Materials Literature
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The lance is the key equipment of SNCR flue gas denitrification technology injection system on the new dry process cement production line.The atomizing effects of reducing agent will directly influence the result of flue gas denitration. In this paper, there are the structure design and experimental analysis on denitr…
Insulating BiFeO3ceramics with a small amount of secondary phase Bi2Fe4O9were prepared by rapid sintering at 840 °C using sol-gel derived fine powders. The ceramics are dense and consist of grains of 3∼8μm in size. Their leakage current density remains lower than 5.5×10−5A/cm2under the applied electrical field below 1…
John W Valley, Aaron J Cavosie, Takayuki Ushikubo, David A Reinhard, Daniel F Lawrence, David J Larson, Peter H Clifton, Thomas F Kelly, Simon A Wilde, Des
본 연구에서는 휴대용 기기에 고분자 전해질막 연료전지(PEMFC)를 적용하기 위하여 상온에서 작동 시의 성능특성을 정상상태와 동적상태에서 관찰하였다. 상대습도 및 공기 화학양론비에 따른 PEMFC성능 변화를 실험적으로 분석하였다. 또한, EIS(Electrochemical Impedance Spectroscopy)를 이용하여 내부 오믹 저항의 변화를 고찰하였다. 35℃ 조건에서 물질 전달률이 감소하여 45℃ 조건에 비해 전압 변동이 10배 정도 크게 관찰되었으며 안정적인 작동을 위해 공기의 화학양론비를 2.5 보다 크게 유지하여야 한다. 또한 낮은 상대습도는 오믹…
BiFeO3-BaTiO3(BF-BT) solid solutions are proved to be a promising candidate for lead-free high-temperature piezoelectric and multiferroic functional materials. In this work, a low-temperature and short-time hydrothermal route was utilized to synthesize BiFeO3-BaTiO3crystallites. The phase evolution was controlled by a…
The Ni-Mn-In alloy occur martensite reverse phase transitions driven by magnetic field in a certain composition range, resulting in the macroscopic strain, and along with the output of up to 108 MPa stress. However, there are some defects impeded practical application of alloy, such as brittleness and low Curie temper…
Effects of a metal oxide structure on the oxygen sensing properties are investigated. In the existence of the etched V-groove gallium oxide geometry, its electrical and sensing properties, i.e., high sensitivity and response time areinvestigated. Grain sizes of the material are dependent on different sputtering condit…
Christopher J Russo, Lori A Passmore; Modifying Graphene Substrates for Imaging Proteins in a Transmission Electron Microscope, Microscopy and Microanalysi
An interdigitated electrode consisted of 50 pairs of 5 μm wide microelectrodes, separated by 5 μm gap has been fabricated using single layer positive photoresist lift-off process. The effect of UV exposure time to electrode width and photoresist overcut angle were optimized for the fabrication of an array interdigitat…
Microstructured ZnO have been synthesized by a simple hydrothermal approach, using ZnCl2as the zinc source and N2H4·H2O as the amine precursor in water-ethylene glycol solution at 120 °C for 8 h. The X-ray diffractrometer pattern indicates the pure phase formation of ZnO. Scanning electron microscope images show that…
US-based SAE International has published the revised J2601 standard, Fueling Protocols for Light Duty Gaseous Hydrogen Surface Vehicles, which will serve as the baseline worldwide for hydrogen stations for refueling fuel cell electric vehicles. This revised standard, announced in the spring [ FCB , April 2014, p9], su…
Supercapacitor energy storage system is commonly composed of a large number of cells in parallel and series, which will increase the system's complexity and decrease its reliability and safety. In order to make sure that the system is in good condition during working cycles, mastering each cell's current performance i…
Robert EA Williams, Santino D Carnevale, Thomas F Kent, David J Stowe, Roberto C Myers, David W McComb; Electron Energy Loss Spectroscopy and Localized Cat
This work is focused on the modeling of low conductive and inhomogeneous composite materials. In a first part, based on the assumption that the conductivity of a woven carbon fiber reinforced epoxy material is negligible in the laminating direction (between the stratums), its reinforcement stratum is modeled by the us…
D Edwards, N Rowlands, D Guarrera, N Erdman, V Robertson, R McLaughlin; Investigation of Multiple, Large Area EDS Detectors on an SEM Capable of Various Mo
Nicholas M Schneider, Michael M Norton, Brian J Mendel, Joseph M Grogan, Frances M Ross, Haim H Bau; Radiolysis during Liquid Cell Electron Microscopy, Mic
P Fraundorf; Digital Darkfield Analysis of Lattice Fringe Images with ImageJ, Microscopy and Microanalysis, Volume 20, Issue S3, 1 August 2014, Pages 824–825, h
The aim of this study is to describe the experimental results of external surface mechanical decontamination of the studied materials forming selected suits. Seven types of personal protective suits declaring protection against radioactive aerosol contamination in different price ranges were selected for decontaminati…
Michael Engstler, Jenifer Barrirero, Naureen Ghafoor, Magnus Odén, Frank Mücklich; 3D Microstructure Characterization and Analysis of Al-Si Foundry Alloys
Transparent and colorless lead fluoride crystals with sizes of 20 × 20 × 20 (mm 3 ) are irradiated with several doses of γ-rays from a 60 Co source. Their transmittance spectra before and after irradiation are measured, and a new parameter ΔT = T b − T a is defined to evaluate the irradiation damage. Three optical abs…