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Online since: November 2016
Authors: Nelcy D.S. Mohallem, Juliana B. da Silva, Cristiana P. Rezende
The variation of particle size and specific surface area (SSA) values is shown in Table 1 and 2.
ZnO obtained by Zn(NO3)2 and NH4OH ZnO obtained by Zn(CH3COO)2 and NH4OH Calcination temperature (ºC) SSA (m2.g-1) Particle size (nm) Calcination temperature (ºC) SSA (m2.g-1) Particle size (nm) Dried in oven Dried in oven 400 6 150 400 4 30 800 1 100-500 800 2 150 Freeze-dried Freeze-dried 400 3 150 400 20 40 800 2 150-500 800 10 200 Figure 1 shows images obtained by SEM of powders precipitated with Na2CO3, dried in oven and freeze-dried, both calcined at 800° C.
References [1] T.K.
Wei: Nanotechnology Vol. 18 (1) (2007), p. 6 [8] C.C.
Vol. 479 (2009), p.
Online since: July 2014
Authors: S. Kumaran, Kondaiah Gudimetla, K. Chandra Sekhar, Balasubramanian Ravisankar, B. Chaithanyakrushna
The elemental powders are loaded in HSS vial with 10:1 ball to powder ratio at 250 RPM.
The position of the processed sample with ECAP die is shown in Fig.1.
References [1] M.
Akhlaghi, J Alloys Compd 479 (2009) 334
Suryanarayana, Prog Mater Sci 46 (2001) 1
Online since: June 2014
Authors: Long Chang Hsieh, Tzu Hsia Chen, Hsiu Chen Tang
Table 1 shows its corresponding gear data.
Table 1.
Example 1.
Tsai, Proc. 9th Applied Mechanisms Conf., Kansas City, Missouri, Vol. 1 (1985) pp.1-5
Tang, Journal of Applied Mechanics and Materials, Vols. 479~480 (2014), pp. 309-313.
Online since: August 2014
Authors: M. Mariatti, Abdul Rahman Mohamed, Zulkifli Mohamad Ariff, Z. A. Ghaleb
This can attribute to the two dimensional GNP are more easier to aggregate than MWCNTs. 1.
As present in Table 1, the addition of GNP resulted in a decrease in both tensile strength and tensile modulus.
Fig. 3(c) shows the tensile fracture surface for 1 vol% MWCNTs/epoxy sonicated for 20 min.
Fig. 3: SEM images on tensile fracture surface of 1 vol% of GNP or MWCNTs/epoxy (at magnification of 1000 kx) 4.
References [1] A.
Online since: July 2016
Authors: Jia Lin Sun, Wen Dong Xue, Ruo Meng Xu, Jia Xin An, Feng Rui Zhai
Fig. 1 XRD spectrum of composite ceramics sintered at different pressures Experimental h-BN and α-Si3N4 powders were mixed with the mass ratio of 1:1 with 2wt% Al2O3 and 3wt% Y2O3 sintering aids through wet ball-milling with zirconium oxide ball and anhydrous ethanol for 24h.
Results and Discussion Fig. 1 shows the XRD spectrum of composite ceramics sintered at different pressures.
References [1] X.D.
Rare Metal Materials and Engineering, 2009(S2): 479-482
The main obstacle to the densification of BN-based composite ceramics, Advanced Ceramics, 1998, (1):7-10.
Online since: August 2012
Authors: Dao Jing Wang, Xing Hua Liu, Fu Shui Liu
The engine specifications are listed in Table 1.
When the equivalence ratio is more than 1 due to EGR, the temperature of exhaust decreased because of unburned hydrogen.
(2) The effect of hot EGR on is not significant at high load conditions; the changing range is less than 1%
References [1] Sun Da-wei, Liu Fu-shui, Sun Bai-gang, etc.
Int.J.Hydrogen energy, 2002,27:479~487
Online since: August 2012
Authors: Jun Li, Zhan Hua Ma, Ning Ning Wang
The reaction mixture consisting of H2 (70 ml•{TTP}8226 min−{TTP}8722 1) and C3H8 (53 ml•{TTP}8226 min−{TTP}8722 1) was fed into the reactor at 853 K.
The results are shown in figure 1.
Fig. 1, Catalytic performance of catalysts B.
References [1] K.
Wang, Propane Dehydrogenation Over PtSn Catalysts Supported on ZnO-Modified MgAl2O4, Catal Lett. 132 (2009) 472-479
Online since: May 2010
Authors: Igor A. Khrebtov, Valeriy G. Malyarov, Vladimir Y. Zerov, Anton D. Nikolenko, Valeriy F. Pindyurin, Aleksandr A. Legkodymov, Vladimir V. Lyah
Malyarov 1, Vladimir Yu.
Zerov 1, Anton D.
Lyah 2 1 S.I.
Fig. 1.
V. 74 (2007), No. 7, р. 479.
Online since: July 2007
Authors: Yong Ning Liu, Jie Wu Zhu, Zhan Ling Zhang, G. Yu
The final chemical composition (in wt.%) of the steel was: 1.58C, 1.54Cr, 1.66Al, 0.49Si, 0.44Mn, and the balance Fe.
Fig. 1.
Fig. 1(c) shows the microstructure of UHCS-1.6C after testing at 800°C and at a strain rate of 10-4s-1.
References [1] O.D.
Forum Vol. 475-479 (2005), p. 0255
Online since: June 2010
Authors: Cheng Jia Shang, Cheng Liang Miao, Guo Dong Zhang
Compressive deformation behaviors of low carbon steels with different Nb contents were investigated in the temperature range 900 o C to 1100o C and strain rates from 0.05s-1 to 2s-1 by single pass deformation.
Figure 1(b) illustrates the schedule of simulated multi-pass rolling.
Conclusions 1.
References [1] C.
Vol.475-479 (2005), p:141 [11] G.
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