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Online since: May 2021
Authors: Achmad Roesyadi, Elva Febriyanti, Danawati Hari Prajitno, A.R. Yelvia Sunarti
According to Luque et al 2016 biofuels produced are four times faster decomposed than fossil oil, making it more effective in reducing air pollution.
Okamoto et al. (1998) stated that the surface area of alumina is a very decisive parameter in the dispersion of Mo oxides, ie the dispersion of Mo becomes higher when the surface area of alumina gets larger.
NiMo/γ-Al2O3 catalyst has an excellent ability for deoxygenation and hydrogenation reactions (Liu, et al. 2009).
El-Syed, G.
Okamoto et al. (1998) stated that the surface area of alumina is a very decisive parameter in the dispersion of Mo oxides, ie the dispersion of Mo becomes higher when the surface area of alumina gets larger.
NiMo/γ-Al2O3 catalyst has an excellent ability for deoxygenation and hydrogenation reactions (Liu, et al. 2009).
El-Syed, G.
Online since: January 2012
Authors: Xiao Sheng Li, Feng Lan Xing, Wei Lin
[5] Moussa Hamadouche, Alain Meunier, David C, Greenspan et al.
Blanford, Brian T Holland et al, A chemical synthesis of periodic macro-porous NiO and metallic Ni.
[16] S.Radin, P.Ducheyne, T.Kamplain et al., Silica sol-gel for the controlled release of antibiotics.
[17] Radin Shular, Gehan El-Bassyouni, Edward J.Vresilovic, et al，In vivo tissue response to resorbable silica xerogels as controlled-release materials.
[18] Xiaokai Zhang, Xiaofeng Chen, Yingjun Wang, et al.
Blanford, Brian T Holland et al, A chemical synthesis of periodic macro-porous NiO and metallic Ni.
[16] S.Radin, P.Ducheyne, T.Kamplain et al., Silica sol-gel for the controlled release of antibiotics.
[17] Radin Shular, Gehan El-Bassyouni, Edward J.Vresilovic, et al，In vivo tissue response to resorbable silica xerogels as controlled-release materials.
[18] Xiaokai Zhang, Xiaofeng Chen, Yingjun Wang, et al.
Online since: January 2007
Authors: Masuo Hagiwara, Satoshi Emura
Alloy Recommended master alloy compositions
Powder weight ratio
(Mass Pct)
Ti-5.5Al-3.5Sn-3Zr-0.3
Mo-1Nb-0.3Si (IMI829)
MA1 2Al-3.5Sn-2. 83Ti
(24.0mass%Al-42.0Sn-34.0Ti)
MA2 3.5Al-3Zr-0.3Mo-1Nb-0.3Si
(43.2mass%Al-37.0Zr-3.7Mo-12.4Nb-3.7Si)
Ti : MA1 : MA2 = 83.57 :
8.33 : 8.10
Ti-6Al-2Sn-4Zr-2Mo MA1 2.5Al-2Sn-1Mo-2Ti
(33.3mass%Al-26.7Sn-13.3Mo-26.7Ti)
MA2 3.5Al-4Zr-1Mo
(41.2mass%Al-47.1Zr-11.8Mo)
Ti :MA1 : MA2 = 84.0 : 7.5 :
8.5
Ti-6Al-2.75Sn-4Zr-0.4M
o-0.45Si (Ti-1100)
MA1 2Al-2.75Sn-2.83Ti
(26.4mass%Al-36.3Sn-37.3Ti)
MA2 4Al-4Zr-0.4Mo-0.45Si
(45.2mass%Al-45.2Zr-4.5Mo-5.1Si)
Ti : MA1 : MA2 = 83.57 :
7.58 : 8.85
Ti-5Al-2.5Fe MA1 5Al-2.5Fe-2Ti
(52.6mass%Al-26.3Fe-21.1Ti)
Ti : MA1 = 90.5 : 9.5
Ti-6Al-1.7Fe-0.1Si
(Timetal 62S)
MA1 6Al-1.7Fe-0.1Si-4.3Ti
(49.6mass%Al-14.0Fe-0.83Si-35.5Ti)
Ti : MA1 = 87.9 : 12.1
Ti-4.5Fe-6.8Mo-1.5Al
(Timetal LCB)
MA1 4.5Fe-4.5Mo-0.5Al
(MPa) El. (%) E (GPa) σf (MPa) Ti-5.5Al-3.5Sn-3Zr-0.3Mo -1Nb-0.3Si (IMI829) Ti-6Al-5Zr-0.5Mo-0.25Si (IMI685) Ti-6Al-2Sn-4Zr-2Mo Conventional P&S+HIP P&S+β-WQ+HIP Conventional P&S+HIP P&S+β-WQ+HIP Conventional P&S+HIP Colony Fine acicular α Colony Fine acicular α Colony 942 960 911 970 982 1019 1039 1000 1058 1059 4 9 14 12 15 119 330 (Ti-6242) P&S+β-WQ+HIP Fine acicular α 1046 1109 15 119 550 Ti-6Al-2Sn-4Zr-2Mo-0.1Si (Ti-6242S) Ti-6Al-2Sn-4Zr-2Mo/10TiB Conventional P&S+HIP P&S+β-WQ+HIP Conventional P&S+HIP Colony Fine acicular α Colony 970 1020 1202 1058 1117 1253 18 13 2 140 490 Conv.
(MPa) El. (%) E (GPa) σf (MPa) Ti-5.5Al-3.5Sn-3Zr-0.3Mo -1Nb-0.3Si (IMI829) Ti-6Al-5Zr-0.5Mo-0.25Si (IMI685) Ti-6Al-2Sn-4Zr-2Mo Conventional P&S+HIP P&S+β-WQ+HIP Conventional P&S+HIP P&S+β-WQ+HIP Conventional P&S+HIP Colony Fine acicular α Colony Fine acicular α Colony 942 960 911 970 982 1019 1039 1000 1058 1059 4 9 14 12 15 119 330 (Ti-6242) P&S+β-WQ+HIP Fine acicular α 1046 1109 15 119 550 Ti-6Al-2Sn-4Zr-2Mo-0.1Si (Ti-6242S) Ti-6Al-2Sn-4Zr-2Mo/10TiB Conventional P&S+HIP P&S+β-WQ+HIP Conventional P&S+HIP Colony Fine acicular α Colony 970 1020 1202 1058 1117 1253 18 13 2 140 490 Conv.
Online since: June 2010
Authors: Yoshikazu Todaka, Minoru Umemoto, Koichi Tsuchiya, Bui Duc Long
Because of large strain, work softening has been observed in pure Al.
Harai et al [7] measured the hardness of pure Al (99.99%) after HPT.
They [8] did not find any work softening like observed in pure Al.
Edalatia et al [13] conducted HPT experiment using 99.99% purity Hf.
Bancroft, E.L.
Harai et al [7] measured the hardness of pure Al (99.99%) after HPT.
They [8] did not find any work softening like observed in pure Al.
Edalatia et al [13] conducted HPT experiment using 99.99% purity Hf.
Bancroft, E.L.
Online since: August 2018
Authors: Megat Ahmad Kamal Megat Hanafiah, Shariff Ibrahim, Siti Noor Inani Binti Baharuddin, Borhanuddin Ariffin, Nesamalar Kantasamy
In general, the sorption experiment and oil retention capacity was designed based on methods by Dong et al. [15].
For ash content, CG produced a value of 7.80 %, not much different from the literature of 8.24% reported by Kassim et al. [8].
This finding is consistent with the finding by Kow et al. [11] in their characterisation study of bio silica from cogon grass where the carbon content was measured at 41.5 %.
This is way below the oil sorption capacity of 11-14 times found by Dong et al. [15] in their work by utilizing cattail fibre for oil sorption.
El-Nafaty, and I.
For ash content, CG produced a value of 7.80 %, not much different from the literature of 8.24% reported by Kassim et al. [8].
This finding is consistent with the finding by Kow et al. [11] in their characterisation study of bio silica from cogon grass where the carbon content was measured at 41.5 %.
This is way below the oil sorption capacity of 11-14 times found by Dong et al. [15] in their work by utilizing cattail fibre for oil sorption.
El-Nafaty, and I.
Online since: February 2020
Authors: Ravi Shankar Anand, Prashant Prakash, Sanjay Kumar Jha
Zhao et al. [7] explained the weld joint structure and tensile properties of the weld joint which is strongly affected by pin profile.
Hasan et al. [9] predicted the effect of unworn and worn tool geometries on the shape of the weld zone.
Liu et al. [12] developed the relationship between the tensile properties and fracture locations of the FSW joints.
Prashant et al. [19] explained that stepped- conical tool produce better strength with respect to all other three tools.
El Hadrouz, A contribution to a critical review of friction stir welding numerical simulation, J mech mater struct. (2009); 4(2):351-69
Hasan et al. [9] predicted the effect of unworn and worn tool geometries on the shape of the weld zone.
Liu et al. [12] developed the relationship between the tensile properties and fracture locations of the FSW joints.
Prashant et al. [19] explained that stepped- conical tool produce better strength with respect to all other three tools.
El Hadrouz, A contribution to a critical review of friction stir welding numerical simulation, J mech mater struct. (2009); 4(2):351-69
Online since: May 2021
Authors: Houssem Laidoudi, Mohamed Bouzit, I. Guendouci
Bouzit3,b
1,2,3Laboratory of Sciences and Marine Engineering (LSIM), Faculty of Mechanical Engineering,USTO-MB University, BP 1505, El -Menaouer, Oran 31000, Algeria
a,*Houssem.laidoudi@univ-usto.dz, Bouzit_mohamed@yahoo.fr
Keywords: Shear-thinning fluids, annular space, finned cylinder, numerical simulation.
Sakr et al
Laidoudi et al. [15-20] numerically studied the buoyancy-driven flow and heat transfer in annular space under different situation.
Chhabra et al
Alim, N.F.
Sakr et al
Laidoudi et al. [15-20] numerically studied the buoyancy-driven flow and heat transfer in annular space under different situation.
Chhabra et al
Alim, N.F.
Online since: August 2015
Authors: Wen Wen Du, Deng Hui Zhao, Xin Xu, Lin Wang
[3] Xu W, Kim KB, Das J, et al.
Richter, et al.
Alpay.at el.
Zhu, et al.
[24] Cerreta E, Gray III G T, Lawson A C, et al.
Richter, et al.
Alpay.at el.
Zhu, et al.
[24] Cerreta E, Gray III G T, Lawson A C, et al.
Online since: July 2009
Authors: Hideo Nakajima, Ryusuke Nakamura
In is isoelectronic with Al so that In diffusion can be
considered as self-diffusion of Al.
Figure 5 shows a bright field image (BFI) of (a) Cu, (b) Zn, (c) Al, and (d) Pb nanoparticles after oxidation in air at 373 K for 3.6 ks (Cu), 423 K for 3.6 ks (Zn and Pb), and at 295 K for 120 s (Al).
Similarly, hollow Al-oxides were formed after the oxidation of Al nanoparticles below about 8 nm in diameter.
The formation of hollow Cu, Zn, and Al oxides seem to be due to the same mechanism.
Moore and E.L.
Figure 5 shows a bright field image (BFI) of (a) Cu, (b) Zn, (c) Al, and (d) Pb nanoparticles after oxidation in air at 373 K for 3.6 ks (Cu), 423 K for 3.6 ks (Zn and Pb), and at 295 K for 120 s (Al).
Similarly, hollow Al-oxides were formed after the oxidation of Al nanoparticles below about 8 nm in diameter.
The formation of hollow Cu, Zn, and Al oxides seem to be due to the same mechanism.
Moore and E.L.
Online since: October 2008
Authors: Stefano Spigarelli, Lorella Ceschini, Alessandro Morri, Giuliano Sambogna, Mohamad El Mehtedi
El Mehtedi2,b , A.
Introduction There is an increasing use of magnesium alloys for lightweight structural and functional parts in the automotive, aeronautical and electronic industries, due to the attractive combination of low densities (1.74 g/cm 3 versus 2.7 g/cm 3 for Al) and high strength-to-weight ratios, along with good damping capacity, castability, weldability and machinability [1,2].
Al Zn Cu Ca Mn Si Fe Ni 3 1 0.05 0.04 0.02 0.01 0.005 0.005 Table. 1.
Introduction There is an increasing use of magnesium alloys for lightweight structural and functional parts in the automotive, aeronautical and electronic industries, due to the attractive combination of low densities (1.74 g/cm 3 versus 2.7 g/cm 3 for Al) and high strength-to-weight ratios, along with good damping capacity, castability, weldability and machinability [1,2].
Al Zn Cu Ca Mn Si Fe Ni 3 1 0.05 0.04 0.02 0.01 0.005 0.005 Table. 1.