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Online since: March 2013
Authors: You Wang, Liang Wang, Xiao Guang Sun
Preparation of 8YSZ and Double-ceramic-layer La2Zr2O7/8YSZ Thermal Barrier Coatings on GH4169 Superalloy Substrates and Their Static High Temperature Oxidation Behaviour Liang Wang1,2,a,*, You Wang2,b and Xiaoguang Sun2,c 1 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2 Laboratory of Nano Surface Engineering, Department of Materials Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001 China aL.Wang@mail.sic.ac.cn, bwangyou@hit.edu.cn, croam.sun@gmail.com Keywords: Thermal barrier coatings, Atmospheric plasma spray, High temperature oxidation, Finite element simulation.
Thermal barrier coatings (TBCs) are very important ceramic coating materials due to their excellent performance at high temperature.
La2Zr2O7 (LZ) is one of the candidate materials that can be used for TBCs.
Materials science-Thermal barrier coatings for gas-turbine engine applications, Science. 296(2002)280-284
Zirconates as new materials for thermal barrier coatings, J.
Online since: January 2012
Authors: Jing Xin Hao, Wen Jin Liu
Center of Furniture and Furnishing, Changsha, Hunan, 410004, China ahaojingxin1@163.com, bcsfulwj@163.com Key Words: BP artificial network, time study, automatic edgebanding machine, Matlab R2009b.
Test material, equipment, test method Material.
The test materials are melamine boards, thickness is 18mm, the base board is MDF made from Dare Global (Asia) Company, and the test board includes different size, such as the small one for drawer front board, the middle one for shelf of wardrobe, the big one for side board of wardrobe.
Generally the feeding speed of machine is set up at high level to avoid the waiting of operator, so the feeding speed is set up at 25m/min for this experiment which lead to the different distance between two parts, and the operation time should be watched and measured by engineer.
There are two methods to measure the time: one is called the direct measurement method, the engineer directly measure the parts operation time by stop watch when he stands up beside the operator; another is called indirect measurement method, the engineer will not directly measure the operation time, but to measure the distance between two parts, then the time is calculated by the formation (t= (l1+l2)/v).
Online since: February 2012
Authors: Yu Qi Liu, Yun Ming Hu, Wen Zhong, Sheng Qiang Li, Heng Jian Xu
The selected material has a nearly incompressible response which can also be used to evaluate the volume locking.
The detailed material parameters are given in [7].
The coin material is brass with isotropic hardening whose parameters are as: Young’s modules E=106GPa, Poisson’s ratio ν=0.37.
The key factor related to this defect is the forming force which is determined mainly by the experience of engineers.
Online since: September 2013
Authors: Yan Wen Wu, Meng Chen, Jie Ouyang, Xian He Shi
Optimization of ultrasonic-assisted preparation of liposome-encapsulated paprika red and its improved light irradiation stability Xianhe Shi 1, 2, a , Meng Chen1, 2, b , Yanwen Wu3, c , and Jie Ouyang1, 2, d, * 1 Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China 2 Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing 100083, China 3 Beijing Center for Physical and Chemical Analysis, Beijing 100089, China a 516527544@qq.com, b 248328428@qq.com, c 1258923605@qq.com, d ouyangjie@bjfu.edu.cn (J.
Materials and methods Materials Paprika red was purchased from Beijing Jin-ye Bioengineering Co.
Sonication time was a key factor in the processing of liposome-encapsulated paprika red.
Online since: December 2012
Authors: Nurak Grisdanurak, Anupap Tosuwan, Kitirote Wantala
Manganese loaded on Titania Surface by Impregnation Method for Photocatalytic Degradation of Reactive Red-3 dye Kitirote Wantala 1, 2, a Anupap Tosuwan3, b, and Nurak Grisdanurak3, c 1 Department of Chemical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand 2 Center of Excellence on Hazardous Substance Management (HSM), Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand 3 Center of Excellence on Hazardous Substance Management (HSM), Department of Chemical Engineering, Faculty of Engineering, Thammasat University, Pathumthani 12120, Thailand akitirote@kku.ac.th, banupap_tosuwan@hotmail.com, cgnurak@engr.tu.ac.th (corresponding author) Keywords: Reactive Red-3, Box-Behnken, Mn/TiO2 Abstract: The aim of this work focused on the preparation of Mn2+ doped on TiO2 by impregnation method for the photocatalytic degradation of Reactive Red-3 dye aqueous solution.
Materials and Methods 2.1.
Surface area is one of key factors for photocatalytic reaction.
Shao, “Mn-doped TiO2 nanopowders with remarkable visible light photocatalytic activity,” Materials Letters, vol. 65, no. 13, pp. 2051–2054, Jul. 2011
Grisdanurak, “Electronic Chemical Properties of Vanadium Doped TiO2 for Photocatalytic Degradation of BTEX,” Materials Science Forum, vol. 700, pp. 223–226, Sep. 2011
Online since: July 2011
Authors: Hong Yuan Fang, Jian Guo Yang, Xue Song Liu, Lu Yong Huang, Hai Bo Pan
Control of Cold Welding Cracks in 30CrMnSi Steel by Welding with Trailing Impacting and Rolling Jianguo Yanga, Luyong Huangb, Haibo Panc, Xuesong Liud and Hongyuan Fange State Key Laboratory of Advanced Welding Production and Technology, Harbin Institute of Technology, Harbin 150001, China ayangjianguo@hit.edu.cn, b956277656@qq.com, chaibo0217@yahoo.com.cn, dliuxuesong@hit.edu.cn, ehyfang@hit.edu.cn Keywords:Welding with trailing impacting and rolling, cold welding crack, welding residual stress, 30CrMoSi steel Abstract.
Callister, Jr., Materials Science and Engineering: An Introduction, Seventh Edition, John Wiley & Sons, Inc., Publication, 2007, pp. 362,149 [2] Sindo Kou, Welding Metallurgy, Second Edition, John Wiley & Sons, Inc., Publication,2002, pp. 405, 411, 432 [3] Kim H J.
Loureiro, Effect of Heat Input on Plastic Deformation of Undermatched Welds, Journal of Materials Processing Technology. 128(2002)240-249 [11] C.
Bhadeshia, Very Strong Bainite, Current Opinion in Solid State and Materials Science. 8(2004)251-257 [13] H.
Online since: June 2010
Authors: Cong Bo Li, Qiu Lian Wang
Environmental Performance Measurement for Green Manufacturing Program Based on BP Neural Network Qiu Lian Wang 1, a, Cong Bo Li 2, b 1 School of Economics & Management, Nanchang University, Nanchang 330031, China 2 College of Mechanical Engineering, Chongqing University, Chongqing 400030, China a wangqiulian@163.com, bcqulcb@163.com Keywords: Green Manufacturing (GM); performance measurement; BP neural network; life cycle Abstract.
And the Environmental Performance Measurement System is a key issue of GM studies [2], because it is a tool for evaluating the effects of GM operation and guiding further implementation [3].
Measures in Application level. (1) Material utilization rate is equal to the weight per product divided by raw material input per product. (2) Toxic and harmful material utilization rate amounts to toxic and harmful material weight per product divided by weight per product. (3) Energy consumption.
The training samples for the BPNN model Primary measure Secondary measure 1 2 3 4 5 6 7 8 9 10 Fundamental construction level Top management 0.8 0.7 0.8 0.8 0.6 0.9 0.8 0.4 0.5 0.3 GM program team building 0.8 0.8 0.6 0.7 0.7 0.8 1.0 0.4 0.4 0.3 GM training 0.8 0.9 0.5 0.6 0.6 1.0 0.8 0.3 0.2 0.2 Enterprise's financial support 0.8 0.9 0.7 0.8 0.8 1.0 0.6 0.2 0.3 0.3 Construction of environemntal database 0.6 0.6 0.7 0.8 0.5 0.8 0.6 0.2 0.2 0.2 Anticipation to social environmental project 0.8 0.7 0.7 0.8 0.6 0.8 0.8 0.3 0.2 0.3 Application level Material utilizatiuon 0.9 0.8 0.7 0.7 0.6 0.8 0.7 0.6 0.6 0.7 Toxic and harmful material utilization 1.0 0.8 0.8 0.9 1.0 0.9 1.0 0.8 0.4 0.8 Energy consumption 0.6 0.9 0.7 0.8 0.6 0.8 0.8 0.8 0.7 0.7 Wastewater discharge 0.6 0.5 0.8 0.8 0.6 0.8 1.0 0.6 0.8 0.2 Exhaust emission 0.6 0.5 0.6 0.9 0.6 0.8 0.7 0.2 0.2 0.8 Solid waste discharge 0.5 0.5 0.7 0.8 0.6 0.9 0.7 0.8 0.6 0.6 Other
Online since: August 2013
Authors: Hui Zhang, Jie Yao Song, Jian Chao Zhan
Fabrication of Magnetic Cenosphere Deposited with Fe3O4 Nanoparticles by Hydrothermal Method Hui Zhang1, a, Jieyao Song1,b and Jianchao Zhan2,c 1 School of Textile & Materials, Xi'an Polytechnic University, Xi’an, 710048, China 2 College of Material and Textile Engineering, Jiaxing University, Jiaxing, 314001, China ahzhangw532@163.com, bsjy19880104@163.com, czhang1jian2chao3@163.com Keywords: Cenosphere, Magnetite Fe3O4, Hydrothermal Abstract.
The electrons can hop between Fe2+ and Fe3+ ions in the octahedral sites at room temperature, rendering it an important class of half–metallic material [8].
The formation of a passive coating of inert materials e.g. inorganic oxides as well as organic polymers on the surfaces of magnetite nanoparticles could help to prevent their aggregation in dispersant and improve their chemical reactivity and stability [11-15].
Acknowledgements The authors gratefully acknowledge the financial supports of the key discipline construction of higher education of Shaanxi province (the special fund) and the Scientific and Technological Project (No.2012R10012-09) from Department of Science and Technology of Zhejiang Province of China.
Online since: January 2017
Authors: Shou Zhong Wang, Tong Zhang, Chun Hong Dong
Experimental Study on the Emergency Disposal Agent for Methanol Leakage Tong ZHANG1, Shou-Zhong WANG1,a,*, Chun-Hong DONG1 1Center for Engineering Design and Research under the Headquarters of General Equipment; Beijing, China a18901181265@189.cn *Corresponding author Keywords: Methanol, Leakage, Foam, Decontamination, Emergence Disposal.
Introduction Methanol is an important basic raw material and excellent fuel in the organic chemical industry and is used for the synthesis of a number of organic products, including formaldehyde, chloropropane, acetic acid, methylamine etc.
At the same time, it is also the raw material of medicines and pesticides and used for the synthesis of DMT (dimethyl terephthalate) and MA (methyl acrylate).
The emergency disposals to methanol leakage in the existing methanol MSDS mainly include: The common method is using sand or other non-flammable materials to adsorb or absorb or a large amount of water to flush for small amount of methanol leakage.
[4] Katsumata PT, Kastenberg WE, Fate and transport of methanol fuel from spills and leaks[J], Hazardous waste & Hazardous materials,1996, 13(4): 485-498
Online since: December 2011
Authors: Yun Zhang, Xin Ke, Guang Zhen Xu, Lin Lin Niu, Xin Zhao, Run Dong Li
Study on The Adsorption-Desorption Behavior of Cr in Soil as Affect by Zeolite Xin Ke1 ,Guangzhen Xu1,Linlin Niu1,Xin Zhao1, Rundong LI1 and Yun Zhang2,a 1Institute of Clean Energy & Environmental Engineering, Shenyang Aerospace University, Shenyang, China 2College of Soil & Environment, Shenyang Agricultural University, Shenyang, China axingyun92757@163.com Key words: zeolite, heavy metal, adsorption-desorption, kinetics, thermodynamics Abstract.
As a dangerous material, Cr (VI) compounds have very strong oxidability and strong toxicity, World Health Organization has confirmed Cr6+ compounds as carcinogen.
Adsorption is a process by which the heavy metal contaminants are removed from aqueous solution through sorption onto the surface of a material[3].By adding exogenous chromium solution into Brown soils, this paper analyses adsorption, desorption characteristics of Brown soil with or without zeolite through the thermodynamics, Dynamic equations, it can provide references for the safety evaluation and treatment of Cr contaminated soils.
Materials and Methods Soil Collecting and Pretreatment.
It is beacause that: First of all, zeolite is a typical silicate mineral which has mesh structures, its porous structure has a high adsorption ability to Cr(III) while weak adsorption ability to Cr(VI), reduction materials in soil could change Cr(VI) into Cr(III)[7] which could be adsorbed by zeolite;Meanwhile , adding zeolite can rise voidage in soil, increase adsorption amount to Cr.
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