{"title":"Effect of nitriding on the corrosion of Ti64 in purified pressurized water at 300 °C","authors":"Cyriac Christophe , Quentin Auzoux , Frantz Martin , Frédéric Datcharry , Stéphane Coindeau , Laurence Latu-Romain , Yves Wouters","doi":"10.1016/j.corsci.2025.112901","DOIUrl":null,"url":null,"abstract":"<div><div>Exposure of surface-nitrided Ti64 alloy in purified primary water at 300 °C and 4.2 L.h<sup>−1</sup> (1 mm.s<sup>−1</sup>) led to the oxidation of Ti<sub>2</sub>N to anatase and rutile TiO<sub>2</sub>. A corrosion mechanism was proposed. The corrosion rate was estimated by combining mass variation with image analysis of oxides amounts. It decreased down to approximately 0.7 µm.year<sup>−1</sup> in 151 days and was lower than for untreated Ti64. Approximately 20 % of the corroded material was dissolved and evacuated to the water. The evolution of the TiO<sub>2</sub> layer thickness was consistent with a Loriers-Haycock type model, allowing to predict the material lifetime.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"251 ","pages":"Article 112901"},"PeriodicalIF":7.4000,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25002288","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/1 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Exposure of surface-nitrided Ti64 alloy in purified primary water at 300 °C and 4.2 L.h−1 (1 mm.s−1) led to the oxidation of Ti2N to anatase and rutile TiO2. A corrosion mechanism was proposed. The corrosion rate was estimated by combining mass variation with image analysis of oxides amounts. It decreased down to approximately 0.7 µm.year−1 in 151 days and was lower than for untreated Ti64. Approximately 20 % of the corroded material was dissolved and evacuated to the water. The evolution of the TiO2 layer thickness was consistent with a Loriers-Haycock type model, allowing to predict the material lifetime.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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