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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| Format: | Proceeding Paper |
| Language: | English English English |
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IOP
2018
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| Online Access: | http://irep.iium.edu.my/61320/ 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 |
| _version_ | 1848785651069091840 |
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| 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 |
| building | IIUM Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T16:56:31Z |
| format | Proceeding Paper |
| id | iium-61320 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T16:56:31Z |
| publishDate | 2018 |
| publisher | IOP |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-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 Proceeding Paper 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 |
| 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 |
| title | 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_short | 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 |
| topic | TA164 Bioengineering |
| url | http://irep.iium.edu.my/61320/ http://irep.iium.edu.my/61320/ http://irep.iium.edu.my/61320/ 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 |