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Online since: October 2007
Authors: L.J. Geerligs, Stephan Riepe, Gianluca Coletti, P. Manshanden, C. Swanson, Wilhelm Warta, J. Arumughan, R. Kopecek
It has to be taken into account that the crystal structure and the temperature history are
not necessarily comparable to industrial Directionally Solidified (DS) multicrystalline silicon (mcSi).
Swanson et al., Measurement of ultra-trace level metallic impurities in silicon wafers utilizing neutron activation analysis, J. of Radioanalytical and Nuclear Chemistry, V 248, N1, 6974, (2001) [9] W.C.
Swanson et al., Measurement of ultra-trace level metallic impurities in silicon wafers utilizing neutron activation analysis, J. of Radioanalytical and Nuclear Chemistry, V 248, N1, 6974, (2001) [9] W.C.
Online since: October 2014
Authors: Dan Lu Liu, Ren Gui Xiao, Teng Zou, Jian Zhong Wang, Jian Xin Cao, Dao Yun Xu
SEM images of the tunnels morphology were characterized by use of TiO2 replicas that copied the tunnels’ structure.
[6]Hou Zhaohui,Zeng Jianhuang,Chen Jianjun,Liao Shijun,Ultrasonic-assisted ac etching of aluminum foils for electrolytic capacitor electrodes with enhanced capacitance.Materials Chemistry and Physics,123(2010), 625-628
[6]Hou Zhaohui,Zeng Jianhuang,Chen Jianjun,Liao Shijun,Ultrasonic-assisted ac etching of aluminum foils for electrolytic capacitor electrodes with enhanced capacitance.Materials Chemistry and Physics,123(2010), 625-628
Online since: May 2014
Authors: Jacques Lacaze, Alain Hazotte, Nathalie Siredey-Schwaller, Thierry Mazet, Cécile Bernardi
The resulting chemistry variation could explain the presence of Mn in the particles present at 568°C, as seen in Table 3.
Below 564°C, the evolution of the microstructure is well described by Thermo-Calc, while at higher temperatures diffusion of Si and vaporization of Mg take place, strongly modifying the material structure.
Below 564°C, the evolution of the microstructure is well described by Thermo-Calc, while at higher temperatures diffusion of Si and vaporization of Mg take place, strongly modifying the material structure.
Online since: August 2012
Authors: Ana Cristina Figueiredo de Melo Costa, Elvia Leal, R.L.P. Santos, A.T.C. Silva
Among the various fuels that can be used in the combustion reaction, glycine (NH2CH2COOH) has excelled in the synthesis of different products because it is a low-cost amino acid, it is a complexing agent that is able to bind to metal ions, it has in its structure a carboxylic acid group and an amino group [14], has a high flexibility degree when integrated into a polypeptide chain [15], it has a so short chain avoiding hydrophobic interactions, and also, when associated with some enzymes can be converted into radical, becoming an important product for the enzyme catalysis [16].
Structural Inorganic Chemistry.
Structural Inorganic Chemistry.
Online since: January 2021
Authors: Seetharaman Sivaprasad, Swapna Dey, Indranil Chattoraj, Nityananda Das
A part of the hydrogen exists as a solute in the normal positions of the lattice structure of the material, while a part of it resides at “hydrogen traps” which have a high affinity for hydrogen.
The chemistry of this steel is as follows: C 0.06, Mn 1.26, Si 0.30, Cr 0.15, Ni 0.01, P 0.008, S 0.004, Nb 0.05, Ti 0.01, Mo 0.06, V 0.007 (all in wt%).
The chemistry of this steel is as follows: C 0.06, Mn 1.26, Si 0.30, Cr 0.15, Ni 0.01, P 0.008, S 0.004, Nb 0.05, Ti 0.01, Mo 0.06, V 0.007 (all in wt%).
Online since: April 2012
Authors: Yao Nan Cheng, Xian Li Liu, Fu Gang Yan, Zhen Jia Li, Xian Zhou Wang
Introduction
The 3Cr-1Mo-1/4V steel is the material of the canister of the heat-wall-hydrogen-reactor, the main part of the heavy chemistry equipment.
They have a strong affinity, and the Co and Fe crystals have the same micro-crystal lattice structure especially in the more than 518 ℃.
They have a strong affinity, and the Co and Fe crystals have the same micro-crystal lattice structure especially in the more than 518 ℃.
Online since: January 2006
Authors: Jean Bernardini, Christophe Girardeaux, Andree Rolland
Tracer/matrix t (s) Dv (m
2/s) (Dvt)1/2
(m) P (m
3/s)
59
Fe / Copper-0.091 at% iron 345600 2.9 10-20 10-7 2.3
10-22
59
Fe / Copper 345600 2.9 10-20 10-7 5.9
10-22
*
59
Fe-65 Zn / Copper 342420 2.9 10-20 9.97 10-8 4.2 10-22
**65 Zn -
59
Fe / Copper 342420 6.54 10
-19 4.6 10-7 1.8 10-21
(*diffusivity of iron measured during co-diffusion with Zn ;** diffusivity of Zn during co-diffusion
with Fe)
Fig. 3 Co-diffusion of Fe (▲) and Zn (■) in Cu Fig. 4 Fe diffusion profiles in Cu (▲)
and Cu-Fe solid solution (■)
Conclusion
It is shown in the present paper that grain-boundary diffusion remains one of the best ways to obtain
information on grain-boundary chemistry of non brittle systems.
Peraillon: Grain Boundary Structure and Kinetics (Metals Park, Ohio, American Society for Metals 1980), p. 239 [8] B.S.
Peraillon: Grain Boundary Structure and Kinetics (Metals Park, Ohio, American Society for Metals 1980), p. 239 [8] B.S.
Online since: March 2017
Authors: Lober Hermany, Rafael José Klein, Flavia Schwarz Franceschini Zinani, Luiz Alberto Oliveira Rocha, Liércio André Isoldi, Elizaldo Domingues dos Santos
Industrial and Engineering Chemistry Research, v. 49, p. 6649-6661, 2010
[13] Bejan, A., Shape and Structure, from Engineering to Nature.
[13] Bejan, A., Shape and Structure, from Engineering to Nature.
Online since: November 2011
Authors: Jin Liang Wang, Li Wei Liang, Yan Xin Wu
The research of influence factors on the slag melting temperature is significant to form a freeze slag inside reaction shaft, with compact structure, good heat insulation, certain intensity, appropriate thickness and reasonable distribution, to extend furnace life, to reduce energy consumption, and to promote production safety.
Liu: Copper metallurgical physical chemistry (Shanghai Science and Technology Press, China 1990), p.70.
Liu: Copper metallurgical physical chemistry (Shanghai Science and Technology Press, China 1990), p.70.