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Online since: October 2014
Authors: Hannalie Lombard, D.G. Hattingh, Peter Madindwa Mashinini
The attractiveness of this alpha-beta titanium alloy for the identified applications lies in the materials good combination of low density, high strength, excellent corrosion resistance and high biocompatibility [1,2].
Acknowledgements The authors wish to thank the staff of Nelson Mandela Metropolitan University Materials laboratory and the National Department of Science and Technology for funding provided via the National Research Foundation (NRF) and the Advance Metals Initiative (AMI) in support of this research.
Collings, Materials properties handbook: titanium alloys, ASM International Materials Park, OH, 2007
Metallurgy and Materials Science Series, London: Edward Arnold, 1981
Materials and design, 31(2010) 2631-2636
Online since: June 2012
Authors: Gang Li, Tong Qing Yang, Jin Fei Wang, Zhao Jin Sun, Jian Qiang Guo
Many efforts have been made to improve the performance of energy storage of AFE materials.
Pb3O4 (95.00%), La2O3(99.99%), ZrO2(99.00%), TiO2(98.00%), SnO2(99.50%), were used as the starting materials.
Lanagan, et al, Alkali-free glass as a high energy density dielectric material, Materials Letters. 63 (2009) 1245-1248
Lu, Fundamentals of Inorganic Materials Science, first ed., Wuhan University of Technology Press, Wuhan, 1996
Wei, et al, Study of low phase transition electric-field and slim-loop hysteresis of (Pb,La)(Zr,Sn,Ti)O3 antiferroelectric ceramics, Journal of Functional Materials. 41 (2010) 531-532
Online since: January 2015
Authors: Gennady A. Naumenko
The general theory of coherent radiation for synchrotron and bremsstrahlung radiation, when radiation is generated directly by charged particles, but not by the material of a target, was developed long ago.
However, there is no general model of coherent radiation for such polarization radiation as transition, diffraction and other types of radiation, when the radiation is generated by the material of a target polarized by the electromagnetic field of relativistic particles.
In this paper, we suggest the simplified algorithm for construction of form factors for different types of polarization radiation of relativistic electrons in the material of a target.
Acknowledgements This work was supported by the State Task of Ministry of Education and Science of Russian Federation № 2456 References [1] T.
Flesher, Synchrotron radiation of charges distributed in space, Russian Physics Journal. 36 1 (1993) 18-20 [17]W.
Online since: February 2024
Authors: Rohit C. Tilwani, Persia Ada N. de Yro, Hirofumi Nakano
A nanomaterial that can be isolated from cellulose --- cellulose nanosphere (CNS), has recently gained significant attention in nanotechnology and material science due to their unique properties and potential in diverse fields [2].
Materials and Methods Materials.
The chemicals and other materials were sourced out from a local distributor in the Philippines.
For further studies, it is advised to incorporate CNS from both sources into biomedical materials such as hydrogels, drug fillers, etc. and examine how it reinforces a particular polymer matrix.
Materials and Minerals, 2015, doi: 10.14456/JMMM.2015.3
Online since: November 2012
Authors: Bin Shen, Zhen Yun Zhang, Qiong Wei Li, Ming Xing Li, Bin Yang
The simulation research on ultrasound signal propagation model for oil and gas pipeline corrosion Shen Bin1, a, Zhang Zhenyun2, b, Li Qiongwei2, c, Li Mingxing2, d, Yang Bin1, e 1National Center for Materials Service Safety, University of Science & Technology Beijing, 100083 2Research Institute of Oil and Gas Technology, Petro China Changqing Oilfield Company, 718500 ashenbin525@126.com,bzhenyun@qq.cn, cweili@qq.cn,dminxing@qq.cn, eustbyangbin@yahoo.cn Keywords: Oil and gas pipeline, Corrosion, Ultrasonic wave, Simulation Abstract: The elastic stress field theory is used to research the quantitative relation model between ultrasonic pulse-echo and layer structure when ultrasonic wave is vertical-incidence transmission, and numerical simulation has demonstrated the models are available. 1.
When ultrasonic pulse launched by probe arrives Material interface through the object to be measured it would be reflected back to probe, then by measuring the travel time of ultrasonic accurately we can determine the thickness of the measured material.
The speed of sound is constant in the certain material, and the computational method is as formula (2) (2) In the formula (2): is the elastic modulus of the material.
is Poisson's ratio of material. is medium density.
Journal of Chemical Industry and Engineering (China), 2008, 59(7): 1812~1817.
Online since: October 2011
Authors: Wei Jia Guo, Bo Yi An
(1) Similar material simulation showed clear caving, rupture, periodic separation terrane and bending of roof in mining process, especially visible separation terrane space at interface between conglomerate rock layer and red layer[8].
Journal of Chinese Earthquake.1988,4(2):123-124.
Journal of Chinese Mining, 2005, 14(10):66-68.
Research on Prevention and Control Measure and Mining Hazard of Huge Thick Cover Rock, Journal of the Chinese Journal of Geological and Hazard Control, 1994, 5(2):37-42. ( in Chinese) [4] Guo Weijia, Shen Guanghan, Yan Qianggang.
Rock Burst Forecasting, Journal of Coal Mining Technology, 1998, 29(1):24-26.
Online since: March 2017
Authors: Chun Ki Yeung, Po Sang Lo
With the promising development of graphene-based polymer composites on a nano-scale, a nanohybrid material, which combine the properties with the unique features of graphene oxide and polymer materials, could be formed [10].
Experiment Materials and Reagents Graphene oxide (GO) solution was synthesized from an acid treated graphite (SIGMA 282863-25G) using the modified Hummer’s method.
Abdiyss, "Preparation and characterization of high efficiency ion-exchange crosslinked acrylic fibers.," Journal of Applied Polymer Science, 2006
Han, "Ultrathin Graphene Nanofiltration Membrane for Water Purification," Advanced Functional Materials, vol. 23, no. 29, pp. 3693-3700, 2013
Gao, "Filtration and transport of heavy metals in graphene oxide enabled sand columns," Chemical Engineering Journal, 2014
Online since: October 2015
Authors: Ekkard Brinksmeier, Marvin Redetzky, Andreas Rabenstein, Benedikt Seidel
The lubrication properties of microbial cells and their biopolymers Marvin Redetzky1,a, Andreas Rabenstein2,b, Benedikt Seidel1,c and Ekkard Brinksmeier1,d 1 Foundation Institute of Materials Science, ECO-Centrum, Badgasteiner Straße 3, 28359 Bremen, Germany 2 Bremen Institute for Material Testing, Department of Microbiology, Paul-Feller-Straße 1, 28199 Bremen, Germany a redetzky@iwt-bremen.de, b rabenstein@mpa-bremen.de, c seidel@iwt-bremen.de, d brinksmeier@iwt-bremen.de Keywords: Lubrication, tribology, microorganisms Abstract.
Furthermore MWF have to fulfill secondary requirements like e.g. an ecological- and material compatibility, anti-foaming properties and a corrosion inhibition.
To overcome these limitations the development of an environmentally friendly and resource-saving MWF on a microbial basis is currently investigated at the Foundation Institute of Materials Science (IWT) in Bremen.
F.: Causes of Skin-Sores and Boils Among Metal Workers: An Investigation by the Houghton Research Staff, British Journal of Dermatology, 33/8-9, 1921, pp. 306 - 307
C.: A Study of the Nature, Growth and Control of Bacteria in Cutting Compounds, Journal of Bacteriology, 1941, pp. 373 - 386
Online since: November 2015
Authors: Nicolae Florin Cofaru, Adrian Florea
Other studies used either different objective functions (tool wear rate, material removal rate or tool lifetime) or other materials than we used (EN24 alloy steel) [6].
The dt value indicates the depth of material to be removed.
The machining is developed at “Compa” S.A Sibiu from a preform of Steel Material type 1.2581.
Mechanical Engineering Letters, Szent István University, Technical-Scientific Journal of the Mechanical Engineering Faculty. 2 (2009) 139-145
Radovanovic, Using genetic algorithms for optimization of turning machining process, Journal of Engineering Studies and Research. 19 (2013) 47-55
Online since: August 2018
Authors: Wen Kui Li, Shan Shan Luo, Zhi Qin Chen, Jian Ping Ai, Wei Xiu Liao, Yan Chen, Yan Ling Yang, Tao Zhou, Li Hong Cheng
Experimental Procedure Materials and methods. 0.5%, 1%, 2% and 4% molar ratios Ce doped ZnO nano-structures were prepared by hydrothermal technique using Zinc nitrate hexahydrate (Zn(NO3)2•6H2O) as substrate, cerium nitrate hexahydrate (Ce(NO3)2•6H2O) as dopant.
The general morphologies of Ce-doped ZnO nano-materials were analyzed by FESEM.
Wang, et al, Synthesis and characterization of Co-doped ZnO powder and its photocatalytic activity, Journal of Ceramics 38 (2017) 548-552
Koodali, Tuning of the crystallite and particle sizes of ZnOnanocrystalline materials in solvothermal synthesis and their photocatalytic activity for dye degradation, J.
Ibrahim, et al, Highly efficient photocatalyst based on Ce doped ZnO nanorods: Controllable synthesis and enhanced photocatalytic activity, Chemical Engineering Journal 229 (2013) 225-233