Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: January 2012
Authors: Andrey Belyakov, Rustam Kaibyshev, Valeriy Dudko
Introduction
High-chromium steels with TMLS became widely used materials for components of fossil power plants during the last decade [1].
For instance, a P92 steel is most widely used creep resistant material [1].
Acknowledgements This study was supported by Federal Agency for Science and Innovations, Russia, under grant No. 02.523.12.3019.
Sawada: International Journal of Pressure Vessels and Piping, Vol. 84 (2007), p. 3
Kaibyshev: Metal Science and Heat Treatment, Vol. 52 (2010), p. 100
For instance, a P92 steel is most widely used creep resistant material [1].
Acknowledgements This study was supported by Federal Agency for Science and Innovations, Russia, under grant No. 02.523.12.3019.
Sawada: International Journal of Pressure Vessels and Piping, Vol. 84 (2007), p. 3
Kaibyshev: Metal Science and Heat Treatment, Vol. 52 (2010), p. 100
Online since: July 2013
Authors: Tao Yang, Wei Su, Bin Han, Chao Wang, Ting Ting Liu
The scalar represents the volume fraction of a distinct component (material) in a cell.
Coefficient of volume expansion is a constant for any particular type of material, used in calculating the amount by which the volume of that material will change as a result of temperature change.
Analysis and simulation of micro-fluidic inertial switch, Key Engineering Materials, 503 (2012) 348-353
Height functions for applying contact angles to 3D VOF simulations, International Journal for Numerical Methods in Fluids, 61 (2009) 827-847
Computational fluid dynamics applied to gas-liquid contactors, Chemical Engineering Science, 52 (1997) 3623-3638
Coefficient of volume expansion is a constant for any particular type of material, used in calculating the amount by which the volume of that material will change as a result of temperature change.
Analysis and simulation of micro-fluidic inertial switch, Key Engineering Materials, 503 (2012) 348-353
Height functions for applying contact angles to 3D VOF simulations, International Journal for Numerical Methods in Fluids, 61 (2009) 827-847
Computational fluid dynamics applied to gas-liquid contactors, Chemical Engineering Science, 52 (1997) 3623-3638
Online since: September 2007
Authors: Helmer Fjellvåg, Marc Avice, Ola Nilsen, Bengt Gunnar Svensson, Ulrike Grossner
Svensson
1, e
1
Physics department and Centre for Materials Science and Nanotechnology (SMN), University of
Oslo, Box 1048, Blindern, Oslo 0316, Norway.
2
Chemistry department and Centre for Materials Science and Nanotechnology (SMN), University
of Oslo, Box 1033, Blindern, Oslo 0315, Norway.
Among the alternative gate dielectrics, Al2O3 is one of the most attractive materials for replacing SiO2 gate insulators, exhibiting a large dielectric constant (ε ~ 10), a large band gap (~ 6.2 eV), a good thermal stability and the highest conduction and valence band offsets, ∆Ec = 1.7 eV and ∆Ev =1.2 eV for 4H-SiC, compared to ZrO2 or HfO2 [4,5].
Sibai: Journal de physique IV Vol.11 (2001), p. 139 [7] Y.
Among the alternative gate dielectrics, Al2O3 is one of the most attractive materials for replacing SiO2 gate insulators, exhibiting a large dielectric constant (ε ~ 10), a large band gap (~ 6.2 eV), a good thermal stability and the highest conduction and valence band offsets, ∆Ec = 1.7 eV and ∆Ev =1.2 eV for 4H-SiC, compared to ZrO2 or HfO2 [4,5].
Sibai: Journal de physique IV Vol.11 (2001), p. 139 [7] Y.
Online since: June 2010
Authors: Wiktoria Ratuszek, Adam Bunsch, S.J. Skrzypek, J. Kowalska, W. Rakowski
A.Bunsch 1, S.J.Skrzypek2, J.Kowalska, W.Ratuszek, W.Rakowski
AGH-University of Science and Technology, Krakow, Poland,
1
abunsch@agh.edu.pl, 2skrzypek@agh.ed.pl
Keywords: copper films, electrodepositing, texture, mechanical properties.
For not textured materials value of these indexes can be found at ICCD standards.
The Micro-Hardness Tester (MHT) was applied for mechanical characterization, which provides accurate and reproducible values for materials hardness and elastic modulus.
Shivashankar, Journal of Crystal Growth 275 (2005) p. 1253-57 [4].
Hakamada and other, Materials Science and Engineering A 457 (2007) p. 120-126
For not textured materials value of these indexes can be found at ICCD standards.
The Micro-Hardness Tester (MHT) was applied for mechanical characterization, which provides accurate and reproducible values for materials hardness and elastic modulus.
Shivashankar, Journal of Crystal Growth 275 (2005) p. 1253-57 [4].
Hakamada and other, Materials Science and Engineering A 457 (2007) p. 120-126
Online since: August 2007
Authors: Young Tae Yoo, Ho Jun Shin, Byung Heon Shin, Ji Hwan Kim
., Gwang-ju, Korea(Corresponding Author)
3
Science, Technology, Information & Telecommunication Committee., Seoul, Korea
a
byung2124@hanmail.net, bytyou@chosun.ac.kr, csbn66@hanmail.net, dmyidever@paran.com
Keywords: Laser Welding, Butt Welding, Cold Rolled Carbon steel, Surface Temperature
Abstract.
Introduction Recently, laser welding is broadly used in processes to improve productivity due to the possibility of welding various metals and the characteristics that can overcome traditional limits of welding.[1] When weld using laser beam, which is thermal sources of high density energy, it is possible to do welding with higher aspect ratio and Heat Affected Zone (HAZ) compared with other general welding because the processes of melting and consolidation take place in a short time.[2-3] Since cold rolled carbon steel was welded using Nd:YAG laser, materials and wavelength among laser process variables are predetermined.
This is because of the physical and chemical characteristics of the materials and its comparison is indicated in Fig. 4.
Rejent: Welding Journal. (1999), p.127-136 [2] A.G.Olabi, G.Gasalino, K.Y.Benyounis and M.S.Hashmi:Advances in Engineering Software.(2006),p.1-6 [3] B.Hu and I.M.Richardson: Materials Science and Engineering.(2006),p287-294 0.0 0.1 0.2 0.3 0.4 0.5 0 50 100 150 200 250 300 Stress(Mpa) Strain Base metal P=1275W, v=1.4m/min P=1300W, v=1.4m/min p=1325W, v=1.4m/min Fig. 4 Develop to hardness on the welding distance Fig. 5 Strain-stress relationship for changing laser power -2 -1 0 1 2 70 80 90 100 110 120 130 140 150 160 170 180 Hardness (Hv : 0.5kg) distance from center (mm) Laser Power : 1300W, speed : 1.4m/min Laser Power : 1325W, spped : 1.4m/min
Introduction Recently, laser welding is broadly used in processes to improve productivity due to the possibility of welding various metals and the characteristics that can overcome traditional limits of welding.[1] When weld using laser beam, which is thermal sources of high density energy, it is possible to do welding with higher aspect ratio and Heat Affected Zone (HAZ) compared with other general welding because the processes of melting and consolidation take place in a short time.[2-3] Since cold rolled carbon steel was welded using Nd:YAG laser, materials and wavelength among laser process variables are predetermined.
This is because of the physical and chemical characteristics of the materials and its comparison is indicated in Fig. 4.
Rejent: Welding Journal. (1999), p.127-136 [2] A.G.Olabi, G.Gasalino, K.Y.Benyounis and M.S.Hashmi:Advances in Engineering Software.(2006),p.1-6 [3] B.Hu and I.M.Richardson: Materials Science and Engineering.(2006),p287-294 0.0 0.1 0.2 0.3 0.4 0.5 0 50 100 150 200 250 300 Stress(Mpa) Strain Base metal P=1275W, v=1.4m/min P=1300W, v=1.4m/min p=1325W, v=1.4m/min Fig. 4 Develop to hardness on the welding distance Fig. 5 Strain-stress relationship for changing laser power -2 -1 0 1 2 70 80 90 100 110 120 130 140 150 160 170 180 Hardness (Hv : 0.5kg) distance from center (mm) Laser Power : 1300W, speed : 1.4m/min Laser Power : 1325W, spped : 1.4m/min
Online since: September 2013
Authors: Shu Jiang Zhao
Supporting materials and parameters.
Supporting materials used are bolt, cable, metal mesh, steel ladders, steel corner, and the specific parameters are as follows, and supporting system as shown in fig.2
New technology optimized the strength between supporting materials and surrounding rock, made the supporting system to achieve the best coupling support state, ensured the supporting strength of roadway roof and sides, achieved the roadway support without repair, which was efficient to safety production of coal mine.
Beijing:Science Press,2004.
(in Chinese) [5] Manchao Haihe Jing,Xiaoming Sun. soft rock engineering mechanics[M].Beijing: Science Press,2002.
Supporting materials used are bolt, cable, metal mesh, steel ladders, steel corner, and the specific parameters are as follows, and supporting system as shown in fig.2
New technology optimized the strength between supporting materials and surrounding rock, made the supporting system to achieve the best coupling support state, ensured the supporting strength of roadway roof and sides, achieved the roadway support without repair, which was efficient to safety production of coal mine.
Beijing:Science Press,2004.
(in Chinese) [5] Manchao Haihe Jing,Xiaoming Sun. soft rock engineering mechanics[M].Beijing: Science Press,2002.
Online since: October 2014
Authors: Xiang Rong Luo, Shu Zhong Wang, Ze Feng Jing, Yu Peng Zhang, Qing Luo
There are many precious rare elements gases and compounds, which are indispensable materials of defense industry, atomic energy industry, chemical industry and agriculture industry.
Rare elements such as lithium, sodium, potassium, boron, iodine, bromine, and nuclear materials such as heavy water, hydrogen and oxygen isotopes are extracted and purified from geothermal water.
So it will have some good or bad effect on breeding and crops because of the chemical materials geothermal water contains.
Geothermal water is extracted from the well by a pump and provides heat to villas, Nangong Village Hotel, office and ordinary buildings, geothermal science exhibition center through radiator cycle.
Journal of Thermal Power Engineering, 1991, 6(1): 1-7
Rare elements such as lithium, sodium, potassium, boron, iodine, bromine, and nuclear materials such as heavy water, hydrogen and oxygen isotopes are extracted and purified from geothermal water.
So it will have some good or bad effect on breeding and crops because of the chemical materials geothermal water contains.
Geothermal water is extracted from the well by a pump and provides heat to villas, Nangong Village Hotel, office and ordinary buildings, geothermal science exhibition center through radiator cycle.
Journal of Thermal Power Engineering, 1991, 6(1): 1-7
Online since: May 2014
Authors: Xiang Cai Meng, Hong Bo Li, Xing Ming Zhao, Shi Bin Liu
Effect of Technology For Semi solid state cooling plate on Primary Carbides and Mechanical Property of Hypereutectic High Chromium Cast Iron
Liu Shibin, Meng Xiangcai, Li Hongbo, Zhao Xingming
Institute of Materials Science & Engineering, Jiamusi University, Jiamusi 154007, China
christainvieri@126.com
Keywords: Semi solid state cooling plate; hypereutectic high chromium cast iron; exogenous nucleus; primary carbides;
Abstract.
In addition it also has some advantage of high production efficiency, easy implementation and suitable for the preparation of high-melting semi-solid material.
Materials and Experimental Methods To ensure high chromium cast iron with ultra-high hardness, the experiment was used hypereutectic composition based on iron-carbon phase diagram.
So that the material toughness from three up to 4.62J/cm2.
[3] Tan Jianbo,Li xun,Li Lixin.Development and Applications of Semi-solid Metal Forming[J]: Journal Of HeBei University Of Science And Technology.2003,24(4):24-28
In addition it also has some advantage of high production efficiency, easy implementation and suitable for the preparation of high-melting semi-solid material.
Materials and Experimental Methods To ensure high chromium cast iron with ultra-high hardness, the experiment was used hypereutectic composition based on iron-carbon phase diagram.
So that the material toughness from three up to 4.62J/cm2.
[3] Tan Jianbo,Li xun,Li Lixin.Development and Applications of Semi-solid Metal Forming[J]: Journal Of HeBei University Of Science And Technology.2003,24(4):24-28
Online since: May 2013
Authors: Zhi Bang Yang, Yue Feng Zhu, De Lin Chen
In ANSYS, we define the material properties of the gear.
is less than the material allowable stress.
Shan xi University of Science and Technology (2009) (in Chinese)
JSME International Journal, (1988) 31:598-605
[9] ISO 6336-5 Calculation of Load Capacity of Spur and Helical Gears-part5:Strength and quality of Materials
is less than the material allowable stress.
Shan xi University of Science and Technology (2009) (in Chinese)
JSME International Journal, (1988) 31:598-605
[9] ISO 6336-5 Calculation of Load Capacity of Spur and Helical Gears-part5:Strength and quality of Materials
Online since: September 2013
Authors: X.X. Li, X.Z. Wu, Dan Liu, D.H. Xiao, Y.S. Zhang
Powder metallurgy (P/M) approaches are advantageous in producing near net shapes of components, and therefore largely increase the utilization ratio of materials and reduce machining cost [6, 7].
The raw materials include: Ti powder (99.6%), Mo powder (99.5%), Al powder (99.5%), Ta powder (99.7%), Al-V intermediate alloy powder (99.4%), with the average particle sizes of 48μm, 1.5μm, 2.6μm, 1.2 μm and 74 μm, respectively.
Acknowledgements This work is supported by National Natural Science Foundation of China (51271152, 51021063) and Hunan Provincial Natural Science Foundation (13JJ6006).
Materials World Vol. 15 (2007), p. 32 [3] Valentin N.
The Chinese Journal of Nonferrous Metals.
The raw materials include: Ti powder (99.6%), Mo powder (99.5%), Al powder (99.5%), Ta powder (99.7%), Al-V intermediate alloy powder (99.4%), with the average particle sizes of 48μm, 1.5μm, 2.6μm, 1.2 μm and 74 μm, respectively.
Acknowledgements This work is supported by National Natural Science Foundation of China (51271152, 51021063) and Hunan Provincial Natural Science Foundation (13JJ6006).
Materials World Vol. 15 (2007), p. 32 [3] Valentin N.
The Chinese Journal of Nonferrous Metals.