined superhydrophobic surfaces by Chen Longquan thesis 2009 xvi, 92 p. : ill. ; 30 cm Superhydrophobic surfaces have attracted a lot of attention since the potential applications of self-cleaning effect in self-cleaning textiles, fluid transport in micro/nanofluidics, bio-MEMS and…Read more ›
The production of energy without polluting our atmosphere is one of the key challenges faced by our generation. Fuel cell, is one of the promising technology to produce clean energy to our future, needs clean hydrogen and air as their feed. Finding out optimum condition for the production of hydrogen from various fuel…