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Online since: May 2003
Authors: Mika Linden, Sami Areva
Journal Citation (to be inserted by the publisher )
Copyright by Trans Tech Publications
Calcium Phosphate Formation on Chemically Modified Titanium
S.
Materials and Methods In order to improve the bioactivity of a titanium disk they were soaked in 5M NaOH solution at 60o C for 24 h and heat-treated at 600 o C for 1h as described in [1].
In addition, in the XRD patterns (characterization of the bulk material) distinct reflections resulting from sodium titanate were observed after 14 days of immersion in the SBF solutions (Fig. 1b). 0 50 100 150 200 250 300 350 3.6 4.0 4.4 4.8 5.2 Caconcentration/ mg(50 ml SBF) Immersion time / h SBF SBF+BSA SBF+Fib 20 24 28 32 36 SBF+Fib SBF+BSA SBF Ref apatite titanium sodium titanate Intensity/ arb. unit 2Θ / o (a) (b) Fig. 1: a) Evolution calcium concentration in SBF in the presence and absence of proteins as a function of time b) The XRD patterns of the surfaces immersed for 14 days in SBF in the presence and absence of proteins. 600 500 400 300 200 100 0 C(1s) Ti(2p) O(1s) Intensity / arb. unit Binding Energy / eV 354 350 346 342 Ca(2p) 140 136 132 128 P(2p) Fig. 2: XPS spectrum including the high resolution spectra of Ca(2p) and P(2p) of the NaOH and heat treated titanium after 30 min of immersion in SBF.
Acknowledgements: SA thanks Graduate School of Materials Science, Turku, Finland, for financial support.
Materials and Methods In order to improve the bioactivity of a titanium disk they were soaked in 5M NaOH solution at 60o C for 24 h and heat-treated at 600 o C for 1h as described in [1].
In addition, in the XRD patterns (characterization of the bulk material) distinct reflections resulting from sodium titanate were observed after 14 days of immersion in the SBF solutions (Fig. 1b). 0 50 100 150 200 250 300 350 3.6 4.0 4.4 4.8 5.2 Caconcentration/ mg(50 ml SBF) Immersion time / h SBF SBF+BSA SBF+Fib 20 24 28 32 36 SBF+Fib SBF+BSA SBF Ref apatite titanium sodium titanate Intensity/ arb. unit 2Θ / o (a) (b) Fig. 1: a) Evolution calcium concentration in SBF in the presence and absence of proteins as a function of time b) The XRD patterns of the surfaces immersed for 14 days in SBF in the presence and absence of proteins. 600 500 400 300 200 100 0 C(1s) Ti(2p) O(1s) Intensity / arb. unit Binding Energy / eV 354 350 346 342 Ca(2p) 140 136 132 128 P(2p) Fig. 2: XPS spectrum including the high resolution spectra of Ca(2p) and P(2p) of the NaOH and heat treated titanium after 30 min of immersion in SBF.
Acknowledgements: SA thanks Graduate School of Materials Science, Turku, Finland, for financial support.
Online since: September 2016
Authors: Yoshitaka Wada, Shinobu Yoshimura, Tomonori Yamada, Kaworu Yodo
(i) Extract the maximum representative QoI (von Mises stress, absolute value of the displacement and so on) in all time steps for each Material ID, which represents each component in an assembled structure.
(ii) Extract time history response (displacement) of representative finite element nodes, which have maximum representative QoI at (i) for each Material ID.
(iii) Visualize the correlation between the discrete Fourier transform results and QoI values for each Material ID obtained by (ii) on network graph.
Referential Material Properties Young’s Modulus 3,840[MPa] Poisson’s Ratio 0.3 Mass Density 2,000[kg/m3] Fig.3 Geometrical Distribution of Given Material Properties (Mass Density / Young’s Modulus in each pillar) Fig.4 Conventional Visualization of Deformation Diagram at 5.0 sec.
Fig.5 Spectral Analysis Results of Displacement Fig.6 Proposed Network Visualization References [1] S.Yoshimura, K.Kobayashi, H.Akiba, S.Suzuki, M.Ogino, Journal of Nuclear Science and Technology, Vol.52, No.4 (2015), pp.546-567, [2] H.
(ii) Extract time history response (displacement) of representative finite element nodes, which have maximum representative QoI at (i) for each Material ID.
(iii) Visualize the correlation between the discrete Fourier transform results and QoI values for each Material ID obtained by (ii) on network graph.
Referential Material Properties Young’s Modulus 3,840[MPa] Poisson’s Ratio 0.3 Mass Density 2,000[kg/m3] Fig.3 Geometrical Distribution of Given Material Properties (Mass Density / Young’s Modulus in each pillar) Fig.4 Conventional Visualization of Deformation Diagram at 5.0 sec.
Fig.5 Spectral Analysis Results of Displacement Fig.6 Proposed Network Visualization References [1] S.Yoshimura, K.Kobayashi, H.Akiba, S.Suzuki, M.Ogino, Journal of Nuclear Science and Technology, Vol.52, No.4 (2015), pp.546-567, [2] H.
Online since: May 2017
Authors: Luigia Lanni, Arash Salemi, Muhammad Shakir, Raheleh Hedayati, Carl Mikael Zetterling
In Materials Science Forum, volume 740, pages 1065–1068.
[5] Raheleh Hedayati, and Carl-Mikael Zetterling, Material aspects of wide temperature range amplifier design in SiC bipolar technologies.
Journal of Materials Research, 31(19), pages 2928-2935, (2016).
[5] Raheleh Hedayati, and Carl-Mikael Zetterling, Material aspects of wide temperature range amplifier design in SiC bipolar technologies.
Journal of Materials Research, 31(19), pages 2928-2935, (2016).
Online since: September 2007
Authors: Masakazu Okazaki, Motoki Sakaguchi
Experimental Procedures
The material tested in this work is a second generation single crystal superalloy, CMSX-4, to which
the solution and aged treatments were performed.
(v) Regarding the relation between LCF and TMF lives; According to the empirical law which have been established by polycrystalline materials [1-5], the TMF lives under in-phase and out-of-phase conditions are supposed to be almost comparable to the LCF lives which are measured at the maximum and at the intermediate temperatures of the TMF tests, respectively.
Okazaki: Journal of the Society of Materials Science, Japan, Vol.51, No.7, (2005), p.836 [2] T.
(v) Regarding the relation between LCF and TMF lives; According to the empirical law which have been established by polycrystalline materials [1-5], the TMF lives under in-phase and out-of-phase conditions are supposed to be almost comparable to the LCF lives which are measured at the maximum and at the intermediate temperatures of the TMF tests, respectively.
Okazaki: Journal of the Society of Materials Science, Japan, Vol.51, No.7, (2005), p.836 [2] T.
Online since: July 2012
Authors: Jia Horng Lin, An Pang Chen, Po Wen Hwang
Manufacturing and Functions of Bamboo Charcoal/Stainless Steel Composite Fabric
An-Pang Chen1, Po-Wen Hwang2a, Jia-Horng Lin3,4b
1 Department of Mechanical and Aeronautical Engineering, Feng Chia University, Taichung City 407, Taiwan, R.O.C.
2Department of Aerospace and Systems Engineering Feng Chia University, Taichung City 407, Taiwan, R.O.C.
3 Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan, R.O.C.
4School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan, R.O.C.
In order to improve the discomfort of metallic wire texture on the skin, staple fibers are used as the wrap material for the covered yarn.
EXPERIMENTAL Materials SS wire (King's Metal Fiber Technology Co., Ltd) has a diameter of 40μm.
Acknowledge This work would especially like to thank National Science Council of the Taiwan, for financially supporting this research under Contract NSC 99-2622-E-468-001-cc3.
Chiou: Textile Research Journal, Vol. 119, No. 10 (2002), p. 48
In order to improve the discomfort of metallic wire texture on the skin, staple fibers are used as the wrap material for the covered yarn.
EXPERIMENTAL Materials SS wire (King's Metal Fiber Technology Co., Ltd) has a diameter of 40μm.
Acknowledge This work would especially like to thank National Science Council of the Taiwan, for financially supporting this research under Contract NSC 99-2622-E-468-001-cc3.
Chiou: Textile Research Journal, Vol. 119, No. 10 (2002), p. 48
Theoretical Studies of InGaN/GaN Multiple Junction Solar Cell with Enhanced Tunneling Junction Diode
Online since: February 2014
Authors: Ghulam Ali, Haris Mehmood, Muhammad Omar, Tahir Zaidi, Shahzad Hussain
INTRODUCTION
Rapid growths in III-N material system and its huge success in optoelectronic over the last two decades have made it focus of attention for utilization in Photovolatics (PV).
Other properties like, high absorption coefficient, high radiation resistance, and high carrier’s mobility further justify its suitability as a solar cell material.
THEORATICAL & EXPERIMENTAL PARAMETERS OF InxGa1-xN MATERIAL SYSTEM In this section, the basic parameters and equations required for the designing of InGaN based multi junction solar cells are discussed.
[3].M E Levinshtein, Sergey L Rumyantsev, Michael Shur 2001Properties of advanced semiconductor materials: GaN, AlN, InN, BN, SiC, SiGe New York Wiley p.2 [4].Ashiskumar Patel, Mark Hoffbauer, ToddWillamson, Alicia Salazar and Frank Archuleta Characterization of InGaN based Photovoltaic Devices
[6].L.Hsu and W.Walukiewicz 2008 Journal Of Applied Physics 104, 024507 [7].Lother A.Reichertz, Iulian Gherasoiu, Kin Man Yu, Joel W.Ager III, Vincent M.Kao, and Wladek Walukiewicz 2010 35th IEEE Conf. on Photovoltaic Specialists (PVSC),pp.001044 – 001047
Other properties like, high absorption coefficient, high radiation resistance, and high carrier’s mobility further justify its suitability as a solar cell material.
THEORATICAL & EXPERIMENTAL PARAMETERS OF InxGa1-xN MATERIAL SYSTEM In this section, the basic parameters and equations required for the designing of InGaN based multi junction solar cells are discussed.
[3].M E Levinshtein, Sergey L Rumyantsev, Michael Shur 2001Properties of advanced semiconductor materials: GaN, AlN, InN, BN, SiC, SiGe New York Wiley p.2 [4].Ashiskumar Patel, Mark Hoffbauer, ToddWillamson, Alicia Salazar and Frank Archuleta Characterization of InGaN based Photovoltaic Devices
[6].L.Hsu and W.Walukiewicz 2008 Journal Of Applied Physics 104, 024507 [7].Lother A.Reichertz, Iulian Gherasoiu, Kin Man Yu, Joel W.Ager III, Vincent M.Kao, and Wladek Walukiewicz 2010 35th IEEE Conf. on Photovoltaic Specialists (PVSC),pp.001044 – 001047
Online since: September 2013
Authors: Xi Wang, Chang Liang Xu
Analysis on Fracture Accident of the Roll and Universal Joint
Xi Wang1,a, Changliang Xu1,b
1University of Science and Technology Liaoning, Anshan114051, P.R.China
aawx1870@yeah.net, bldxuchangliang@163.com
Keywords: Rolling mill, Universal joint, Stress, Finite element analysis
Abstract.
According to the data of universal joint shaft drawing data, label materials are BS10250-3, 30NiCr Mo8; Rm =850 MPa, Re= 640 MPa.
This stress is less than the material yield limit, so in normal operation (including the biting etc uneven load characteristics) it should not be broken.
The force caused by the torque is as follows: (7) The roller’s material is ductile iron, the allowable shearing stress is 24Mpa, therefore, the shearing stress meet the strength need.
Journal of Agricultural Mechanization Research. 2003,4:96-97.
According to the data of universal joint shaft drawing data, label materials are BS10250-3, 30NiCr Mo8; Rm =850 MPa, Re= 640 MPa.
This stress is less than the material yield limit, so in normal operation (including the biting etc uneven load characteristics) it should not be broken.
The force caused by the torque is as follows: (7) The roller’s material is ductile iron, the allowable shearing stress is 24Mpa, therefore, the shearing stress meet the strength need.
Journal of Agricultural Mechanization Research. 2003,4:96-97.
Online since: December 2012
Authors: Zhuang Wen Wu, Guan Ming Feng, Hong Chen, Da Hong Hu
TWC is built by ceramic (basic materials, MgO2, Al2O3 and SiO2) coated with -Al2O3.
According to the carrier material and the physical and chemical properties of the coating material, it is assumed that the exhaust gas temperature, concentration and speed on the same cross section of the hole is uniform in the carrier channel, and it’s laminar flow in the channels.
And the solid energy conservation mathematical model can be written as: (4) Where: is the carrier material density; is ceramic carrier component of the specific heat; is thermal conductivity of the ceramic substrate in the direction; is the reaction heat of the -st reaction.
Automotive Catalytic Converters Flow Field Numerical Simulation and Its Application in Structural Optimization [J] Journal of the Internal Combustion Engine, 2000 [4] Zhou Yi, Liu Xinmin, Gao Weimin.
Mechanical Science and Technology 2004, 23 (8) :908-911 [7] AMESim User Manual
According to the carrier material and the physical and chemical properties of the coating material, it is assumed that the exhaust gas temperature, concentration and speed on the same cross section of the hole is uniform in the carrier channel, and it’s laminar flow in the channels.
And the solid energy conservation mathematical model can be written as: (4) Where: is the carrier material density; is ceramic carrier component of the specific heat; is thermal conductivity of the ceramic substrate in the direction; is the reaction heat of the -st reaction.
Automotive Catalytic Converters Flow Field Numerical Simulation and Its Application in Structural Optimization [J] Journal of the Internal Combustion Engine, 2000 [4] Zhou Yi, Liu Xinmin, Gao Weimin.
Mechanical Science and Technology 2004, 23 (8) :908-911 [7] AMESim User Manual
Online since: February 2014
Authors: Xin Yue Liu, Bing Hu, Ming Jian Luo
Introduction
In-situ FTIR spectroscopy have a wide range of applications in the characterization of materials and catalysts.
It can be used for the determination of temperature-property relationship of materials,[1-3] the characterization of acid (pyridine adsorption, adsorption of ammonia), the characterization of metals and metal oxides (adsorption of CO adsorption, NO). [4-8] In-situ FTIR can also be used to study the kinetics.[9-11] In-situ FTIR cell is the key apparatus for performing the in-situ FTIR study.
Thus it is useful to measure the variation of hydroxyl of catalyst and material.
NAKASHIMA, Journal of Mineralogical and Petrological Sciences 103 (2008) 112-115
It can be used for the determination of temperature-property relationship of materials,[1-3] the characterization of acid (pyridine adsorption, adsorption of ammonia), the characterization of metals and metal oxides (adsorption of CO adsorption, NO). [4-8] In-situ FTIR can also be used to study the kinetics.[9-11] In-situ FTIR cell is the key apparatus for performing the in-situ FTIR study.
Thus it is useful to measure the variation of hydroxyl of catalyst and material.
NAKASHIMA, Journal of Mineralogical and Petrological Sciences 103 (2008) 112-115
Online since: September 2007
Authors: Hidetoshi Sakamoto, Kousei Takahashi, Olivier Fournier, Kousuke Kawabata, Tetsuya Hiwatashi, Kazuyoshi Fukagawa
Formability Analysis of the Mg-alloy AZ31
Hidetoshi Sakamotoa, Olivier Fournier,Kousuke Kawabata,
Tetsuya Hiwatashi, Kazuyoshi Fukagawa and Kousei Takahashib
Graduate School of Science & Technology, Kumamoto University,
2-039-1 Kurokami, Kumamoto - Japan
a
sakamoto@mech.kumamoto-u.ac.jp, bktakahashi@kmt-iri.go.jp
Keywords: Magnesium alloy AZ31 sheet; Cylindrical deep drawing; Formability.
Because of those properties, Mg alloys have been widely used even for structural components in the automobile, aerospace and electronics industry to replace some existing materials [1, 2].
Materials and Experimental method Uniaxial tensile tests were carried on an AG-25TB Autograph from SHIMAZU Co. equipped with an heating furnace.
The deep drawing apparatus is a press machine Type TM080K from AMINO Co., its main components consist of a die, a cylindrical punch (diameter 100mm) and a blank holder all made from SUS301 material which is a stainless steel alloy corresponding to X12CrNi17.7 in the European standard notation.
Higashi: International Journal of Plasticity Vol.17 (2001), p.387 [4] A.
Because of those properties, Mg alloys have been widely used even for structural components in the automobile, aerospace and electronics industry to replace some existing materials [1, 2].
Materials and Experimental method Uniaxial tensile tests were carried on an AG-25TB Autograph from SHIMAZU Co. equipped with an heating furnace.
The deep drawing apparatus is a press machine Type TM080K from AMINO Co., its main components consist of a die, a cylindrical punch (diameter 100mm) and a blank holder all made from SUS301 material which is a stainless steel alloy corresponding to X12CrNi17.7 in the European standard notation.
Higashi: International Journal of Plasticity Vol.17 (2001), p.387 [4] A.