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Online since: September 2020
Authors: Jamaluddin Abdullah, Hafizah Hanim Mohd Zaki, Norshahida Sariffudin, Farah Diana Mohd Daud, Nur Azemuzahir Mohd Sobri
Recently, the commercial products of NiTi alloys have been dominated largely by medical related products due to its good biocompatibility [1], high corrosion resistance, and lower apparent elastic modulus apart from its unique behaviour of pseudoelasticity and shape memory effect.
While most current application of NiTi is made of conventional alloys in solid forms such as wires, plates and thin wall tubes, keen interest have been given to novel physical forms i.e porous, thin film and functional gradient of NiTi.
The formidable challenge of obtaining single phase NiTi from elemental powders via solid state is the formation of other intermetallic compounds such as Ti2Ni and TiNi3 which may deterioriate the shape memory behavior of NiTi [7].
Therefore, this paper aims to investigate the use of MgH2 in combination with CaH2 as in-situ reducing agent to provide a non oxidizing environment in order to produce single phase NiTi.
Abdullah, The role of CaH2 in preventing oxidation for the production of single-phase NiTi alloy in solid state, Journal of Alloys and Compounds. 655, 364-371, 2016.
While most current application of NiTi is made of conventional alloys in solid forms such as wires, plates and thin wall tubes, keen interest have been given to novel physical forms i.e porous, thin film and functional gradient of NiTi.
The formidable challenge of obtaining single phase NiTi from elemental powders via solid state is the formation of other intermetallic compounds such as Ti2Ni and TiNi3 which may deterioriate the shape memory behavior of NiTi [7].
Therefore, this paper aims to investigate the use of MgH2 in combination with CaH2 as in-situ reducing agent to provide a non oxidizing environment in order to produce single phase NiTi.
Abdullah, The role of CaH2 in preventing oxidation for the production of single-phase NiTi alloy in solid state, Journal of Alloys and Compounds. 655, 364-371, 2016.
Online since: June 2012
Authors: Qing Ming Chang, Min Zhang, Chang Jun Chen
So in this study the aim is to manufacture steel/Al-foam core/steel sandwich panels by rolling of two steel-face sheet and Al-Si powders.
SEM and EDS of the compound interface are investigated.
It was concluded that a metallurgy bonding interface was formed by diffusion reaction and a brittle compound generated.
And FeAl3 was a kind of brittle compound, so when tearing the steel sheet it was just ripping out from the FeAl3 layer.
Kuribayashi: Scripta Materialia Vol. 50 (2004),p. 495 [4] Sun Yong, Shi Qingnan, Zhang Shuhong: Journal of Materials Processing Technology Vol. 63 (1997),p.438 [5] Zhang Shuhong, Sun Yong, Zhang Daiming: Journal of Materials Processing Technology Vol. 63 (1997),p.370 [6] Shi Qingnan, Zhang Shuhong, Sun Yong: Journal of .Materials Processing Technology Vol. 63 (1997),p.421
SEM and EDS of the compound interface are investigated.
It was concluded that a metallurgy bonding interface was formed by diffusion reaction and a brittle compound generated.
And FeAl3 was a kind of brittle compound, so when tearing the steel sheet it was just ripping out from the FeAl3 layer.
Kuribayashi: Scripta Materialia Vol. 50 (2004),p. 495 [4] Sun Yong, Shi Qingnan, Zhang Shuhong: Journal of Materials Processing Technology Vol. 63 (1997),p.438 [5] Zhang Shuhong, Sun Yong, Zhang Daiming: Journal of Materials Processing Technology Vol. 63 (1997),p.370 [6] Shi Qingnan, Zhang Shuhong, Sun Yong: Journal of .Materials Processing Technology Vol. 63 (1997),p.421
Online since: July 2015
Authors: Mario Rosso, Federico Simone Gobber, Ildiko Peter
Tungsten carbide imparts the alloys the necessary strength and wear resistance, whereas cobalt contributes to the toughness and ductility of the alloys.
Special alloys, like nickel based alloys and titanium based alloys are difficult to machine especially due to the inherent characteristic of retaining good mechanical properties at high temperatures.
Coatings based on Ti containing compounds are used because they have greater resistance to wear and good cutting properties at high speed.
Ezugwu, An overview of the machinability of aeroengine alloys, Journal of Materials Processing Technology,134 (2003), pp.233-253
Choudhury, Machinability of Nickel - base super alloys: a general review, Journal of Materials Processing and Technology,77, (1998), pp.278-284
Special alloys, like nickel based alloys and titanium based alloys are difficult to machine especially due to the inherent characteristic of retaining good mechanical properties at high temperatures.
Coatings based on Ti containing compounds are used because they have greater resistance to wear and good cutting properties at high speed.
Ezugwu, An overview of the machinability of aeroengine alloys, Journal of Materials Processing Technology,134 (2003), pp.233-253
Choudhury, Machinability of Nickel - base super alloys: a general review, Journal of Materials Processing and Technology,77, (1998), pp.278-284
Online since: February 2018
Authors: Pi Zhi Zhao, Zhen Shan Liu, Chong Gao, Jian Xin Wu, Rui Yin Huang
The principal aim of this work is to implement a relationship between the microstructure evolution and mechanical properties of 5083 aluminum alloy sheets.
Dehghani, Evaluation of dissimilar joints properties of 5083-H12 and 6061-T6 aluminum alloys produced by tungsten inert gas and friction stir welding, Proceedings of the Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applications. 231 (2017) 297-308
Miller-Jupp, Control of second-phase particles in the Al-Mg-Mn alloy AA 5083, Journal of Alloys and Compounds. 689 (2016) 998-1010
Yao, Effect of the Addition of Zn on the Microstructure and Mechanical Properties of 5083 Alloy, Journal of Materials Engineering and Performance. 26 (2017) 2912-2918
Jahazi, Influence of predeformation on microstructure evolution of superplastically formed Al 5083 alloy, International Journal of Advanced Manufacturing Technology. 88 (2017) 2929-2937
Dehghani, Evaluation of dissimilar joints properties of 5083-H12 and 6061-T6 aluminum alloys produced by tungsten inert gas and friction stir welding, Proceedings of the Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applications. 231 (2017) 297-308
Miller-Jupp, Control of second-phase particles in the Al-Mg-Mn alloy AA 5083, Journal of Alloys and Compounds. 689 (2016) 998-1010
Yao, Effect of the Addition of Zn on the Microstructure and Mechanical Properties of 5083 Alloy, Journal of Materials Engineering and Performance. 26 (2017) 2912-2918
Jahazi, Influence of predeformation on microstructure evolution of superplastically formed Al 5083 alloy, International Journal of Advanced Manufacturing Technology. 88 (2017) 2929-2937
Online since: October 2013
Authors: Xiao Fei Guo, Hua Sun, Li Ming Feng, Hong Fang Ma
X-ray diffraction analysis indicated the reaction products to be crystal grains of nickel atoms and intermetallic compound of Ni3P.
Based on the study of low-acidity electroless plating preparation method, this essay focused its aim on discovery of the effect of co-deposition of rare earth element Ce on phase structure and thermodynamic stability of Ni-Cu-P-Ce alloy coating[1-4].
The structure of the alloy coatings were analyzed by D8Advance X - ray diffraction .
References [1] SHAN Chuan-Li, HUANG Xin-Min, WUYu-Cheng, ZHANG Zhi-Ming, LIN Zhi-Pin:chinese journal of applied chemistry.25(2008),p.1161
[3]JIN Huiming,GONG Haihua,ZHOU Xiaowei,ZHANG Linnan:CIESC Journal. 160(2009),p.972
Based on the study of low-acidity electroless plating preparation method, this essay focused its aim on discovery of the effect of co-deposition of rare earth element Ce on phase structure and thermodynamic stability of Ni-Cu-P-Ce alloy coating[1-4].
The structure of the alloy coatings were analyzed by D8Advance X - ray diffraction .
References [1] SHAN Chuan-Li, HUANG Xin-Min, WUYu-Cheng, ZHANG Zhi-Ming, LIN Zhi-Pin:chinese journal of applied chemistry.25(2008),p.1161
[3]JIN Huiming,GONG Haihua,ZHOU Xiaowei,ZHANG Linnan:CIESC Journal. 160(2009),p.972
Online since: September 2013
Authors: Mohd Arif Anuar Mohd Salleh, Muhammad Hafiz Zan Hazizi, A.M. Mustafa Al Bakri, A. Abdullah, Kamarudin Hussin, Zainal Ariffin Ahmad
Journal of Alloys and Compounds, 2009. 490(1-2): p. 110-117
Journal of Alloys and Compounds, 2009. 476(1-2): p. 199-206
Journal of Physics D: Applied Physics, 2008. 41(9): p. 095403
Journal of Alloys and Compounds, 2009. 478(1-2): p. 458-461
Journal of Electronic Materials, 2009. 39(2): p. 215-222
Journal of Alloys and Compounds, 2009. 476(1-2): p. 199-206
Journal of Physics D: Applied Physics, 2008. 41(9): p. 095403
Journal of Alloys and Compounds, 2009. 478(1-2): p. 458-461
Journal of Electronic Materials, 2009. 39(2): p. 215-222
Online since: April 2009
Authors: Konstantin Skokov, Yury G. Pastushenkov, E.M. Semenova, Juan Bartolomé
Recently it was shown that these compounds
can exist for different compositions with the same type of crystal structure [8-12].
The aim of this work is the comparative analysis of magnetic properties of RFe11Ti and RFe9Ti single crystals (R=Ho,Er).
Intermetallic compounds with ThMn12 structure have a wide compositional homogeneity region.
Below 50 K both compounds have "easy cone" anisotropy magnetic phase.
Smirnov: Journal of Alloys and Compounds Vol 451 (2008) p. 488 Fig. 1.
The aim of this work is the comparative analysis of magnetic properties of RFe11Ti and RFe9Ti single crystals (R=Ho,Er).
Intermetallic compounds with ThMn12 structure have a wide compositional homogeneity region.
Below 50 K both compounds have "easy cone" anisotropy magnetic phase.
Smirnov: Journal of Alloys and Compounds Vol 451 (2008) p. 488 Fig. 1.
Online since: December 2023
Authors: Agung Purniawan, Sutarsis Sutarsis, Yusuf Pradesar, Syarief Hidayatullah, Jennita Halim
The resulting mixture was washed using distilled water to remove potassium compounds and impurities on the surface up to vacuum filtration to pH 7.
Then to determine the distribution of metal alloys on the carbon surface, scanning electron microscopy (SEM) tests were carried out.
The samples tested were variations of carbon deposited by metal alloys.
This can be seen also in Figures 2 and 3, for NAC1 and NAC2 pores that were initially visible and then disappeared after the addition of metal alloy to carbon, indicating that the pores were closed by metal alloys.
Regarding the dispersion of metal alloys on carbon, it can be declared successful, because the location of the metal alloy is right above the carbon.
Then to determine the distribution of metal alloys on the carbon surface, scanning electron microscopy (SEM) tests were carried out.
The samples tested were variations of carbon deposited by metal alloys.
This can be seen also in Figures 2 and 3, for NAC1 and NAC2 pores that were initially visible and then disappeared after the addition of metal alloy to carbon, indicating that the pores were closed by metal alloys.
Regarding the dispersion of metal alloys on carbon, it can be declared successful, because the location of the metal alloy is right above the carbon.
Online since: September 2016
Authors: Isolda Costa, Maysa Terada, Thallis Leal Almeida, Vera Rosa Capelossi, Fernanda Martins Queiroz
Among the possibilities, some works have been carried out testing cerium compounds; hydrocarbon molecules and treatments with silane [1,9].
The aim of this work is to investigate the effect of chromium free hydrothermal treatments on the corrosion resistance of TSA anodized AA7475-T761 alloy.
This result shows that the precipitation of cerium compounds occurs during the sealing treatment and helps in sealing the anodic film.
A faster kinetics of pores sealing seemingly occurred during hydrothermal treatments involving cerium compounds.
Jinchun, Salt spray corrosion and electrochemical corrosion properties of anodic oxide film on 7475 aluminum alloy, Journal of Alloys and Compounds. 632 (2015) 286–290
The aim of this work is to investigate the effect of chromium free hydrothermal treatments on the corrosion resistance of TSA anodized AA7475-T761 alloy.
This result shows that the precipitation of cerium compounds occurs during the sealing treatment and helps in sealing the anodic film.
A faster kinetics of pores sealing seemingly occurred during hydrothermal treatments involving cerium compounds.
Jinchun, Salt spray corrosion and electrochemical corrosion properties of anodic oxide film on 7475 aluminum alloy, Journal of Alloys and Compounds. 632 (2015) 286–290
Online since: August 2016
Authors: Eduardo Atem de Carvalho, Lioudmila Aleksandrovna Matlakhova, Everton Maick Rangel Pessanha
For the Ni rich TiNi alloys, the influence of the composition over structure and properties is much more evident than for Ti rich TiNi alloys [2,3].
Ti-Ni shape memory alloys.
Shape memory alloys.
Vahhi: Journal of Alloys and Compounds.
Delemont: ASCE Journal of Structural Engineering.
Ti-Ni shape memory alloys.
Shape memory alloys.
Vahhi: Journal of Alloys and Compounds.
Delemont: ASCE Journal of Structural Engineering.