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Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters

Mehrdad Zarinejad, Sajjad Rimaz, Yunxiang Tong, Kiyo Wada, Farshid Pahlevani

Johnson Matthey Technology Review, Volume: 67, Issue: 3, Pages: 290 - 299

Swansea University Author: Kiyo Wada

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DOI (Published version): 10.1595/205651323x16527144808494

Abstract

Dependence of mechanical properties of binary Pt-Rh alloys on valence electron ratio (VER), number valence electrons (ev), and average atomic number of the alloys (Z) are investigated. The alloys have high number of valence electrons (9 ≤ ev ≤ 10) and a wide range of the average atomic number (Z = 4...

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Published in: Johnson Matthey Technology Review
ISSN: 2056-5135
Published: Johnson Matthey
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URI: https://cronfa.swan.ac.uk/Record/cronfa63933
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first_indexed 2023-07-24T08:42:16Z
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spelling v2 63933 2023-07-24 Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters 15e59ea2d2602d5c6319b5e5c446d5a7 Kiyo Wada Kiyo Wada true false 2023-07-24 AERO Dependence of mechanical properties of binary Pt-Rh alloys on valence electron ratio (VER), number valence electrons (ev), and average atomic number of the alloys (Z) are investigated. The alloys have high number of valence electrons (9 ≤ ev ≤ 10) and a wide range of the average atomic number (Z = 45–78). Clear correlations between VER of the alloys and their mechanical properties are found. By increasing the VER of the alloy from 0.13 to 0.20 following the increase of Rh content in the composition, the hardness, elastic modulus, and ultimate tensile strength of the alloy increases. Creep rates of the selected alloys clearly decrease with increasing VER at high temperatures (1500-1700 °C), whilst stress rupture time at different temperatures consistently increases because of higher Rh content in the alloy solid solution chemistry. Dependence of mechanical properties on valence electron parameters is discussed with reference to the atomic bonding. Journal Article Johnson Matthey Technology Review 67 3 290 299 Johnson Matthey 2056-5135 Valence electron, VER, Pt-Rh alloys, atomic bonding, 0 0 0 0001-01-01 10.1595/205651323x16527144808494 http://dx.doi.org/10.1595/205651323x16527144808494 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University 2023-09-06T15:52:52.5912867 2023-07-24T09:37:25.5165333 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Mehrdad Zarinejad 1 Sajjad Rimaz 2 Yunxiang Tong 3 Kiyo Wada 4 Farshid Pahlevani 5 63933__28162__f8fdb1ac554940f6968a40ce5d531f49.pdf 63933.pdf 2023-07-24T09:42:39.5850852 Output 745419 application/pdf Version of Record true © 2023 Johnson Matthey. Distributed under the terms of a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters
spellingShingle Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters
Kiyo Wada
title_short Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters
title_full Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters
title_fullStr Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters
title_full_unstemmed Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters
title_sort Dependence of Mechanical Properties of Platinum-Rhodium Binary Alloys on Valence Electron Parameters
author_id_str_mv 15e59ea2d2602d5c6319b5e5c446d5a7
author_id_fullname_str_mv 15e59ea2d2602d5c6319b5e5c446d5a7_***_Kiyo Wada
author Kiyo Wada
author2 Mehrdad Zarinejad
Sajjad Rimaz
Yunxiang Tong
Kiyo Wada
Farshid Pahlevani
format Journal article
container_title Johnson Matthey Technology Review
container_volume 67
container_issue 3
container_start_page 290
institution Swansea University
issn 2056-5135
doi_str_mv 10.1595/205651323x16527144808494
publisher Johnson Matthey
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
url http://dx.doi.org/10.1595/205651323x16527144808494
document_store_str 1
active_str 0
description Dependence of mechanical properties of binary Pt-Rh alloys on valence electron ratio (VER), number valence electrons (ev), and average atomic number of the alloys (Z) are investigated. The alloys have high number of valence electrons (9 ≤ ev ≤ 10) and a wide range of the average atomic number (Z = 45–78). Clear correlations between VER of the alloys and their mechanical properties are found. By increasing the VER of the alloy from 0.13 to 0.20 following the increase of Rh content in the composition, the hardness, elastic modulus, and ultimate tensile strength of the alloy increases. Creep rates of the selected alloys clearly decrease with increasing VER at high temperatures (1500-1700 °C), whilst stress rupture time at different temperatures consistently increases because of higher Rh content in the alloy solid solution chemistry. Dependence of mechanical properties on valence electron parameters is discussed with reference to the atomic bonding.
published_date 0001-01-01T15:52:54Z
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score 11.012857

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