{"title":"镍钛原子层沉积TiO2涂层的腐蚀及力学性能研究","authors":"C. Kei, Y. Yu, J. Racek, D. Vokoun, L. Kadeřávek","doi":"10.1109/ICIT.2016.7474948","DOIUrl":null,"url":null,"abstract":"In the case of biomedical NiTi implants staying in the human body not only for a short time, a release of Ni ions from NiTi surface should be prevented because of the poisonous character of Ni. We modified the surface of NiTi plate samples by depositing TiO2 oxide using atomic layer deposition (ALD). We found excellent corrosion properties of the coated NiTi samples, implying that ALD has great potential in depositing protection or biocompatible layer for 3D printing. Additionally, using a mechanical tester installed in the sample chamber of a scanning electron microscope, we were not able to see any tensile-load-induced microcracks in the thin atomic layer deposited TiO2 coating. Whereas the TiO2 layers grown thermally by oxidizing NiTi at temperature around 450 °C contained densely distributed microcracks during loading.","PeriodicalId":116715,"journal":{"name":"2016 IEEE International Conference on Industrial Technology (ICIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Corrosion and mechanical properties of atomic layer deposited TiO2 coatings on NiTi implants\",\"authors\":\"C. Kei, Y. Yu, J. Racek, D. Vokoun, L. Kadeřávek\",\"doi\":\"10.1109/ICIT.2016.7474948\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In the case of biomedical NiTi implants staying in the human body not only for a short time, a release of Ni ions from NiTi surface should be prevented because of the poisonous character of Ni. We modified the surface of NiTi plate samples by depositing TiO2 oxide using atomic layer deposition (ALD). We found excellent corrosion properties of the coated NiTi samples, implying that ALD has great potential in depositing protection or biocompatible layer for 3D printing. Additionally, using a mechanical tester installed in the sample chamber of a scanning electron microscope, we were not able to see any tensile-load-induced microcracks in the thin atomic layer deposited TiO2 coating. Whereas the TiO2 layers grown thermally by oxidizing NiTi at temperature around 450 °C contained densely distributed microcracks during loading.\",\"PeriodicalId\":116715,\"journal\":{\"name\":\"2016 IEEE International Conference on Industrial Technology (ICIT)\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-03-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2016 IEEE International Conference on Industrial Technology (ICIT)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICIT.2016.7474948\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE International Conference on Industrial Technology (ICIT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICIT.2016.7474948","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Corrosion and mechanical properties of atomic layer deposited TiO2 coatings on NiTi implants
In the case of biomedical NiTi implants staying in the human body not only for a short time, a release of Ni ions from NiTi surface should be prevented because of the poisonous character of Ni. We modified the surface of NiTi plate samples by depositing TiO2 oxide using atomic layer deposition (ALD). We found excellent corrosion properties of the coated NiTi samples, implying that ALD has great potential in depositing protection or biocompatible layer for 3D printing. Additionally, using a mechanical tester installed in the sample chamber of a scanning electron microscope, we were not able to see any tensile-load-induced microcracks in the thin atomic layer deposited TiO2 coating. Whereas the TiO2 layers grown thermally by oxidizing NiTi at temperature around 450 °C contained densely distributed microcracks during loading.
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