تاثیر پارامترهای فرآیند آندایز تیتانیم خالص بر مورفولوژی نانولوله های دی‌اکسیدتیتانیم

نوع مقاله : علمی و پژوهشی

نویسندگان

1 گروه مهندسی مواد و متالورژی، دانشکده مهندسی، دانشگاه فردوسی مشهد، مشهد ، ایران

2 گروه مهندسی مواد ومتالورژی، دانشکده مهندسی، دانشگاه فردوسی مشهد، مشهد، ایران

3 گروه مهندسی مواد ومتالورژی، دانشکده مهندسی،دانشگاه فردوسی مشهد، مشهد ، ایران

چکیده

اخیرا ساختار‌های نانومقیاس به دلیل خواص منحصر به فرد خود از جمله سازگاری زیستی خوب توجه زیادی را به خود جلب کرده‌اند. نانولوله‌های تیتانیا (TiO2 NT) با توجه به کاربرد گسترده آن‌ها حائز اهمیت می‌باشند. یکی از روش‌های کاربردی جهت توسعه دی‌اکسیدتیتانیوم، آندایز الکتروشیمیایی به منظور تشکیل نانولوله‌های تیتانیا با طول، قطر و مورفولوژی متفاوت به صورت درجا بر سطح فلز تیتانیوم است. به کمک این روش می‌توان با کنترل پارامتر‌های آندایز با زمان و هزینه اندک، نانولوله‌های دی‌اکسید‌تیتانیوم را با موفولوژی موردنظر فرآوری نمود. در پژوهش حاضر، تیتانیوم خالص (grade2) با اعمال پارامتر‌های آندایز الکتروشیمیایی در حمام استاندارد دو الکترودی مورد مطالعه قرار گرفته‌است. افزون بر آن، تاثیر پارامترهایی از جمله دما، زمان، آماده‌سازی سطحی، نوع کاتد و الکترولیت بر روی ریزساختار نانولوله‌های دی‌اکسید تیتانیوم بررسی شده‌است. ریزساختار توسط میکروسکوپ الکترونی روبشی نشرمیدانی(FESEM) بررسی شده و عناصر موجود در ساختار، توسط تکنیک طیف سنجی پراش انرژی پرتو ایکس(EDS) اندازه‌گیری شده است. نتایج نشان می‌دهد تغییر هر یک از این پارآمتر‌ها طی فرآیند آندایز سبب دست‌یابی به مورفولوژی متفاوت از تیتانیا شده‌است. با افزایش دما در ولتاژ60 ولت، انحلال نانولوله‌ها افزایش و در دما 50 درجه سانتی‌گراد و زمان 270 دقیقه، انحلال شدید دی‌اکسیدتیتانیوم رخ داده‌است. همچنین حضور فلوراید در الکترولیت عامل اصلی تشکیل نانولوله‌ است. برسی تاثیر هر یک از این پارامتر‌ها، سبب دستیابی به شرایط بهینه آندایز گردیده‌است. مشاهده شد افزایش زمان آندایز از 60 به 360 دقیقه سبب افزایش طول نانولوله‌های دی‌اکسید تیتانیوم از 12 به 47 میکرومتر و افزایش قطر نانولوله‌ها از50 به 120 نانومتر گردیده‌است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The effect of anodizing parameters in anodizing process of pure titanium on morphology of titanium‌ dioxide nanotubes

نویسندگان [English]

  • Nazanin Yazdanparast 1
  • Faezeh Darvishian Haghiggi 2
  • Mohsen Haddad sabzevar 3
  • Sahar Mollazadeh Beidokhti 2
1 Department of Materials and Metallurgical Engineering, Faculty of Engineering, Ferdowsi University of mashhad, mashhad, Iran
2 Department of Materials and Metallurgical Engineering, Faculty of Engineering, Ferdowsi University of mashhad, mashhad, Iran
3 Department of Materials and Metallurgical Engineering, Faculty of Engineering, Ferdowsi University of mashhad, mashhad, Iran
چکیده [English]

Nanoscale structures have recently attracted considerable attention due to their unique properties, particularly their excellent biocompatibility. Among these, titania nanotubes (TiO₂ NTs) are notable for their wide-ranging applications in fields such as biomedicine, catalysis, and energy. A highly effective method for fabricating these nanostructures is electrochemical anodization, which enables the direct in-situ formation of TiO₂ nanotubes on the titanium substrate. This technique offers the advantage of controlling nanotube morphology, including length and diameter, through simple adjustments of anodization parameters, making it both cost-effective and time-efficient. In this study, commercially pure titanium (Grade 2) was anodized using a standard two-electrode setup to investigate the influence of various parameters on nanotube formation. The effects of temperature, anodization time, surface preparation, cathode material, and electrolyte composition were systematically examined. Morphological analysis was performed using field emission scanning electron microscopy (FESEM), while elemental composition was determined using energy-dispersive X-ray spectroscopy (EDS). Results indicate that anodization conditions significantly impact the final morphology of the TiO₂ nanotubes. At 60 V, increasing the temperature accelerated nanotube dissolution, with severe degradation observed at 50 °C after 270 minutes. Fluoride ions in the electrolyte were identified as essential for nanotube formation. Additionally, extending the anodization time from 60 to 360 minutes increased the nanotube length from 12 μm to 47 μm and diameter from 50 nm to 120 nm. Overall, understanding the influence of these parameters provides a pathway for optimizing the anodization process to tailor TiO₂ nanotube structures for specific applications.

کلیدواژه‌ها [English]

  • Electrochemical anodizing
  • effect of temperature and time
  • type of cathode and electrolyte
  • pure titanium (grade2)
  • effect of voltage
  • morphology

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