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Online since: July 2020
Authors: Hong Ngee Lim, Sook Keng Chang, Zulkarnain Zainal, Asma Samsudin, Laimy Mohd Fudzi
ZnO coated substrate’s 1 x 1 cm2 deposition area was immersed in electrolytic bath containing a mixture of 10 mM zinc acetate dehydrate and 10 mM selenium dioxide.
The electrodeposition was carried out at -0.7 V for 1 minute.
According to XRD of ZnSe/ZnO sample as shown in Fig. 1, a series of peaks corresponding to: (1 0 0), (0 0 2), (1 0 1), (1 0 2), (1 1 0), (1 0 3), (1 1 2), (0 0 4) and (2 0 2) planes representing hexagonal wurzite structure of ZnO with JCPDS file of 00-003-0888 were observed.
Table 1.
References [1] I.
The electrodeposition was carried out at -0.7 V for 1 minute.
According to XRD of ZnSe/ZnO sample as shown in Fig. 1, a series of peaks corresponding to: (1 0 0), (0 0 2), (1 0 1), (1 0 2), (1 1 0), (1 0 3), (1 1 2), (0 0 4) and (2 0 2) planes representing hexagonal wurzite structure of ZnO with JCPDS file of 00-003-0888 were observed.
Table 1.
References [1] I.
Online since: February 2011
Authors: Xiao Min Cheng, Yuan Yuan Li, Yong Gang Tan, Xin Chen
Composition
AB1
Al-8.5Si-9.9Cu
BCD1
Al-21.9Cu-18.2Mg-1.8Zn
AB2
Al-8.5Si-19.0Cu
BCD2
Al-22.5Cu-18.0Mg-4.0Zn
AB3
Al-8.5Si-29.3Cu
BCD3
Al-21.7Cu-18.4Mg-5.7Zn
BC1
Al-19.3Cu-14.0Mg
BCDS1
Al-21.9Cu-17.9Mg-5.8Zn-1.1Si
BC2
Al-19.3Cu-24.0Mg
BCDS2
Al-22.1Cu-18.1Mg-6.1Zn-1.9Si
BC3
Al-20.0Cu-32.3Mg
BCDS3
Al-22.5Cu-18.2Mg-5.8Zn-2.9Si
BD1
Al-20.1Cu-10.0Zn
BCDS4
Al-4.3Cu-18.1Mg-6.2Zn-2.1Si
BD2
Al-21.1Cu-19.7Zn
BCDS5
Al-10.0Cu-17.9Mg-6.0Zn-1.9Si
BD3
Al-18.7Cu-30.5Zn
BCDS6
Al-15.8Cu-18.2Mg-6.1Zn-1.9Si
The corrosion experiments of Cr20Ni80 alloys in Al-7% Si alloy and Al-Cu-Mg-Zn alloy.
A thermal cycle consisted of a melting (1 hour) and a solidification process (2 hours).
Table 2 Experimental method of Cr20Ni80 alloys in Al-7% Si alloy at 700 Number of samples B1 B2 B3 B4 B5 Space of time(h) 1 1 1 1 1 Cumulative time (h) 1 2 3 4 5 Table 3 Experimental method of Cr20Ni80 alloys in Al-Cu-Mg-Zn alloy at 700 Number of samples C1 C2 C3 C4 C5 C6 C7 Space of time(h) 9 9 9 9 9 9 9 Cumulative time (h) 9 18 27 36 45 54 63 Number of cycles 3 6 9 12 15 18 21 Results and discussion Phase change temperature and total thermal energy of thermal storage materials.
Fig.1 and Fig.2 shows the Corrosion kinetics of Cr20Ni80 in Al-7%Si alloy and Al-Cu-Mg-Zn alloy, respectively.
References [1] M.
A thermal cycle consisted of a melting (1 hour) and a solidification process (2 hours).
Table 2 Experimental method of Cr20Ni80 alloys in Al-7% Si alloy at 700 Number of samples B1 B2 B3 B4 B5 Space of time(h) 1 1 1 1 1 Cumulative time (h) 1 2 3 4 5 Table 3 Experimental method of Cr20Ni80 alloys in Al-Cu-Mg-Zn alloy at 700 Number of samples C1 C2 C3 C4 C5 C6 C7 Space of time(h) 9 9 9 9 9 9 9 Cumulative time (h) 9 18 27 36 45 54 63 Number of cycles 3 6 9 12 15 18 21 Results and discussion Phase change temperature and total thermal energy of thermal storage materials.
Fig.1 and Fig.2 shows the Corrosion kinetics of Cr20Ni80 in Al-7%Si alloy and Al-Cu-Mg-Zn alloy, respectively.
References [1] M.
Online since: October 2011
Authors: Janakarajan Ramkumar, M. Ravi Sankar, V.K. Jain
Thus the shear viscosity gradually decreases (Fig. 1).
Fig.1.
BARC/ME/20060271) and Counsil of Scietific and Industrial Research (CSIR), New Delhi, (porject No. 22 (0479)/09/EMR-2).
REFERENCES [1] L.
Kar, “Rheological characterization and performance evaluation of a new medium developed for abrasive flow finishing,” International Journal of Precision Technology, vol. 1, 2010, pp-302 – 313
Fig.1.
BARC/ME/20060271) and Counsil of Scietific and Industrial Research (CSIR), New Delhi, (porject No. 22 (0479)/09/EMR-2).
REFERENCES [1] L.
Kar, “Rheological characterization and performance evaluation of a new medium developed for abrasive flow finishing,” International Journal of Precision Technology, vol. 1, 2010, pp-302 – 313
Online since: October 2013
Authors: Daniel Eugeniu Crunteanu, Gabriel Dediu
Automatic control system for gas turbines test rig
Dediu Gabriel1,a, Crunteanu Daniel-Eugeniu2,b
1 Ph.
D., University Politehnica of Bucharest, Faculty of Aerospace Engineering, 1-7 Polizu Street, 011061, Bucharest 1, Romania agabriel.dediu@gmail.com, bcrunti_dani@hotmail.com Key words: Gas turbine, automation, PLC, PLC SLAVE, monitoring Abstract: The technical evolution of the industrial and aeronautical groups involving gas turbines, determined by the request of increased efficiency and reliability, imposes the control through modern command and control automation systems.
Types of automatic control systems: 1.
Fig. 1.
The second one is dealing just with the jet engine safety by imposing proper functioning limits and in this way the control system has two smaller independent algorithms and a response time of about 0,1 sec.
D., University Politehnica of Bucharest, Faculty of Aerospace Engineering, 1-7 Polizu Street, 011061, Bucharest 1, Romania agabriel.dediu@gmail.com, bcrunti_dani@hotmail.com Key words: Gas turbine, automation, PLC, PLC SLAVE, monitoring Abstract: The technical evolution of the industrial and aeronautical groups involving gas turbines, determined by the request of increased efficiency and reliability, imposes the control through modern command and control automation systems.
Types of automatic control systems: 1.
Fig. 1.
The second one is dealing just with the jet engine safety by imposing proper functioning limits and in this way the control system has two smaller independent algorithms and a response time of about 0,1 sec.
Online since: November 2016
Authors: Yong Lai Chen, Jin Feng Li, Zi Qiao Zheng, Xu Hu Zhang
Their chemical composition are shown in Table 1.
Fig. 1 Tensile properties of 2A96 Al-Li alloy after T8-aging with different pre-deformation.
As 3% predeformation was applied, the aging response was greatly accelerated (Fig.1).
References [1] J.F.
Journal of Light Metals. 1(2001) 1−14
Fig. 1 Tensile properties of 2A96 Al-Li alloy after T8-aging with different pre-deformation.
As 3% predeformation was applied, the aging response was greatly accelerated (Fig.1).
References [1] J.F.
Journal of Light Metals. 1(2001) 1−14
Online since: August 2013
Authors: Feng Xia Han, Xiu Li Sang, Jian Xin Xu
Basing on the composition shown in table 1 and table 2, if input power enhanced 5.3 MWh, anthracite feeding into the furnace would add to 1 t.
The formed freeze lining was shown in fig. 1.
Therefore, 5495390.378 kJ means 1526.497 kW was used to smelt 1 t ilmenite.
Input power /MW Ilmenite charging rate /th-1 Requirement energy /MW Heat loss /MW IPR/kg ilmeniteMW-1 No.
References [1] S.L.
The formed freeze lining was shown in fig. 1.
Therefore, 5495390.378 kJ means 1526.497 kW was used to smelt 1 t ilmenite.
Input power /MW Ilmenite charging rate /th-1 Requirement energy /MW Heat loss /MW IPR/kg ilmeniteMW-1 No.
References [1] S.L.
Online since: September 2011
Authors: Rui Fang Yu, Mei Qiao Yuan, Yan Xiang Yu
Spatial Coherency Function of Seismic Ground Motion
Based on UPSAR Records
Ruifang Yu 1, a, Meiqiao Yuan 1,2,b and Yanxiang Yu 1,c
1 Institute of Geophysics, China Earthquake Administration, Beijing, P.R.
The separation distances among the stations are shown in Table 1.
Fig.1 shows the variation of the coherence function along with the separation distance at three given circular frequencies ().
References [1] J.L.
Hu: Earthquake Engineering and Engineering Vibration Vol. 1 (1981), p.1-8, in Chinese
The separation distances among the stations are shown in Table 1.
Fig.1 shows the variation of the coherence function along with the separation distance at three given circular frequencies ().
References [1] J.L.
Hu: Earthquake Engineering and Engineering Vibration Vol. 1 (1981), p.1-8, in Chinese
Online since: May 2021
Authors: Sook Keng Chang, Hong Ngee Lim, Laimy Mohd Fudzi, Zulkarnain Zainal, Suhaidi Shafie
Sonicated glass substrates were dip coated with the sol-gel precursor for
40 s followed by annealing at 350 oC for 1 h.
Fig. 1: X-ray diffractograms of ZnSe/ZnO/ITO at various deposition potential: -0.5 V, -0.7 V and -0.9 V.
Table 1: Band gap energy and current density of samples prepared.
References [1] O.O.
Soc. 153(1) (2006) G47-G52
Fig. 1: X-ray diffractograms of ZnSe/ZnO/ITO at various deposition potential: -0.5 V, -0.7 V and -0.9 V.
Table 1: Band gap energy and current density of samples prepared.
References [1] O.O.
Soc. 153(1) (2006) G47-G52
Online since: September 2012
Authors: Wolfgang Anwand, Gerhard Brauer, S. May Tal Beck, O. Hen, S. Haroush, A. Beck, A. Ocherashvili, Andreas Wagner, Y. Eisen, D. Moreno
It is a high-strength, non-magnetic and corrosion-resistant material [1].
The irradiation took place by 10 MeV protons with a total charge of 1 mAh (= 3.6 C).
In Table 1 the results of these fits are collected.
References [1] M.
Meth. 138 (1976) 479-487
The irradiation took place by 10 MeV protons with a total charge of 1 mAh (= 3.6 C).
In Table 1 the results of these fits are collected.
References [1] M.
Meth. 138 (1976) 479-487
Online since: February 2025
Authors: Muhardi Mustafa, Hendra Pachri, Adi Tonggiroh
Fig. 1.
Analysis Method 1.
Detection limit 1 mg kg-1 for As; 0.05 mg kg-1 for Cd; 5 mg kg-1 for Cr; 1 mg kg-1 for Cu, Mn, Ni, Pb, Zn.
Table 1.
References [1] Schulze DG., 2005.
Analysis Method 1.
Detection limit 1 mg kg-1 for As; 0.05 mg kg-1 for Cd; 5 mg kg-1 for Cr; 1 mg kg-1 for Cu, Mn, Ni, Pb, Zn.
Table 1.
References [1] Schulze DG., 2005.