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Online since: March 2016
Authors: Sergey Kozyukhin, Petr Lazarenko, Alexey Babich, Sergey Timoshenkov, Dmitry Gromov, Alexey Yakubov, Dmitry Terekhov, Alexey Sherchenkov
Table 1.
a b c d Fig. 1.
References [1] M.
Proc. of SPIE 9440 (2014) 944006-1
Res. & Dev. 52 (2008) 465-479
a b c d Fig. 1.
References [1] M.
Proc. of SPIE 9440 (2014) 944006-1
Res. & Dev. 52 (2008) 465-479
Online since: January 2010
Authors: Shi Bo Guo, Jian Guang Xu, Jian Hui Yan, Da Gong Zhang
Especially the room-temperature fracture toughness of the composite is from
4.21MPa·m
1/2 for MoSi2 to 7.25MPa·m
1/2 for composite, increased by 72.2%, respectively.
Fig.1 showed the XRD pattern of as-synthesized powder.
References [1] R.
A Vol. 479 (2008), p.23
Vol. 280-283 (2005), p.1467 10 20 30 40 50 60 70 80 Mo5Si35 5 5 4 Mo 4 4 4 Si3 333 3 Si3N42 2222222 2 222 2 MoSi21 11 1 11 1 1 1 1 1 1 Intensity 2 Theta (o) Fig.1 XRD pattern of as-synthesized powder Fig.2 SEM micrograph of as-synthesized powder 0 10 20 30 40 50 60 0 200 400 600 800 1000 1200 1400 1600 1800 Temperature (o C) Time (s) Fig.3 Temperature profile of combustion synthesis of Si3N4/MoSi2 composite powder Fig.4 SEM of SEM micrograph of the fractured surface of Si3N4/MoSi2 composite Table 1 Mechanical properties of sintered products Materials Relative density (%) Vicker's hardness (GPa) Flexural strength (MPa) Fracture toughness (MPa·m 1/2) MoSi2 92.2 8.84 175.3 4.21 Si3N4/MoSi2 89.6 11.06 261.1 7.25
Fig.1 showed the XRD pattern of as-synthesized powder.
References [1] R.
A Vol. 479 (2008), p.23
Vol. 280-283 (2005), p.1467 10 20 30 40 50 60 70 80 Mo5Si35 5 5 4 Mo 4 4 4 Si3 333 3 Si3N42 2222222 2 222 2 MoSi21 11 1 11 1 1 1 1 1 1 Intensity 2 Theta (o) Fig.1 XRD pattern of as-synthesized powder Fig.2 SEM micrograph of as-synthesized powder 0 10 20 30 40 50 60 0 200 400 600 800 1000 1200 1400 1600 1800 Temperature (o C) Time (s) Fig.3 Temperature profile of combustion synthesis of Si3N4/MoSi2 composite powder Fig.4 SEM of SEM micrograph of the fractured surface of Si3N4/MoSi2 composite Table 1 Mechanical properties of sintered products Materials Relative density (%) Vicker's hardness (GPa) Flexural strength (MPa) Fracture toughness (MPa·m 1/2) MoSi2 92.2 8.84 175.3 4.21 Si3N4/MoSi2 89.6 11.06 261.1 7.25
Online since: November 2014
Authors: Chang Ming Cheng, Hai Long Zhu, Hong Hui Tong, Fa Zhan Yang, Qin Wang
References
[1] Cochran J K.
Sci., 1998, 5(3):474–479
Powder Technol., 2003, 132(1):211–215
China, 2006, 16(1): 13–17
Technol., 2010, 210(1): 81–84
Sci., 1998, 5(3):474–479
Powder Technol., 2003, 132(1):211–215
China, 2006, 16(1): 13–17
Technol., 2010, 210(1): 81–84
Online since: August 2013
Authors: S.V. Eliseyev, A.I. Artyunin
The scheme of experimental unit shown in Fig. 1 represents the massive rotor 1 mounted in the housing 2 on the elastic supports 3.
Calibrating was carried out by means of the loading device and the dynamometer (they are not shown in Fig. 1).
During the calculation, the following parameters of the rotor and pendular balancers of the experimental stand were accepted: Ω=460 rad/sec; ε = 230 pаd/c2 rad/sec; e = 25*10-1 m2; δ = γ = 0; m = 5*10-2 kg; L1 = L2 = = 0,8 m; а1 = а4 = 0,28 m; а2 = а3 = 0,25 m; а = 0,265 m; b1 = 843,17 N۟·sec/m; b2 == –0,47N۟·sec; b3 = 10,41N·m·sec; М = 37 kg; A = 0,479 kg·m2; С = 0,093 kg·m2; L1 = 0,165 m; L2 = 0,155 m; k1 = 0,604 ·106N/m; k2 = 0,555 ·106N/m.
References [1] K.V.
No. 1. pp. 15-19 [7] A.E.
Calibrating was carried out by means of the loading device and the dynamometer (they are not shown in Fig. 1).
During the calculation, the following parameters of the rotor and pendular balancers of the experimental stand were accepted: Ω=460 rad/sec; ε = 230 pаd/c2 rad/sec; e = 25*10-1 m2; δ = γ = 0; m = 5*10-2 kg; L1 = L2 = = 0,8 m; а1 = а4 = 0,28 m; а2 = а3 = 0,25 m; а = 0,265 m; b1 = 843,17 N۟·sec/m; b2 == –0,47N۟·sec; b3 = 10,41N·m·sec; М = 37 kg; A = 0,479 kg·m2; С = 0,093 kg·m2; L1 = 0,165 m; L2 = 0,155 m; k1 = 0,604 ·106N/m; k2 = 0,555 ·106N/m.
References [1] K.V.
No. 1. pp. 15-19 [7] A.E.
Online since: January 2013
Authors: Hong Kyu Kwon, Kwang Kyu Seo
The solution achieved in such a way lacks scientific calculation and analysis [1, 2].
The velocity and length of fast shot sleeve were 1.6m/s and 675m, respectively.
Figure 2: Meshed data with Z-Cast: (A) Case 1; (B) Case 2 Biscuit Runner Gate Casting Overflow a b The size and volume of the part on figure 2 were 655*479*154mm and 1,304,575mm3, respectively.
The model 1 on figure 2 has principal and branch gates.
The velocity and length of fast shot sleeve were 1.6m/s and 675m, respectively.
The velocity and length of fast shot sleeve were 1.6m/s and 675m, respectively.
Figure 2: Meshed data with Z-Cast: (A) Case 1; (B) Case 2 Biscuit Runner Gate Casting Overflow a b The size and volume of the part on figure 2 were 655*479*154mm and 1,304,575mm3, respectively.
The model 1 on figure 2 has principal and branch gates.
The velocity and length of fast shot sleeve were 1.6m/s and 675m, respectively.
Online since: December 2012
Authors: Jin Ming Chang, Li Na Zhang
The grid voltage angular frequency is represented by ω0, which is shown in Fig.1.
Uab={Uab(1), Uab(2) , Uab(3) ,..., Uab(q)}, Ubc={Ubc(1), Ubc(2) , Ubc(3) ,..., Ubc(q)}, θT={θT(1), θT (2) , θT (3) ,..., θT (q)}.
The initial values are random number less than 1, and parameters data continue to be adjusted during process.
References [1] Gao Zhigang, Zhang Lei, Fu Xunbo, et al.
D.S., Jain, R.C., A robust back-propagation training algorithm for function approximation [J], IEEE Transactions on Neutral Networks, 1994, 5(3): 467-479.
Uab={Uab(1), Uab(2) , Uab(3) ,..., Uab(q)}, Ubc={Ubc(1), Ubc(2) , Ubc(3) ,..., Ubc(q)}, θT={θT(1), θT (2) , θT (3) ,..., θT (q)}.
The initial values are random number less than 1, and parameters data continue to be adjusted during process.
References [1] Gao Zhigang, Zhang Lei, Fu Xunbo, et al.
D.S., Jain, R.C., A robust back-propagation training algorithm for function approximation [J], IEEE Transactions on Neutral Networks, 1994, 5(3): 467-479.
Online since: September 2010
Authors: Li Bo Zhou, J. Shimizu, Y.B. Tian, Y. Tashiro, H. Takahashi, Y. Mikami, H. Iwase, S. Kamiya
Shimizu
1, a, L.
Zhou 1, c, Y.
References [1] L.
Abrasive Tech., Vol. 1 (2007), p94 [4] D.
A, Vol. 479 (2008), p373 [8] H.
Zhou 1, c, Y.
References [1] L.
Abrasive Tech., Vol. 1 (2007), p94 [4] D.
A, Vol. 479 (2008), p373 [8] H.
Online since: February 2011
Authors: M. Valizadeh, A. Eyvazzadeh, M. Rezaei
Fig 1.
XRD patterns of Cloisite 30B, rigid nanocomposite PUFs with 1 and 3 wt% Cloisite 30B.
Furthermore addition of 1 wt% Cloisite 30B leads to the improved mechanical properties.
References [1] M.
Eng. 479 (2008), p. 213 [5] S.
XRD patterns of Cloisite 30B, rigid nanocomposite PUFs with 1 and 3 wt% Cloisite 30B.
Furthermore addition of 1 wt% Cloisite 30B leads to the improved mechanical properties.
References [1] M.
Eng. 479 (2008), p. 213 [5] S.
Online since: May 2005
Authors: J. Valentin, M.A. Weber, R. Brodmann, A. Sharp
Valentin
1,a, M.
Brodmann 1,c and A.
Fig.1.
A Taylor series expansion of Eq.1 near z½ leads to )cos(1 443.0 α λ − ≈FWHM
Table 1.
Brodmann 1,c and A.
Fig.1.
A Taylor series expansion of Eq.1 near z½ leads to )cos(1 443.0 α λ − ≈FWHM
Table 1.
Online since: December 2018
Authors: Xu Jun Mi, Yang Yu, Xiang Qian Yin, Zhen Yang, Xue Feng, Hao Feng Xie, Li Jun Peng, Guo Jie Huang
The orientation relationship between bcc Cr precipitates and the matrix change from cube-on-cube to NW-OR.
1 Introduction
Age-hardening Cu-Cr system alloys can be widely uesed in many fileds such as electrodes for spot welding [1-4], intergrated circuit lead frame [1-3, 5-12]and railway contact wire[2-9], because it has high strength, good electrical and thermal conductivity.
The drawed bars solutioned at 1000 ℃ × 1 h and then quickly quenched.
Many fine particles with an average size of 1-2 nm distribute homogeneously in the copper matrix from the Fig.1(a).
From the Fig.1(a) and Fig.2(a), the size of these precipitates is litter larger than that of precipitates.
Comp. 479 (2009) 303-306
The drawed bars solutioned at 1000 ℃ × 1 h and then quickly quenched.
Many fine particles with an average size of 1-2 nm distribute homogeneously in the copper matrix from the Fig.1(a).
From the Fig.1(a) and Fig.2(a), the size of these precipitates is litter larger than that of precipitates.
Comp. 479 (2009) 303-306