{"title":"电化学腐蚀后TiNi合金的组织与相变化","authors":"A. A. Churakova, E. I. Iskhakova","doi":"10.1134/S1067821225600188","DOIUrl":null,"url":null,"abstract":"<p>In the presented paper, complex studies of microstructure and phase composition of the alloy before and after electrochemical corrosion tests in solutions of 1 M HCl, 3 M HCl, 1 M H<sub>2</sub>SO<sub>4</sub>, and 3 M H<sub>2</sub>SO<sub>4</sub> have been carried out. The studies showed that the corrosion process in the alloy Ti<sub>49.1</sub>Ni<sub>50.9</sub> in the case of electrochemical corrosion took place on all samples and in all solutions in the form of appearance of pittings, as well as with corrosion products when tested in H<sub>2</sub>SO<sub>4</sub> solutions with different concentrations; in the case of 3 M HCl, corrosion products were also found on the surface of the samples. A change in character of the microstructure was found in the coarse grained state in 3 M solutions, while no such change was found in the ultrafine grained state.</p>","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"65 5","pages":"280 - 289"},"PeriodicalIF":0.6000,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructural and Phase Changes in TiNi Alloy after Electrochemical Corrosion Tests\",\"authors\":\"A. A. Churakova, E. I. Iskhakova\",\"doi\":\"10.1134/S1067821225600188\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In the presented paper, complex studies of microstructure and phase composition of the alloy before and after electrochemical corrosion tests in solutions of 1 M HCl, 3 M HCl, 1 M H<sub>2</sub>SO<sub>4</sub>, and 3 M H<sub>2</sub>SO<sub>4</sub> have been carried out. The studies showed that the corrosion process in the alloy Ti<sub>49.1</sub>Ni<sub>50.9</sub> in the case of electrochemical corrosion took place on all samples and in all solutions in the form of appearance of pittings, as well as with corrosion products when tested in H<sub>2</sub>SO<sub>4</sub> solutions with different concentrations; in the case of 3 M HCl, corrosion products were also found on the surface of the samples. A change in character of the microstructure was found in the coarse grained state in 3 M solutions, while no such change was found in the ultrafine grained state.</p>\",\"PeriodicalId\":765,\"journal\":{\"name\":\"Russian Journal of Non-Ferrous Metals\",\"volume\":\"65 5\",\"pages\":\"280 - 289\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2025-05-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Journal of Non-Ferrous Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1067821225600188\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Non-Ferrous Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1067821225600188","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
摘要
本文对该合金在1 M HCl、3 M HCl、1 M H2SO4和3 M H2SO4溶液中电化学腐蚀前后的显微组织和相组成进行了复杂的研究。研究表明：在电化学腐蚀情况下，Ti49.1Ni50.9合金的腐蚀过程在所有样品和所有溶液中都以点蚀的形式发生，并且在不同浓度的H2SO4溶液中都有腐蚀产物；在3 M HCl的情况下，样品表面也发现了腐蚀产物。在3 M溶液中，粗晶态的组织特征发生了变化，而超细晶态的组织特征没有发生变化。
Microstructural and Phase Changes in TiNi Alloy after Electrochemical Corrosion Tests
In the presented paper, complex studies of microstructure and phase composition of the alloy before and after electrochemical corrosion tests in solutions of 1 M HCl, 3 M HCl, 1 M H2SO4, and 3 M H2SO4 have been carried out. The studies showed that the corrosion process in the alloy Ti49.1Ni50.9 in the case of electrochemical corrosion took place on all samples and in all solutions in the form of appearance of pittings, as well as with corrosion products when tested in H2SO4 solutions with different concentrations; in the case of 3 M HCl, corrosion products were also found on the surface of the samples. A change in character of the microstructure was found in the coarse grained state in 3 M solutions, while no such change was found in the ultrafine grained state.
期刊介绍：
Russian Journal of Non-Ferrous Metals is a journal the main goal of which is to achieve new knowledge in the following topics: extraction metallurgy, hydro- and pirometallurgy, casting, plastic deformation, metallography and heat treatment, powder metallurgy and composites, self-propagating high-temperature synthesis, surface engineering and advanced protected coatings, environments, and energy capacity in non-ferrous metallurgy.
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