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Online since: June 2014
Authors: Rustam Kaibyshev, Marat Gazizov, Ivan Zuiko
Effect of cold plastic deformation prior to ageing on creep resistance of an Al-Cu-Mg-Ag alloy Marat Gazizova *, Ivan Zuikob and Rustam Kaibyshevc Laboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, Pobeda 85, Belgorod, 308015, Russia agazizov@bsu.edu.ru, bzuiko_ivan@bsu.edu.ru, crustam_kaibyshev@bsu.edu.ru * corresponding author Keywords: Aluminum alloys; Cold working; Precipitation; Microstructure; Mechanical properties.
Introduction The aluminum alloys belonging to Al-Cu-Mg-Ag system exhibit excellent mechanical properties at room and elevated temperatures that make it possible to consider them as a material for use in aerospace engineering for structures operating at elevated temperatures [1-3].
It seems that the YS and UTS at room temperature and rupture time or minimal creep rate at 150°C are the key mechanical properties of this material but these properties are typically opposite to each other.
Online since: March 2015
Authors: Meng Lin Qin, Huan Mei Yao, Jing Yang
Influencing Factors Decomposition of the Carbon Emission of Industrial Energy Consumption in Nanning Downtown Based on LMDI Jing Yang1, a *, Huanmei Yao2,b and Menglin Qin3,c 1 Room 324,College of Environment of Guangxi University, Nanning, Guangxi, China 2 Room 324,College of Environment of Guangxi University, Nanning, Guangxi, China 3 College of Civil Engineering and Architecture of Guangxi University, Nanning, Guangxi, China ayangjing010151088@126.com, b191723450@qq.com, c857040058@qq.com Keywords: LMDI, the carbon emission, Nanning downtown, Industry Abstract.
Thereinto, GDP contribution rates of agricultural and sideline food processing, chemical raw materials and chemical products manufacturing, non-metallic mineral products and nonferrous metal smelting and rolling processing industry and other industries whose[Carbon Emission Contribution Rate]is among the highest are unceasingly declining, from 25.60%, 7.39%, 5.48%, 2.95% in 2003 to 14.28%, 7.06%, 4.57% and 2.49% in 2012 respectively.
Therefore, it is necessary to use energy efficiently, improve energy output, actively promote the research and development of zero-carbon and low-carbon technology, strengthen energy-saving and emission reduction, further improve the mechanism of eliminating backward production capacity, and accelerate the boiler transformation and the use of afterheat and overbottom pressure in the key energy consuming enterprises.
Transform food, chemicals, building materials and other traditional advantageous industries, and complete the transition from extensive divergent development to intensive cluster development, from primary processing to intensive processing development.
Online since: July 2015
Authors: Shinya Tsukamoto, Kazuhito Ohashi, Yuya Takata
Tsukamoto, The Possibility of Dressless Restoration of Grindactivity in Dry Grinding of Carbon, Key Engineering Materials, 389-390 (2009) 356-361
Tsukamoto, Improvement of Grindactivity by Dressless Wheel Treatment in Dry Grinding of Carbon, Advanced Materials Research, 76-78 (2009) 94-100
Online since: July 2015
Authors: Cheng Kuo Lee, Rong Hwei Yeh, T.M. Chao, A.H. Tan
Introduction Hard glass substrates utilized in hard disk media is a key technology for achieving a high areal density of recorded data in a hard disk drive (HDD) [1,2].
Experimental Procedures In this study, three polishing processes were developed using two types of a standard tape and a novel tape made from Nylon-based material along with two types of a standard slurry and a novel NCD abrasive particles slurry (mean size of 15nm), along with a suitable coolant solution which can completely dissolve the NCD abrasive particles.
This data indicates that disk D has the lowest defect level because the polishing process removes enough surface material to eliminate its substrate surface defects while generating very few polished induced surface scratch defects.
Litvinov, Barium hexaferrite nanoparticles: Synthesis and magnetic properties, Materials Science and Engineering: B 176 (2011) 8-13.
Online since: August 2013
Authors: Ya Ji Huang, Bao Sheng Jin, Wu Zuo, Ji Qiang Jia, Yan Yan Wang, Yu Sun
Distribution and characteristics of products from pyrolysis of sewage sludge Yu Sun, Baosheng Jin *, Yaji Huang, Wu Zuo, Jiqiang Jia, Yanyan Wang Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing 210096, China E-mail: sunyu233@163.com (Y.
Experimental Materials.
A lot of researches on fixed bed pyrolysis have been reported for different materials.
Chemical Engineering Journal, 2009, 145(3): 412-419
Online since: August 2004
Authors: Greg Foliente, Xiao Ming Wang, Minh Nguyen
However, the current management practice is mainly based on qualitative estimation and engineers’ experience, and hence may not be reliable or cost effective.
Undoubtedly, an effective and reliable NDE technique plays a key role in asset management of utility poles.
As the result, current management practice is mainly based on qualitative estimation and engineers’ experience.
All NDE methods use some forms of energy propagation through or around a material to infer some important characteristics about the specimen being examined.
The framework could also be applied for utility poles of other materials.
Online since: September 2011
Authors: Wei Zhong Chen, Jian Ping He
Journal of Basic Science and Engineering.
Geotechnical earthquake engineering.
Journal of the geotechnical engineering division, MAY 1975, p.423
Chinese Journal of Underground Space and Engineering.
Earthquake engineering and engineering vibration.
Online since: September 2013
Authors: Yi Ping Wu, Qiu Xia Zhang, Zhong Jie Zhao, Jian Hong Zhou
Stability Evaluation of Karst Foundation Based on Orthogonal Test Yiping Wu1, a, Jianhong Zhou2, b, Qiuxia Zhang1, Zhongjie Zhao1 1 Faculty of Engineering, China University of Geosciences, Wuhan, 430074 2 College of Civil Engineering and Architecture, Guilin University of Technology, Guilin, China, 541004 aypwu@cug.edu.cn, bglzhjh@aliyun.com Keywords: Orthogonal test; Karst foundation; Stability; Substation Abstract.
Through analyzing the engineering geology conditions and the formation mechanism of Huangshi Daye Steel substation karst foundation, we found that there are mostly caves under the karst foundation.
The internal and external factors affecting the vertical settlement of the karst foundation are property of overlaying soil, cave depth and size, property of filling material, groundwater level, foundation load, human engineering activities and cave positional relationship.
Studies on numerical manifold method for determination of safe thickness of karst roof in roadbed[J].Chinese Journal of Geotechnical Engineering.2005, 27(6): 621~625.
[11] Jianpu Zhou, Xianmin LI.Methods of stability analysis in Karst foundation[J].Mining and Metallurgical Engineering.2003, 23(1): 4-11.
Online since: June 2011
Authors: Andrei V. Nazarov, Irina Valikova
Simulation of atomic structure and diffusion characteristics of point defects in BCC and FCC metals Irina Valikova1,a , Andrei Nazarov1,b 1Department of Material Science, Moscow Engineering Physics Institute, 115409, Kashirskoe shosse, 31, Moscow, RUSSIA aIValikova@mail.ru, bavn46@mail.ru Key words: Diffusion, point defects, pressure, formation volumes, migration volumes Abstract.
Fundamentals, methods, materials, diffusion-controlled processes (Springer-Verlag Berlin Heidelberg 2007)
Online since: October 2006
Authors: A. Etin, G.E. Shter, G.S. Grader
Grader Chemical Engineering Department, Technion, Haifa 32000, Israel grader@tx.technion.ac.il Keywords: PZT films, thickness, sol-gel, microstructure, image analysis Abstract: The R&D of state of the art PZT (PbZrxTi1-xO3) films is important due to their piezoelectric, pyroelectric and ferroelectric properties.
These diverse applications rely on the piezoelectric, pyroelectic and ferroelectric properties of the PZT material.
The production of the PZT films is particularly important since they have several key advantages over bulk ceramics that include lower driving voltage and device dimensions as well as easier integration into electronic circuits.
Experimental: For precursor synthesis the following starting materials were used: lead acetate trihydrate Pb(O2C2H3)2·3H2O (99,5%, Fluka), titanium iso-propoxide Ti(OC3H7)4 (97%, Aldrich) and zirconium acetyl acetonate Zr(O2C5H8)4 (98%, Sigma). 1,3-propanediol (99%, Fluka) and acetylacetone (98%, Fluka) were employed as a solvent and stabilizer, respectively.
Showing 72631 to 72640 of 74741 items