بررسی سنتز و خواص آنتی اکسیدانی کلسیم هگزابوراید

نوع مقاله : علمی و پژوهشی

نویسندگان

1 دانشگاه علم و صنعت

2 دانشگاه آزاد اسلامی واحد علوم و تحقیقات

3 دانشگاه تحصیلات تکمیلی صنعتی و فن آوری پیشرفته، کرمان

چکیده

در این مطالعه، پودر کلسیم هگزا بوراید (CaB6) از طریق سنتز احتراقی تهیه و خاصیت آنتی اکسیدانی آن بررسی شد. الگوهای پراش اشعه ایکس محصولات به دست آمده از فرآیند سنتز احتراقی بعد از شستشو با عوامل شیمیایی مناسب که در آن منیزیم به عنوان عامل احیا کننده استفاده شده بود فقط حضور کلسیم هگزابوراید را نشان دادند، در حالی که وقتی از آلومینیوم و سیلسیم به عنوان عوامل احیا کننده استفاده شد، علاوه بر کلسیم هگز ابوراید، اکسید مربوط به همان عناصر هم مشاهده شدند. کلسیم هگزا بوراید سنتز شده با عامل احیا کننده منیزیم مقاومت به اکسیداسیون بهتری داشت.
 

کلیدواژه‌ها


عنوان مقاله [English]

Investigation on Synthesis and Antioxidant Properties of Calcium Hexaborid

نویسندگان [English]

  • Seyed masoud hoseini mighan 1
  • Rahim Naghizadeh 1
  • Hamid Reza Rezaie 1
  • Negin Moradi Yazdi 2
  • Milad Talebian 3
چکیده [English]

Calcium hexaboride has high melting point (2372K), high hardness (27 GPa), low density (2.45 g/cm3), high Young's modulus (379 GPa) and low thermal expansion. This material has capability for using in composite and as an antioxidant in Oxide-graphite refractories. Synthesis of calcium hexaboride by different processes as hydrothermal, solid state and combustion synthesis are done. CaB6 as an antioxidant in MgO-C refractories can reduce the oxidation of graphite. In this study synthesis and application of CaB6 as an antioxidant are investigated.

کلیدواژه‌ها [English]

  • Calcium Hexaboride
  • Combustion Synthesis
  • Magnesia Carbon Brick
  • Antioxidant
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