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Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium
Experimental cast titanium alloys containing 20 mass% chromium (Ti-20Cr) show preferable mechanical properties and a good corrosion resistance. This study evaluated the fretting corrosion behavior of Ti-20Cr. Ti-20Cr (n = 4) and commercially pure titanium (CP-Ti, n = 6) disk specimens were used. The...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459177/ https://www.ncbi.nlm.nih.gov/pubmed/28772554 http://dx.doi.org/10.3390/ma10020194 |
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author | Sawada, Tomofumi Schille, Christine Almadani, Atif Geis-Gerstorfer, Jürgen |
author_facet | Sawada, Tomofumi Schille, Christine Almadani, Atif Geis-Gerstorfer, Jürgen |
author_sort | Sawada, Tomofumi |
collection | PubMed |
description | Experimental cast titanium alloys containing 20 mass% chromium (Ti-20Cr) show preferable mechanical properties and a good corrosion resistance. This study evaluated the fretting corrosion behavior of Ti-20Cr. Ti-20Cr (n = 4) and commercially pure titanium (CP-Ti, n = 6) disk specimens were used. The fretting corrosion test was performed by electrochemical corrosion at 0.3 V in 0.9% saline solution and mechanical damage using 10 scratching cycles with three different scratching speeds (10–40 mm/s) at 10 N. After testing, the activation peak, repassivation time and surface morphology of each specimen were analyzed. The differences between the results were tested by parametric tests (α = 0.05). The average activation peaks were significantly higher in CP-Ti than in Ti-20Cr (p < 0.01), except at 20 mm/s. In the series of scratching speeds, faster scratching speeds showed higher activation peaks. The maximum activation peaks were also higher in CP-Ti. Slight differences in the repassivation time were observed between the materials at every scratching speed; faster scratching speeds showed shorter repassivation times in both materials (p < 0.05). CP-Ti showed severe damage and significantly higher wear depth than Ti-20Cr (p < 0.05). In conclusion, adding chromium to titanium reduced surface damage and improved the fretting corrosion resistance. |
format | Online Article Text |
id | pubmed-5459177 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54591772017-07-28 Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium Sawada, Tomofumi Schille, Christine Almadani, Atif Geis-Gerstorfer, Jürgen Materials (Basel) Article Experimental cast titanium alloys containing 20 mass% chromium (Ti-20Cr) show preferable mechanical properties and a good corrosion resistance. This study evaluated the fretting corrosion behavior of Ti-20Cr. Ti-20Cr (n = 4) and commercially pure titanium (CP-Ti, n = 6) disk specimens were used. The fretting corrosion test was performed by electrochemical corrosion at 0.3 V in 0.9% saline solution and mechanical damage using 10 scratching cycles with three different scratching speeds (10–40 mm/s) at 10 N. After testing, the activation peak, repassivation time and surface morphology of each specimen were analyzed. The differences between the results were tested by parametric tests (α = 0.05). The average activation peaks were significantly higher in CP-Ti than in Ti-20Cr (p < 0.01), except at 20 mm/s. In the series of scratching speeds, faster scratching speeds showed higher activation peaks. The maximum activation peaks were also higher in CP-Ti. Slight differences in the repassivation time were observed between the materials at every scratching speed; faster scratching speeds showed shorter repassivation times in both materials (p < 0.05). CP-Ti showed severe damage and significantly higher wear depth than Ti-20Cr (p < 0.05). In conclusion, adding chromium to titanium reduced surface damage and improved the fretting corrosion resistance. MDPI 2017-02-17 /pmc/articles/PMC5459177/ /pubmed/28772554 http://dx.doi.org/10.3390/ma10020194 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Sawada, Tomofumi Schille, Christine Almadani, Atif Geis-Gerstorfer, Jürgen Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium |
title | Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium |
title_full | Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium |
title_fullStr | Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium |
title_full_unstemmed | Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium |
title_short | Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium |
title_sort | fretting corrosion behavior of experimental ti-20cr compared to titanium |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459177/ https://www.ncbi.nlm.nih.gov/pubmed/28772554 http://dx.doi.org/10.3390/ma10020194 |
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