نوع مقاله : مقاله کامل پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشکده مهندسی معدن و متالورژی، دانشگاه یزد، یزد، یزد، ایران

2 دانشیار، دانشکده مهندسی معدن و متالورژی، دانشگاه یزد، یزد، یزد، ایران

3 استادیار، دانشکده مهندسی معدن و متالورژی، دانشگاه یزد، یزد، یزد، ایران

10.30501/jamt.2022.293503.1181

چکیده

درحالی‌که هیدروکسی‌آپاتیت، یکی از زی‌سرامیک­های زیست­سازگار و عایق است، نانولوله‌های کربنی از قابلیت هدایت حرارتی بالایی برخوردارند. این پژوهش با هدف مقایسه هدایت حرارتی چندسازه هیدروکسی‌آپاتیت/ نانولوله کربنی، در دو سیال آب و مایع شبیه‌ساز بدن به‌منظور دستیابی هم‌زمان به زیست­سازگاری و هدایت حرارتی برای پوشش­دهی دندانی انجام شد. در این مطالعه، پس از سنتز هیدروکسی‌آپاتیت، نانوسیال هیدروکسی‌آپاتیت ساخته و نانولوله‌های کربنی آماده‌سازی­شده (با نسبت حجمی هیدروکسی‌آپاتیت/ نانولوله کربنی معادل 1) به آن اضافه ­شد تا نانوسیال با درصدهای حجمی مختلف (2/0 تا 1) از ماده چندسازه‌ای به‌دست آید. آزمون‌های پراش پرتوی ایکس (XRD) و میکروسکوپ الکترونی روبشی گسیل میدانی (FE-SEM) برای     مشخصه­یابی نانومواد و مواد چندسازه‌ای انجام شد. اندازه­گیری هدایت حرارتی برای هر دو نانو­سیال چندسازه‌ای بر پایه آب و مایع شبیه‌ساز بدن در بازه دمایی 20 تا 50 درجه سلسیوس انجام شد. نتایج نشان داد که بالاترین درصد افزایش هدایت حرارتی در نانوسیال چندسازه‌ای، مربوط به نمونه یک درصد حجمی است؛ به‌طوری‌که برای نانوسیال چندسازه‌ای بر پایه آب، افزایش 20 درصدی و برای نانوسیال چندسازه‌ای بر پایه مایع شبیه‌ساز بدن، افزایش 32 درصدی در دمای 50 درجه سلسیوس حاصل می­شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Hydroxyapatite Bioceramic Heat Transfer Comparison in Water and Simulated Body Fluid after Addition of Carbon Nanotube

نویسندگان [English]

  • Omid Malekahmadi 1
  • Mahdi Kalantar 2
  • Mohsen Nouri Khezrabad 3

1 M. Sc. Student, Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Yazd, Iran

2 Associate Professor, Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Yazd, Iran

3 Assistant Professor, Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Yazd, Iran

چکیده [English]

Although Hydroxyapatite (HA) is one of the biocompatible and insulating ceramics, Carbon Nanotube (CNT) is superior due to its high thermal conductivity. This research aims to compare the thermal conductivity of HA/CNT composite in two fluids, i.e., water and Simulated Body Fluid (SBF), to achieve simultaneous biocompatibility and thermal conductivity for dental coatings. To this end, followed by synthesizing the hydroxyapatite, the HA nanofluid was made, and the prepared carbon nanotube was added to the HA nanofluid (volume ratio of HA:CNT was 1:1) to achieve the hybrid nanofluid with different volume fractions (0.2 to 1.0 Vol %). The thermal conductivity was then measured for the two water and SBF fluids in the temperature range of 20 to 50 °C. The results showed that 1.0 Vol % sample of the hybrid nanofluid had the maximum thermal conductivity enhancement compared to the SBF-based hybrid and water-based hybrid nanofluids with 32 % and 20 % enhancement, respectively, at 50 °C.

کلیدواژه‌ها [English]

  • Thermal Conductivity
  • Hydroxyapatite
  • Carbon Nanotube
  • Dental Coating
  • Nanofluid
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