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Online since: January 2009
Authors: Akshey Sehgal, Jeffrey Klatt, Hsin Hsiung Huang, Jamal Ramdani, Craig Printy, Scott Ruby, Todd Thibeault
Constructing Pourbaix and speciation diagrams, to reproduce the
conditions in the 5:1 BOE and 100:1 HF bath, was difficult because of the limited thermodynamic data on the Silicomolybdate species and had to be extracted from other publications; that effort will
be the focus of another publication [4].
This led to a 3x reduction in the HF dip time bringing the HF process time in line with other production recipes.
This led to a 3x reduction in the HF dip time bringing the HF process time in line with other production recipes.
Online since: January 2007
Authors: B.K. Singh, Ho Jin Ryu
The optimized values of temperature and duration of H2 (100 cc/min) treatment given
for catalyst formation (data not given here) were 600°C and 60 minutes, respectively, which
resulted in higher yield of CNFs using acetylene as carbon source and Co-Ni as catalyst over
MgO.
(A) XRD pattern of MgONi0.25Co0.25 after H2 reduction.
(A) XRD pattern of MgONi0.25Co0.25 after H2 reduction.
Online since: October 2007
Authors: Jing Zhang, Ru Lin Zuo, Fu Sheng Pan
This risks the weight reduction advantage of magnesium alloy.
Taking the diffusion of element Al as an example, since the interdiffusion coefficient D ~ for Mg-Al alloy can be estimated from the data provided by Moreau et al. [5] as ) /135 exp( 1039.3 ~ 2 4 TR molkJ s m D • − •×= − (1) where R is the gas constant, T is temperature in K, D ~ equals s m216 1046.5 − × at 325°C.
Taking the diffusion of element Al as an example, since the interdiffusion coefficient D ~ for Mg-Al alloy can be estimated from the data provided by Moreau et al. [5] as ) /135 exp( 1039.3 ~ 2 4 TR molkJ s m D • − •×= − (1) where R is the gas constant, T is temperature in K, D ~ equals s m216 1046.5 − × at 325°C.
Online since: August 2012
Authors: Sheng Xian Wei, Zhong Yu Zhang, Xiao Feng Zhou, Shu Fen Tao
Relatively close spacing may be considered, and it is significant to determine the shadow caused reduction in net solar radiation on the collector arrays.
Modelling daily topographic solar radiation without site-specific hourly radiation data.
Modelling daily topographic solar radiation without site-specific hourly radiation data.
Online since: January 2005
Authors: Lei Zheng, Q. Deng, Ting Dong Xu
The grain boundary segregation data were presented in terms of normalized
peak-to peak heights.5
Auger peak height ratio curve in Fig.1 shows that there is an appreciable increase in the
grain-boundary concentration of sulfur on the application of tensile stress 35 kg/mm
2
for the first 3
h and the concentration reaches its maximum Cb(σ=σ) when stress aging for 3 h .
In addition, Kluge concluded that the large reduction in C44 is a generic phenomenon in high-angle grain boundary simulations. 6 The experimentally determined grain-boundary elastic modulus Egb should actually be an apparent value which may be considered as being composed of the contributions of C11, C12, C13, C33, C66 and C44.
In addition, Kluge concluded that the large reduction in C44 is a generic phenomenon in high-angle grain boundary simulations. 6 The experimentally determined grain-boundary elastic modulus Egb should actually be an apparent value which may be considered as being composed of the contributions of C11, C12, C13, C33, C66 and C44.
Online since: September 2011
Authors: Anton Panda, Ján Duplák, Jozef Jurko, Marcel Behún
El-Hofy,” Machining Technology-Machine Tools and Operations,” CRC Press,pp.398, 2008, ISBN 978-1-4200-4339-6
[2] E.Isakov, ”Cutting Data for turning of steel,” Industrial Press,Inc. 989 Avenue of the Americas New York, NY 10018, pp.316, 2009, ISBN 978 – 0 – 8311- 3314-6
[3] J.Duplák,” Identification of comprehensive T-vc dependence “, Diploma Thesis, Prešov FVT, pp.106, 2010
[4] K.Vasilko, “Theory and practise of splinter machining,” Prešov FVT, pp. 546,2009, ISBN 978-80-553-0152-5
[5] M.Žitňanský-J.Zrník-M.Martinkovič, „Developing processes of property improvement of nickel base superalloys,“ In: Journal of Materials Processing Technology. - ISSN 0924-0136, No. 78 (1998), pp.204-209 (1998)
[6] P.Michalik, J.Zajac, “Intelligently programming of holes machining,“ In: Manufacturing Engineering, No.4, Vol.
Pandová, “Natural zeolite-clinoptilolite - raw material serviceable in the reduction of toxical components at combustion engines noxious gases,” Gospodarka surowcami mineralnymi, vol. 23, no. 4, 2007, p. 19-25.
Pandová, “Natural zeolite-clinoptilolite - raw material serviceable in the reduction of toxical components at combustion engines noxious gases,” Gospodarka surowcami mineralnymi, vol. 23, no. 4, 2007, p. 19-25.
Online since: March 2010
Authors: Yan Wang, Feng Gao
This causes a sudden reduction in the temperature allowing the circulating
dielectric fluid to implore the plasma channel and flush the molten material from the pole surfaces in
the form of microscopic debris.
The data on material properties required for the numerical calculations are collected after extensive search through information of literatures and handbooks.
The data on material properties required for the numerical calculations are collected after extensive search through information of literatures and handbooks.
Online since: March 2004
Authors: Jai Sung Lee, H.Y. Nam, S.K. Kwon, Young Soo Kang
Experimental
The �-Fe-Ni nanoalloy powder in the form of agglomerate consisting of 40 nm grain size was
fabricated by hydrogen reduction of Fe2O3-NiO powder at 600
o
C for 1h.
In order to check this factor, the shrinkage anisotropy, defined as a ratio of dimensional change in diameter and height, (�D/D0)/(� H/H0), was determined from the shrinkage data [6,7].
In order to check this factor, the shrinkage anisotropy, defined as a ratio of dimensional change in diameter and height, (�D/D0)/(� H/H0), was determined from the shrinkage data [6,7].
Online since: October 2013
Authors: Yi Lin Zhou, Yong Qing Jin, Tai Xiong Guo, Xue Qiang Dong
The results of tracing survey and statistical analysis from a large number of production data show that the distribution of bugle particle defect is closely related to sheet thickness.
Furthermore, the No.1 stand has the largest reduction and the most influence on surface cleanliness of cold rolled sheet.
Furthermore, the No.1 stand has the largest reduction and the most influence on surface cleanliness of cold rolled sheet.