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Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy

In this study, NiTi synthesized via solid-state sintering from Ni-TiH2 powders in reducing environments using (i) CaH2 (ii) MgH2 and (iii) CaH2 and MgH2 as in situ reducing agent were investigated. The phase formation was characterized by means of scanning electron microscope (SEM), energy-disper...

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Main Authors: Mohd Zaki, Hafizah Hanim, Bahrudin, Nik Amnani, Abdullah, Jamaluddin, Sarifuddin, Norshahida
Format: Conference or Workshop Item
Language:English
English
English
Published: IOP 2018
Subjects:
TA164 Bioengineering
Online Access:http://irep.iium.edu.my/61320/7/61320-Effect%20of%20different%20reducing%20agents%20on%20phase.pdf
http://irep.iium.edu.my/61320/8/61320-Effect%20of%20different%20reducing%20agents%20on%20phase%20formation-SCOPUS.pdf
http://irep.iium.edu.my/61320/19/61320_Effect%20of%20different%20reducing%20agents%20on%20phase%20formation_WoS.pdf
http://irep.iium.edu.my/61320/
http://iopscience.iop.org/article/10.1088/1757-899X/290/1/012048/pdf
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spelling my.iium.irep.613202018-08-02T02:32:58Z http://irep.iium.edu.my/61320/ Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy Mohd Zaki, Hafizah Hanim Bahrudin, Nik Amnani Abdullah, Jamaluddin Sarifuddin, Norshahida TA164 Bioengineering In this study, NiTi synthesized via solid-state sintering from Ni-TiH2 powders in reducing environments using (i) CaH2 (ii) MgH2 and (iii) CaH2 and MgH2 as in situ reducing agent were investigated. The phase formation was characterized by means of scanning electron microscope (SEM), energy-dispersive spectroscope (EDS) and powder X-ray diffraction (XRD), while transformation behavior was analyzed using differential scanning calorimetry (DSC) measurement. Among these three reducing agents, synthesis in reducing environment using CaH2 as in situ reducing agent resulted in the formation of single phase NiTi with enthalpy change of 25-26 J/g, which is similar to melt-cast NiTi alloys. Specimens sintered in reducing environments using MgH2 and MgH2+CaH2 as in situ reducing agents have lower enthalpy change, ~16-21 J/g compared to CaH2. This work established the fact that, synthesis in different reducing environment appears to have profound effects on the phase formation and transformation behavior of NiTi. IOP 2018-01-30 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/61320/7/61320-Effect%20of%20different%20reducing%20agents%20on%20phase.pdf application/pdf en http://irep.iium.edu.my/61320/8/61320-Effect%20of%20different%20reducing%20agents%20on%20phase%20formation-SCOPUS.pdf application/pdf en http://irep.iium.edu.my/61320/19/61320_Effect%20of%20different%20reducing%20agents%20on%20phase%20formation_WoS.pdf Mohd Zaki, Hafizah Hanim and Bahrudin, Nik Amnani and Abdullah, Jamaluddin and Sarifuddin, Norshahida (2018) Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy. In: International Conference on Advances in Manufacturing and Materials Engineering (ICAMME 2017), 8th–9th August 2017, Kuala Lumpur, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/290/1/012048/pdf 10.1088/1757-899X/290/1/012048
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
English
topic TA164 Bioengineering
spellingShingle TA164 Bioengineering
Mohd Zaki, Hafizah Hanim
Bahrudin, Nik Amnani
Abdullah, Jamaluddin
Sarifuddin, Norshahida
Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy
description In this study, NiTi synthesized via solid-state sintering from Ni-TiH2 powders in reducing environments using (i) CaH2 (ii) MgH2 and (iii) CaH2 and MgH2 as in situ reducing agent were investigated. The phase formation was characterized by means of scanning electron microscope (SEM), energy-dispersive spectroscope (EDS) and powder X-ray diffraction (XRD), while transformation behavior was analyzed using differential scanning calorimetry (DSC) measurement. Among these three reducing agents, synthesis in reducing environment using CaH2 as in situ reducing agent resulted in the formation of single phase NiTi with enthalpy change of 25-26 J/g, which is similar to melt-cast NiTi alloys. Specimens sintered in reducing environments using MgH2 and MgH2+CaH2 as in situ reducing agents have lower enthalpy change, ~16-21 J/g compared to CaH2. This work established the fact that, synthesis in different reducing environment appears to have profound effects on the phase formation and transformation behavior of NiTi.
format Conference or Workshop Item
author Mohd Zaki, Hafizah Hanim
Bahrudin, Nik Amnani
Abdullah, Jamaluddin
Sarifuddin, Norshahida
author_facet Mohd Zaki, Hafizah Hanim
Bahrudin, Nik Amnani
Abdullah, Jamaluddin
Sarifuddin, Norshahida
author_sort Mohd Zaki, Hafizah Hanim
title Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy
title_short Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy
title_full Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy
title_fullStr Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy
title_full_unstemmed Effect of different reducing agents on phase formation and transformation behaviour of Ni-Ti shape memory alloy
title_sort effect of different reducing agents on phase formation and transformation behaviour of ni-ti shape memory alloy
publisher IOP
publishDate 2018
url http://irep.iium.edu.my/61320/7/61320-Effect%20of%20different%20reducing%20agents%20on%20phase.pdf
http://irep.iium.edu.my/61320/8/61320-Effect%20of%20different%20reducing%20agents%20on%20phase%20formation-SCOPUS.pdf
http://irep.iium.edu.my/61320/19/61320_Effect%20of%20different%20reducing%20agents%20on%20phase%20formation_WoS.pdf
http://irep.iium.edu.my/61320/
http://iopscience.iop.org/article/10.1088/1757-899X/290/1/012048/pdf
_version_ 1643617341293985792
score 13.211869

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