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Online since: July 2011
Authors: Stéphane Mathieu, Michel Vilasi, Stephane Knittel
Introduction
High temperature applications require new categories of structural materials with high toughness and hot corrosion resistance in order to increase the operating temperatures.
Since the last ten years, niobium alloys are considered as a real potential material allowing the use of the refractory alloys in high temperature applications.
The alloying additions of the niobium solid solution decreases the solubility of tin (3.7 at.% ) in bcc niobium as compared to 6at% in pure Nb at 1200oC according to the Nb-Sn binary [[] C.Toffolon, C.Servant, J.C.Gachon and B.Sundam, Reassessment of the Nb-Sn system, Journal of phase equilibria, Vol.23 N°2, 134-139, 2002. ].
They would like also to thank the common service of microscopy and microanalyses (SCMEM) of the Faculty of Sciences and Techniques of Nancy (France) for its help for microscopic observations.
Since the last ten years, niobium alloys are considered as a real potential material allowing the use of the refractory alloys in high temperature applications.
The alloying additions of the niobium solid solution decreases the solubility of tin (3.7 at.% ) in bcc niobium as compared to 6at% in pure Nb at 1200oC according to the Nb-Sn binary [[] C.Toffolon, C.Servant, J.C.Gachon and B.Sundam, Reassessment of the Nb-Sn system, Journal of phase equilibria, Vol.23 N°2, 134-139, 2002. ].
They would like also to thank the common service of microscopy and microanalyses (SCMEM) of the Faculty of Sciences and Techniques of Nancy (France) for its help for microscopic observations.
Online since: August 2012
Authors: Cristina dos Santos Rocha Sandra, Boeira Braga Matheus
Deposition of the coating material on a solid surface generates an interface.
Materials and Methods Glass beads, with size range between 1.68 and 2 mm, were chosen as nucleus in the coating experiments, due to the high surface energy of the glass [7].
Donida and A.M.M Marques: The Canadian Journal of Chemical Engineering Vol. 87 (2009), p.695
Neumann: Advances in Colloid and Interface Science Vol.81 (1999), p.167.
Materials and Methods Glass beads, with size range between 1.68 and 2 mm, were chosen as nucleus in the coating experiments, due to the high surface energy of the glass [7].
Donida and A.M.M Marques: The Canadian Journal of Chemical Engineering Vol. 87 (2009), p.695
Neumann: Advances in Colloid and Interface Science Vol.81 (1999), p.167.
Online since: July 2014
Authors: Tong Lu Li, Ping Li, Xiao Kun Hou, Xian Li Xing
The northern Shaanxi is located in the center of the Ordos basin in the Mesozoic era, where deposited a set of thick clastic material of river-lake facies.
Malan loess is the first layer of typical loess on the top, which is a set of uniform loose material, light in color, corresponding to last glaciations.
At present, this type of landslide is in an extra-stable state, the main reason is that after a long time of erosion, the residual sliding deposits have left a little, even the most sliding bed are outcropped, therefore, there are no material for revival.
Acknowledgements This work was financially supported by the Natural Science Foundation of China (No.
Journal of engineering geology. 2007,15(4),500-505.
Malan loess is the first layer of typical loess on the top, which is a set of uniform loose material, light in color, corresponding to last glaciations.
At present, this type of landslide is in an extra-stable state, the main reason is that after a long time of erosion, the residual sliding deposits have left a little, even the most sliding bed are outcropped, therefore, there are no material for revival.
Acknowledgements This work was financially supported by the Natural Science Foundation of China (No.
Journal of engineering geology. 2007,15(4),500-505.
Online since: February 2007
Authors: K.C. Hsieh, Kuen Tsan Chen, W.F. Wu, Y.L. Lu, Kung Ting
The material from riser to ring
header were replaced by 316NG.
The category A with 316 stainless steel material is only 2.63%.
The other 10 segments with non safety significant welds are risers of loop A and B that the pipe materials are IGSCC resistant 316 stainless steels.
Acknowledgement The financial support given by the National Science Council of Taiwan is gratefully acknowledged.
[16] Yao J.C., The applications of probabilistic risk assessments in Taiwan nuclear power plant (in Chinese), Journal of TAIPOWER Nuclear Energy, (1998)
The category A with 316 stainless steel material is only 2.63%.
The other 10 segments with non safety significant welds are risers of loop A and B that the pipe materials are IGSCC resistant 316 stainless steels.
Acknowledgement The financial support given by the National Science Council of Taiwan is gratefully acknowledged.
[16] Yao J.C., The applications of probabilistic risk assessments in Taiwan nuclear power plant (in Chinese), Journal of TAIPOWER Nuclear Energy, (1998)
Online since: December 2014
Authors: Da Zhi Gu, Jin Zhang
However, special attention should be paid to security of structures and materials of featured landscapes while expressing innovation.
As shown in figure 12, the outdoor sculpture made from old mining production machine materials in Deutsches Bergbau-Museum Bochum has added interest to space while leading people to review the vigorous mining industry.
Therefore, security is reflected in many details of landscape design, including steadiness of structures of building entities, whether plants near roads are thorny and easy to hurt people or not, whether the depth of water lies within the safe value or not, whether appropriate materials have been used in paved facilities and featured landscapes on the square or not, whether there is a separation of vehicles and people on roads or not, whether the roads are anti-skid or not, and whether the scope of lighting is in the estimated scope or not, etc
[2] Dequn Zhou, Ruyin Long:Issue of Sustainable Development of China’s Mining Cities and Way Out (a fund program: a program funded by Natural Science Foundation of China),Journal of China University of Mining & Technology(Social Science), 3(2001) .
As shown in figure 12, the outdoor sculpture made from old mining production machine materials in Deutsches Bergbau-Museum Bochum has added interest to space while leading people to review the vigorous mining industry.
Therefore, security is reflected in many details of landscape design, including steadiness of structures of building entities, whether plants near roads are thorny and easy to hurt people or not, whether the depth of water lies within the safe value or not, whether appropriate materials have been used in paved facilities and featured landscapes on the square or not, whether there is a separation of vehicles and people on roads or not, whether the roads are anti-skid or not, and whether the scope of lighting is in the estimated scope or not, etc
[2] Dequn Zhou, Ruyin Long:Issue of Sustainable Development of China’s Mining Cities and Way Out (a fund program: a program funded by Natural Science Foundation of China),Journal of China University of Mining & Technology(Social Science), 3(2001) .
Online since: February 2013
Authors: Ru Xiong, Ying Jie Qiao, Gui Liang Liu
Stress Corrosion Cracking (SCC) of Nickel-base Weld Metals in PWR Primary Water
Ru Xiong1,2,a, Yingjie Qiao1,b and Guiliang Liu2,c
1 School of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China.
2 National Key Laboratory of Reactor Fuel and Materials, Nuclear Power Institute of China, Chengdu, 610041, China.
These materials began to exhibit extensive PWSCC at increasing rates in the early 1970s.
Subsequently, PWSCC was observed in more experiments; these early tests were conducted with wrought materials.
Subsequently, the SCC of Alloy 600 welding materials (e.g.
Wrought materials have generally equiaxed shapes of grains.
These materials began to exhibit extensive PWSCC at increasing rates in the early 1970s.
Subsequently, PWSCC was observed in more experiments; these early tests were conducted with wrought materials.
Subsequently, the SCC of Alloy 600 welding materials (e.g.
Wrought materials have generally equiaxed shapes of grains.
Online since: August 2016
Authors: Dana Stančeková, Marek Sadilek, Jana Petru, Tomáš Zlámal, Miroslav Janota, Dušan Steklac, Marek Kordik
Compacted materials on the surface were detected via the analysis of deformed rings.
The measurement was performed by the diffractometer PHILIPS PW 1710 at Faculty of Materials Science and Technology in Trnava.
Even conditions of materials after soft annealing affects total conditions of tautness.
Grozav, Experimental device for practicing routines of machine tool precision measurement, Academic Journal of Manufacturing Engineering. 13, (2015), pp.39-44 [10] J.
Derbas, Investigation Of Defects In Forging Tools By Nondestructive Detection Method, Metal, 22nd International Conference On Metallurgy And Materials. (2013), pp. 485-490 [14] A.
The measurement was performed by the diffractometer PHILIPS PW 1710 at Faculty of Materials Science and Technology in Trnava.
Even conditions of materials after soft annealing affects total conditions of tautness.
Grozav, Experimental device for practicing routines of machine tool precision measurement, Academic Journal of Manufacturing Engineering. 13, (2015), pp.39-44 [10] J.
Derbas, Investigation Of Defects In Forging Tools By Nondestructive Detection Method, Metal, 22nd International Conference On Metallurgy And Materials. (2013), pp. 485-490 [14] A.
Online since: October 2012
Authors: Guo Zhen Zhang, Qian Wang, Fu Ping Wu
It is to strengthen design of tunnel water ecological implementation, including the optimization design of tunnel lining structure, lining the choice of waterproof materials, ecological environment protection under conditions of controlled drainage design.
In the drain near the tunnel entrance or in the pH value adjusting groove is provided with oil absorbing material to absorb oil of the construction waste water.
Chinese Journal of rock mechanics and engineering, Vol. 24(1) (2005), p. 121-127.
Environmental science and management, Vol. 35(7) (2010), p. 188-194.
In the drain near the tunnel entrance or in the pH value adjusting groove is provided with oil absorbing material to absorb oil of the construction waste water.
Chinese Journal of rock mechanics and engineering, Vol. 24(1) (2005), p. 121-127.
Environmental science and management, Vol. 35(7) (2010), p. 188-194.
Online since: December 2012
Authors: Fu Ming Zhang
Main reason for this is that chloride exists in BF raw material and fuel.
In order to suppress abnormal corrosion of the gas pipeline system, analysis and study on corrosion mechanism of bellow compensator of gas pipeline is carried out to improve material and structure of stainless steel bellow compensator.
Material of bellow compensator is improved to stainless steel Incoloy825, which can prevent corrosion due to chloride ion, instead of austenite stainless steel 316L (00Cr17Ni14Mo2); polyethylene resin anti-corrosion paint is sprayed at the inner wall of the gas pipeline to separate metal pipeline and acid corrosion medium in order to suppress abnormal corrosion.
Acknowledgments This work was financially supported by the “11th Five Stage” National Science and Technology Support Plan Foundation (2006BAE03A10).
Journal of Iron and Steel Research International, Vol. 16 (2009), n.
In order to suppress abnormal corrosion of the gas pipeline system, analysis and study on corrosion mechanism of bellow compensator of gas pipeline is carried out to improve material and structure of stainless steel bellow compensator.
Material of bellow compensator is improved to stainless steel Incoloy825, which can prevent corrosion due to chloride ion, instead of austenite stainless steel 316L (00Cr17Ni14Mo2); polyethylene resin anti-corrosion paint is sprayed at the inner wall of the gas pipeline to separate metal pipeline and acid corrosion medium in order to suppress abnormal corrosion.
Acknowledgments This work was financially supported by the “11th Five Stage” National Science and Technology Support Plan Foundation (2006BAE03A10).
Journal of Iron and Steel Research International, Vol. 16 (2009), n.