The effect of molten salt on high temperature behavior of stainless steel and titanium alloy with the presence of water vapor

Azila Baharum, Norinsan Kamil Othman, Emee Marina Salleh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The high temperature oxidation experiment was conducted to study the behavior of titanium alloy Ti6A14V and stainless steel 316 in Na2SO4-50%NaCl + Ar-20%O2 (molten salt) and Na2SO4-50%NaCl + Ar-20%O2 + 12% H2O (molten salt + water vapor) environment at 900°C for 30 hours using horizontal tube furnace. The sample then was investigated using weight change measurement analysis and X-ray diffraction (XRD) analysis to study the weight gained and the phase oxidation that occurred. The weight gained of the titanium alloy was higher in molten salt environment compared to stainless steel due to the rapid growth in the oxide scale but showed almost no change of weight gained upon addition of water vapor. This is due to the alloy was fully oxidized. Stainless steel showed more protection and better effect in molten salt environment compared to mixed environment showed by slower weight gain and lower oxidation rate. Meanwhile, the phase oxidation test of the samples showed that the titanium alloy consist of multi oxide layer of rutile (TiO2) and Al2O3 on the surface of the exposed sample. While stainless steel show the formation of both protective Cr-rich oxide and non-protective Fe-rich oxide layer. This can be concluded that stainless steel is better compared to Ti alloy due to slow growing of chromia oxide. Therefore it is proven that stainless steel has better self-protection upon high temperature exposure.

Original languageEnglish
Title of host publication2017 UKM FST Postgraduate Colloquium
Subtitle of host publicationProceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium
PublisherAmerican Institute of Physics Inc.
Volume1940
ISBN (Electronic)9780735416321
DOIs
Publication statusPublished - 4 Apr 2018
Event2017 UKM FST Postgraduate Colloquium - Selangor, Malaysia
Duration: 12 Jul 201713 Jul 2017

Other

Other2017 UKM FST Postgraduate Colloquium
CountryMalaysia
CitySelangor
Period12/7/1713/7/17

Fingerprint

molten salts
titanium alloys
water vapor
stainless steels
oxides
oxidation
rutile
furnaces
steels
tubes
diffraction
x rays

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Baharum, A., Othman, N. K., & Salleh, E. M. (2018). The effect of molten salt on high temperature behavior of stainless steel and titanium alloy with the presence of water vapor. In 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium (Vol. 1940). [020019] American Institute of Physics Inc.. https://doi.org/10.1063/1.5027934

The effect of molten salt on high temperature behavior of stainless steel and titanium alloy with the presence of water vapor. / Baharum, Azila; Othman, Norinsan Kamil; Salleh, Emee Marina.

2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Vol. 1940 American Institute of Physics Inc., 2018. 020019.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Baharum, A, Othman, NK & Salleh, EM 2018, The effect of molten salt on high temperature behavior of stainless steel and titanium alloy with the presence of water vapor. in 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. vol. 1940, 020019, American Institute of Physics Inc., 2017 UKM FST Postgraduate Colloquium, Selangor, Malaysia, 12/7/17. https://doi.org/10.1063/1.5027934
Baharum A, Othman NK, Salleh EM. The effect of molten salt on high temperature behavior of stainless steel and titanium alloy with the presence of water vapor. In 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Vol. 1940. American Institute of Physics Inc. 2018. 020019 https://doi.org/10.1063/1.5027934
Baharum, Azila ; Othman, Norinsan Kamil ; Salleh, Emee Marina. / The effect of molten salt on high temperature behavior of stainless steel and titanium alloy with the presence of water vapor. 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Vol. 1940 American Institute of Physics Inc., 2018.
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