ساخت شیشه سرامیک کوردیریت با استفاده از رزین سیلیکونی و بررسی خواص مکانیکی آن

نوع مقاله: مقاله کامل پژوهشی

نویسندگان

1 مرکز تحصیلات تکمیلی، دانشگاه هوایی شهید ستاری، تهران، تهران، ایران

2 دانشکده مهندسی شیمی و مواد، دانشگاه صنعتی شاهرود، شاهرود، سمنان، ایران

10.30501/jamt.2020.204979.1051

چکیده

کوردیریت (2MgO,2Al2O3,5SiO2)، یکی از ترکیبات موجود در دیاگرام سه‌تایی MgO-Al2O3-SiO2 است که دارای خواصی همچون ثابت دی‌الکتریک و تانژانت اتلاف پایین، ضریب انبساط حرارتی بسیار کم، دیرگدازی و پایداری شیمیایی و مکانیکی مناسب هستند. در این پژوهش، α - کوردیریت با استفاده از روش واکنش حالت‌ جامد پودرهای اکسیدی (اکسید آلومینیوم، اکسید منیزیم و اکسید سیلیسیوم) و رزین سیلیکونی MK ، سنتر شد. جهت فازیابی نمونه­ های سنتز ­شده، آزمون پراش اشعه ایکس انجام گرفت و نشان داد که  α-کوردیریت در دمای 1400 درجه سلسیوس تشکیل می­شود. با انجام آزمون ریزسختی­سنجی، مشاهده شد که سختی α-کوردیریت سنتز­شده برابر با 12/35 گیگاپاسکال است. آزمون خمش سه‌نقطه­ای نیز به‌منظور بررسی استحکام خمشی صورت گرفت و استحکام خمشی 3/6±62 مگاپاسکال به­ دست آمد. همچنین ثابت دی‌الکتریک 3/22-3/18 (در محدوده فرکانس 12-8 گیگاهرتز) و تانژانت تلفات 0/005-0/001 برای α-کوردیریت سنتز­شده، به­ دست آمد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Fabrication of Cordierite Glass Ceramic with the Use of Silicone Resin and Investigating Its Mechanical Properties

نویسندگان [English]

  • Hamidreza Zareie 1
  • Loghman Namaki Gharenav 2
  • Akbar Cheraghi 1
1 Graduate Center, Shahid Sattari Air University, Tehran, Tehran, Iran
2 Department Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Semnan, Iran
چکیده [English]

Cordierite (2MgO,2Al2O3,5SiO2) is one of the compounds in the MgO-Al2O3-SiO2 triple diagram which they have properties such as low dielectric constant and loss tangent, very low thermal expansion coefficient, refractory and suitable chemical and mechanical stability. In this study, α-cordierite was synthesized using the solid state reaction method of oxide powders (aluminum oxide, magnesium oxide and silicon oxide) and MK silicone resin. To investigate the synthesized samples, X-ray diffraction test was performed and showed that α-cordierite is formed at the temperature of 1400 °C. By performing the micro hardness test, it was observed that the hardness of the synthesized α-cordierite is equal to 12.35 GPa. Three-point bending test was performed to evaluate the flexural strength and the flexural strength was 62 ± 3.6 MPa. Also, the dielectric constant of 3.18-3.22 (in the frequency range of 8-12 GHz) and the loss tangent of 0.001-0.005 were obtained for the synthesized α-cordierite.

کلیدواژه‌ها [English]

  • Cordierite
  • Solid State Reaction
  • Silicon Resin
  • Mechanical properties
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