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Online since: January 2012
Authors: T. Srinivasa Rao, S. Kumaran, M. Thirumurugan, Rengasamy Selvaraj
Introduction
Magnesium and magnesium based materials is one of the most promising mobile hydrogen storage candidates because of their high hydrogen storage capacity (7.6 wt.% for pure Mg), light weight and low cost.
A lot of approaches have been developed to improve absorption/desorption kinetics of Mg-based materials.
Experimental Procedures Pure elemental powders of Mg (-325 mesh), Ni (-325 mesh) and Nb(-325 mesh) with the purity level of 99% were used as starting materials mixed in various compositions and charged into the stainless steel vials.
A: Materials Science & Processing. 80 (1) (2005) 173. 3) Hao Gu, Yunfeng Zhu, Liquan Li, Structures and hydrogen storage properties of Mg95Ni5 composite prepared by hydriding combustion synthesis and mechanical milling, Materials Chemistry and Physics. 112 (2008) 218–222. 4) Hai-Liang Chu, Yao Zhang, Li-Xian Sun, Qi-Feng Tian, Fen Xu, Tao Zhang, Hua- Tang Yuan, Structures and Hydrogen Storage Properties of Mg45M5Co50 (M=Zr, Ni, Al) Ternary Alloys by Mechanical Alloying, Int.
Ström-Olsen, Synergy of hydrogen sorption in ball-milled hydrides of Mg and Mg2Ni, Journal of Alloys and Compounds. 289 (1999) 197–206.
A lot of approaches have been developed to improve absorption/desorption kinetics of Mg-based materials.
Experimental Procedures Pure elemental powders of Mg (-325 mesh), Ni (-325 mesh) and Nb(-325 mesh) with the purity level of 99% were used as starting materials mixed in various compositions and charged into the stainless steel vials.
A: Materials Science & Processing. 80 (1) (2005) 173. 3) Hao Gu, Yunfeng Zhu, Liquan Li, Structures and hydrogen storage properties of Mg95Ni5 composite prepared by hydriding combustion synthesis and mechanical milling, Materials Chemistry and Physics. 112 (2008) 218–222. 4) Hai-Liang Chu, Yao Zhang, Li-Xian Sun, Qi-Feng Tian, Fen Xu, Tao Zhang, Hua- Tang Yuan, Structures and Hydrogen Storage Properties of Mg45M5Co50 (M=Zr, Ni, Al) Ternary Alloys by Mechanical Alloying, Int.
Ström-Olsen, Synergy of hydrogen sorption in ball-milled hydrides of Mg and Mg2Ni, Journal of Alloys and Compounds. 289 (1999) 197–206.
Online since: July 2015
Authors: Hui Li, Xuan Wang, Yong Zhu, Shao Jun Shi, Ning Yu, You Jian Wang
Experiments
Materials and Specimens
The information and the photo of gold jewelry samples are shown in Table 1 and Fig.1, respectively.
:Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms Vol.239(2005), n 1-2, p 114-121
[6] Gao Ruifeng, Du Yuanyuan, Yang Pei: Applied Mechanics and Materials Vol.79(2011),p 248-253
[7] Sulaiman, Meor Yusoff Meor, Muslimin, Masliana:Advanced Materials Research Vol.974 (2014), p 225-229
[8] Xiaolan Song, Xuehui Huang:Fundamentals of Inorganic Materials Science, Chemical Industry Press, Beijing(2006), p.95, In Chinese
:Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms Vol.239(2005), n 1-2, p 114-121
[6] Gao Ruifeng, Du Yuanyuan, Yang Pei: Applied Mechanics and Materials Vol.79(2011),p 248-253
[7] Sulaiman, Meor Yusoff Meor, Muslimin, Masliana:Advanced Materials Research Vol.974 (2014), p 225-229
[8] Xiaolan Song, Xuehui Huang:Fundamentals of Inorganic Materials Science, Chemical Industry Press, Beijing(2006), p.95, In Chinese
Online since: October 2013
Authors: Shu Cai Li, Yi Guo Xue, Nan Zhang
YeQing have shown that nano SiO2 has a high pozzolanic activity, can be used in cement-based materials.
They found that the nano SiO2 material incorporated into the cement-based materials, cement-based material strength and mobility have improved, but the amount of SiO2 should not be too high.
All of this requires exploration of the development of nano-cement materials.
Recursive Packing of Dense Particle Mixture, Journal of Materials Science Letters. 16( 2002) 1249- 1251
Construction and Building Materials. 3(2007) 539-545
They found that the nano SiO2 material incorporated into the cement-based materials, cement-based material strength and mobility have improved, but the amount of SiO2 should not be too high.
All of this requires exploration of the development of nano-cement materials.
Recursive Packing of Dense Particle Mixture, Journal of Materials Science Letters. 16( 2002) 1249- 1251
Construction and Building Materials. 3(2007) 539-545
Online since: December 2018
Authors: Shigeru Kimura, Nobuhiro Yasuda
For structural materials, the thermal expansion often crucially affects mechanical strength.
Part of this work was supported by Grants-in-Aid for Scientific Research on Innovative Areas (Project: “Materials Science on Synchronized LPSO Structure ‒ The Evolution of the Material Science for Innovative Development of the Next-Generation Lightweight Structure Materials ‒ ”) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (Nos. 23109001, 23109002, 23109003 and 24109508).
[5] Information on https://www.rigaku.com/downloads/journal/RJ28-1/RJ28-1_29-30s.pdf [6] D.
Part of this work was supported by Grants-in-Aid for Scientific Research on Innovative Areas (Project: “Materials Science on Synchronized LPSO Structure ‒ The Evolution of the Material Science for Innovative Development of the Next-Generation Lightweight Structure Materials ‒ ”) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (Nos. 23109001, 23109002, 23109003 and 24109508).
[5] Information on https://www.rigaku.com/downloads/journal/RJ28-1/RJ28-1_29-30s.pdf [6] D.
Online since: March 2011
Authors: Zhan Wang, Jian Rong Pan
China
2State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, P.R.
Fig.1 Finite element mesh Fig.2 COMBIN39 element Material Modeling.
Concrete material and steel material properties are specified in Table 1.
Tab.1 Parameters of concrete and steel materials material section [mm×mm] yield strength [MPa] Yong’s modulus [MPa] steel tube Φ133×4.5 387.3 1.96E+5 steel beam 100×68×4.5×7.6 361.3 2.04E+5 core concrete - 32.3 (compressive) 3.14E+4 Experiment Analysis Two specimens were selected, the loading system shown in Fig.3.
Journal of Building Structures, Vol. 25(4), (2004), p.43-49
Fig.1 Finite element mesh Fig.2 COMBIN39 element Material Modeling.
Concrete material and steel material properties are specified in Table 1.
Tab.1 Parameters of concrete and steel materials material section [mm×mm] yield strength [MPa] Yong’s modulus [MPa] steel tube Φ133×4.5 387.3 1.96E+5 steel beam 100×68×4.5×7.6 361.3 2.04E+5 core concrete - 32.3 (compressive) 3.14E+4 Experiment Analysis Two specimens were selected, the loading system shown in Fig.3.
Journal of Building Structures, Vol. 25(4), (2004), p.43-49
Online since: July 2013
Authors: Guo Qing Miao, Zhi Wei Zhang
Introduction
Semiconductor nanowires of different materials have been under intense investigation due to their potential as key building blocks for nano-electronic and nano-photonic applications [1-3].
The InP bulk material’s crystal structure is zincblende(ZB),while the InP nanowires is a wurtzite(WZ) and zincblende(ZB) mixed structure[14].
The optical properties of the InP nanowires drastically change when compared to the properties of InP bulk materials for temperatures below that of liquid nitrogen.
Lieber, Science 293 (2001) 1455-1457
[14] Shuzhen Yu, Guoqing Miaoa, Yixin Jin, Tiemin Zhang, Hang Song, Hong Jiang, Zhiming Li, Dabing Li, Xiaojuan Sun Journal of Alloys and Compounds 479 (2009) 832–834 [15] Jiming Bao,David C.
The InP bulk material’s crystal structure is zincblende(ZB),while the InP nanowires is a wurtzite(WZ) and zincblende(ZB) mixed structure[14].
The optical properties of the InP nanowires drastically change when compared to the properties of InP bulk materials for temperatures below that of liquid nitrogen.
Lieber, Science 293 (2001) 1455-1457
[14] Shuzhen Yu, Guoqing Miaoa, Yixin Jin, Tiemin Zhang, Hang Song, Hong Jiang, Zhiming Li, Dabing Li, Xiaojuan Sun Journal of Alloys and Compounds 479 (2009) 832–834 [15] Jiming Bao,David C.
Online since: April 2014
Authors: Kun Yan Sui, Xin Liu, Le Zhi Wang, Yong Min Wu, Jun Cheng Sun, Zhong Shan Yao, Jian Jian Dong
Structural and mechanical properties of Poly(ε-caprolactone) Biocomposites Reinforced with Different Silk-fibroin Fabric Structures
Yongmin Wu1, Xin Liu 1,2,3,a, Juncheng Sun3, Lezhi Wang3, Zhongshan Yao3, Jianjian Dong3, and Kunyan Sui 2
1 State Key Laboratory of New Textile Materials and Advanced Technology, Wuhan Textile University, Wuhan 430073, People’s Republic of China
2 Chemical Engineering and Environmental Sciences, Qingdao University, Qingdao 266071, People’s Republic of China
3 Shandong Tongda Group, Weifang 261300, People’s Republic of China
a corresponding author: xinliu_wtu@hotmail.com
Keywords: Biocomposites, Poly(ε-caprolactone), Silk-fibroin fabrics, Mechanical properties
Abstract.
For improving the biocompatibility and hydrophilic properties of PCL, natural bioactive fibers such as chitin, chitosan and silk fiber with good biocompatibility have been used and approved to be an effective filler to improve the interactions between cells and materials [2, 3].
Experimental Materials PCL, with a melting point of 60ºC and a number-average molecular weight of 80,000, was obtained from Perstorp UK Ltd.
The pure PCL was a semi-crystalline material, which exhibited three pronounced diffraction peaks at 2θ=21.5º (110), 2θ=22.2º (111), and 2θ=23.9º (200).
Srisuwan, Preparation and characterization of nanocomposite and nanoporous silk fibroin films, Journal of Applied Sciences. 19 (2008) 3518-3522.
For improving the biocompatibility and hydrophilic properties of PCL, natural bioactive fibers such as chitin, chitosan and silk fiber with good biocompatibility have been used and approved to be an effective filler to improve the interactions between cells and materials [2, 3].
Experimental Materials PCL, with a melting point of 60ºC and a number-average molecular weight of 80,000, was obtained from Perstorp UK Ltd.
The pure PCL was a semi-crystalline material, which exhibited three pronounced diffraction peaks at 2θ=21.5º (110), 2θ=22.2º (111), and 2θ=23.9º (200).
Srisuwan, Preparation and characterization of nanocomposite and nanoporous silk fibroin films, Journal of Applied Sciences. 19 (2008) 3518-3522.
Online since: November 2011
Authors: Zi Shan Zheng, Bi Sang Chen, Hong Xu Guo, Ling Feng Huang, Guo Liang Chen, Hua Lin, A Xiao Xu, Heng Lin, Yan Xu
Experimental
Sr(NO3)2(A.R), ZnO(A.R), Eu2O3(99.99%), Lu2O3(99.99%), H3BO3(A.R), ethanol(A.R), nitric acid(HNO3)(A.R) and (CH3CH2O)4Si(TEOS)(A.R) were employed as raw materials.
[7] Joly AG, Chen W, Zhang J, Wang S (2007) J Lumin 126:491 [8] Conga Y, Lia B, Leia B, Wanga X, Liua C, Liua J, Li W (2008) J.Lumin 128:105 [9] Xiao X, Yan BJ (2007) Mater Lett 61:1649 [10] Ling Jiang, Chengkang Chang, Dali Mao, Bin Zhang, Materials Letters 58 (2004) 1825–1829 [11] Blasse, G. and Grabmeier, B.
How does a luminescent material absorb its excitation energy?
In Luminescent Materials.
[13] Luxiang Wang, Li Zhang, Yudai Huang, Dianzeng Jia, Juanjuan Lu, Journal of Luminescence 129 (2009) 1032–1035
[7] Joly AG, Chen W, Zhang J, Wang S (2007) J Lumin 126:491 [8] Conga Y, Lia B, Leia B, Wanga X, Liua C, Liua J, Li W (2008) J.Lumin 128:105 [9] Xiao X, Yan BJ (2007) Mater Lett 61:1649 [10] Ling Jiang, Chengkang Chang, Dali Mao, Bin Zhang, Materials Letters 58 (2004) 1825–1829 [11] Blasse, G. and Grabmeier, B.
How does a luminescent material absorb its excitation energy?
In Luminescent Materials.
[13] Luxiang Wang, Li Zhang, Yudai Huang, Dianzeng Jia, Juanjuan Lu, Journal of Luminescence 129 (2009) 1032–1035
Online since: February 2011
Authors: Zhen Luo, Rui Wang, Tao Yuan
Optimal Design for Fe-Cr-C Hardfacing Alloys with Anti-Wearing
Tao Yuana, Zhen Luob and Rui Wangc
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin, China
achuyuan19@163.com, b lz@tju.edu.cn, c wangrui19840816@163.com
Keywords: Fe-Cr-C; Orthogonal Optimization Design; Hardfacing Alloys; Wear-resistance; Hardness
Abstract.
Experimental materials and methods Experimental materials.
Table 2 Design content of surfacing alloy (ω, %) Level\Factor A B C D 1 0.4 2.5 0.1 0.2 2 0.6 3.0 0.3 0.3 3 0.8 3.5 0.5 0.4 Q235 steel is used as base material and prepared according to JB/T8423-1996, the size is 100 mm × 50 mm × 20 mm. 36 plates with the same size are prepared and every 4 plates belong to a same group which is welded with the same electrode.
Acknowledgments This research was supported by National Nature Science Funds of China (grant 50975197), State High-tech Research and Development Plans (the 863 plans) (grant 2008AA04Z136), Project Funds for New Century Talents of Ministry of Education, Double-Five Science and Technology Projects of Tianjin municipality colleges (grant 2009E6-0020), Integration Project of Production, Teaching and Research of Ministry of Education of Guangdong Province (grant 2007A0903021050), and Applied Basic Research Funds of Tianjin municipality (grant 09JCZDJC24000).
Welding Journal, 1995, 74(8) : 269-278 [2]Yongchuan Han.
Experimental materials and methods Experimental materials.
Table 2 Design content of surfacing alloy (ω, %) Level\Factor A B C D 1 0.4 2.5 0.1 0.2 2 0.6 3.0 0.3 0.3 3 0.8 3.5 0.5 0.4 Q235 steel is used as base material and prepared according to JB/T8423-1996, the size is 100 mm × 50 mm × 20 mm. 36 plates with the same size are prepared and every 4 plates belong to a same group which is welded with the same electrode.
Acknowledgments This research was supported by National Nature Science Funds of China (grant 50975197), State High-tech Research and Development Plans (the 863 plans) (grant 2008AA04Z136), Project Funds for New Century Talents of Ministry of Education, Double-Five Science and Technology Projects of Tianjin municipality colleges (grant 2009E6-0020), Integration Project of Production, Teaching and Research of Ministry of Education of Guangdong Province (grant 2007A0903021050), and Applied Basic Research Funds of Tianjin municipality (grant 09JCZDJC24000).
Welding Journal, 1995, 74(8) : 269-278 [2]Yongchuan Han.
Online since: September 2011
Authors: Liang Wu, Dong Xiao Yu, Wei Dong Duan
Material and Calculation Model
Material Model.
The calculation model of top-air-decked charge structure is shown in Figure 1; the calculation model consists of three materials: explosives, rock(quartz sandstone, muddy shale) and air.
Stem uses quartz sandstone materials to simplify the calculation.
B20091103), and supported by Hubei Province Key Laboratory of Systems Science in Metallurgical Process (Wuhan University of Science and Technology) (Grant No.
Zhong: Journal of wuhan university of technology, Vol.31 (2009) No.16,pp.77-81(in Chinese)
The calculation model of top-air-decked charge structure is shown in Figure 1; the calculation model consists of three materials: explosives, rock(quartz sandstone, muddy shale) and air.
Stem uses quartz sandstone materials to simplify the calculation.
B20091103), and supported by Hubei Province Key Laboratory of Systems Science in Metallurgical Process (Wuhan University of Science and Technology) (Grant No.
Zhong: Journal of wuhan university of technology, Vol.31 (2009) No.16,pp.77-81(in Chinese)