List of Articles Silicon Carbide

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  1 - Interaction of Pyrimidine Nucleobases with Silicon Carbide Nanotube: Effect of Functionalization on Stability and Solvation
  S. Ketabi S. M. Hashemianzadeh
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  2 - Finite Element Modeling of the Vibrational Behavior of Single-Walled Silicon Carbide Nanotube/Polymer Nanocomposites
  S Rouhi R Ansari A Nikkar
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  3 - Improvement Impact Manufacturing Parameteres of Aluminum Foams
  Masoud Golestanipour Amir Izadpanahi Armin Dehnavi Mahdi Kavyani
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  4 - Fatigue Characterization of High Performance Hybrid Aluminium AA 5083/SiCp/Fly Ash Metal Matrix Composites
  SANTHOSH N KEMPAIAH U N SHIJO THOMAS RAVICHANDRAN G
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  5 - Synthesis of graphitic silicon carbide (g-SiC) from gelatin and silica foam for photocatalytic removal of organic and biological pollutants in water
  maryam afsharpour aref rostami
  10.30495/jacr.2023.1976773.2078
  In this research, porous graphitic silicon carbide (g-SiC) doped with nitrogen was synthesized as a metal-free photocatalyst by using silica foam as a silicon source and gelatin as a carbon source. The photocatalytic property of this compound was evaluated in the photoc More

  In this research, porous graphitic silicon carbide (g-SiC) doped with nitrogen was synthesized as a metal-free photocatalyst by using silica foam as a silicon source and gelatin as a carbon source. The photocatalytic property of this compound was evaluated in the photocatalytic removal of azo dyes and gram positive and negative bacteria in visible light. The g-SiC showed a very high potential to remove organic pollutants (99 % in 10 minutes) compared to commercial SiC (8 % in 10 minutes). This enhancement in photocatalytic performance is related to the graphenic structure of this compound, which increases electron transfers and reduces the rate of recombination. Also, the oxygen molecules which dissolved in water can adsorbed on positive charged Si atoms in g-SiC structure and produce oxygenated radicals. These radicals can accelerate photocatalytic reactions as an active species. On the other hand, the use of silica foam increases the surface area, and with the nitrogen doping from the gelatin source, more structural defects, higher absorption, and a smaller band gap are created in the structure, which increases the photocatalytic activity. The obtained results show that this compound can remove azo dyes up to 100% and bacteria up to 80%. Manuscript profile
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  6 - Spark Plasma Sintering of ZrB2–SiC–ZrC Nanocomposit Synthesized by MASPS
  Seyyed Mohsen Emami Esmaeil Salahi Mohammad Zakeri Seyed Ali Tayebifard
  ZrB2–SiC–ZrC nanocomposite were fabricated by spark plasma sintering (SPS) using ZrB2–SiC–ZrC synthesized powder by MA-SPS route. In the present research, sintering mechanism was investigated by displacement-temperature-time (DTT), displacement r More

  ZrB2–SiC–ZrC nanocomposite were fabricated by spark plasma sintering (SPS) using ZrB2–SiC–ZrC synthesized powder by MA-SPS route. In the present research, sintering mechanism was investigated by displacement-temperature-time (DTT), displacement rate vs. temperature and displacement rate vs. time diagrams which were obtained during spark plasma sintering cycles. Sintering process of the composite was completed after 17 min at temperature of 1750°C. By using X-ray powder diffraction (XRD) pattern and Rietveld method, the mean crystallites sizes of about 77, 62 and 56 nm were calculated for ZrB2, SiC and ZrC phases, respectively. The physical and mechanical properties of sintered composite such as: density, Flexural strength, Vickers hardness and fracture toughness were % 99/3, 563 MPa, 18 GPa and 4.9 MPa.m1/2, respectively. Finally scanning electron microscopy (SEM) images show three different phases well distributed all over the sample. It is clear that ZrB2, SiC and ZrC phases are well connected and have good continuity. Manuscript profile
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  7 - The Effect of Silicon Carbide Ceramic Nanoparticles on the Tribological Properties of SN500HVI Paraffinic Base Oil
  Meisam Makkarian Elham Ameri
  The effect of silicon carbide (SiC) nanoparticles on the tribological properties of the base oil was investigated by friction and wear tests. SiC nanoparticles were synthesized by sol-gel method and added to the base oil at various weight percentages of (0.25, 0.5, 1 an More

  The effect of silicon carbide (SiC) nanoparticles on the tribological properties of the base oil was investigated by friction and wear tests. SiC nanoparticles were synthesized by sol-gel method and added to the base oil at various weight percentages of (0.25, 0.5, 1 and 5). To increase the stability of SiC nanoparticles in the base oil, the surface was modified using oleic acid. To characterize the morphology of SiC nanoparticles, the FT-IR, FESEM and XRD techniques were applied. This investigation was carried out in the base oil SN500HVI from Sepahan Oil Company, Iran. The friction and wear tests were performed on the mixture of SN500HVI/nanoparticles. The tribological properties of nanoparticles in base oil were investigated using pin on disc test according to ASTM G99 test method. Based on the results obtained by XRD, the average size of SiC was known to be less than 30 nm. The mixture of nanoparticles in base oil with concentrations of 0.25, 0.5 and 1 wt.% led to reduction of friction coefficient by 26%, 15%, and 4%, in comparison to pure base oil, respectively. This tribological behavior was due to adhesiveness of nanoparticles on involving surfaces. Furthermore, the topography of worn surfaces was analyzed using FESEM. The results illustrated that the nanoparticles can be an effective additives to improve the quality of lubricants in terms of reducing the friction and wear due to their proper physical properties such as suitable hardness, spherical shape and high specific surface area. Manuscript profile
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  8 - The role of graphite substrate on the formation of C/SiC gradient structure during pack cementation process
  Jalil Pourasad Naser Ehsani Seyed Ali Khalife soltani
  The graphite has been generally used as a high-temperature structural material. However, graphite can easily react with oxygen even at temperatures as low as 400 °C. The graded silicon carbide (SiC) characterized by compositional gradation over microscopic distances More

  The graphite has been generally used as a high-temperature structural material. However, graphite can easily react with oxygen even at temperatures as low as 400 °C. The graded silicon carbide (SiC) characterized by compositional gradation over microscopic distances, is considered to be the most promising coating material in order to prevent the oxidation of graphite. In this paper, SiC coating has been created on five kinds of graphite substrates using a pack cementation method. The relationship between the microstructure and property of graphite substrates and SiC coating was investigated experimentally and theoretically. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis demonstrate that the coating obtained by the pack cementation is a dense structure comprising Si, C and β-SiC. It was found that the kind of graphite has marked effect on the microstructure of SiC coating. SiC gradient coating is expected to form on the surface of graphite with high density, good graphitized, appropriate porosity and the pore radius mainly over the range of 600–710 nm. Manuscript profile
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  9 - ساخت نانوکامپوزیت پایه تیتانیوم متراکم شده به روش استاتیکی در فشار های های تراکم گوناگون و بررسی خواص مکانیکی آن
  سید مهران زحلی فرزاد فریبا
  امروزه ساخت نانوکامپوزیت‌ها، برای دستیابی به موادی با خواص ترکیبی و بهبود خاصیت مواد، بسیار مورد توجه محققان قرار گرفته است. یکی از بهترین روش‌های ساخت نانوکامپوزیت‌ها استفاده از روش متالورژی پودر است. زیرا با این روش علاوه بر این‌که ضایعات به حداقل می‌رسند می‌توان مواد More

  امروزه ساخت نانوکامپوزیت‌ها، برای دستیابی به موادی با خواص ترکیبی و بهبود خاصیت مواد، بسیار مورد توجه محققان قرار گرفته است. یکی از بهترین روش‌های ساخت نانوکامپوزیت‌ها استفاده از روش متالورژی پودر است. زیرا با این روش علاوه بر این‌که ضایعات به حداقل می‌رسند می‌توان موادی را که دارای نقطه‌ی ذوب بالا هستند با مواد دارای نقطه‌ی ذوب پایین ترکیب نمود که این کار با روش ریخته‌گری بسیار دشوار خواهد بود. در این تحقیق آلیاژ تیتانیوم برای بهبود خواص مکانیکی با تقویت‌کننده‌ی کاربید سیلیسیم ترکیب شده است. از آن‌جا که پودر تقویت‌کننده‌ی کاربید سیلیسیم در مقیاس نانو می باشد، این دو ماده با هم تشکیل یک نانو کامپوزیت می‌دهند. روش متالورژی پودر بهترین راه برای ترکیب این دو ماده با هم می باشد. در این تحقیق برای تولید این نانو کامپوزیت، از روش فشردن استاتیکی(دستگاه پرس سرد) استفاده شده است. برای مقایسه، سه درصد مختلف تقویت کننده‌ی نانوپودر کاربید سیلیسیم و همچنین، سه فشار پرس مورد استفاده قرار گرفته است. همچنین، آزمایش‌های چگالی، مشاهده مرزبندی دانه‌ها توسط میکروسکوپ الکترونی رویشی، تست فشار و آزمایش سختی روی آن‌ها انجام گرفت. Manuscript profile
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  10 - بررسی اثر کسر حجمی فاز تقویت‎کننده بر خواص کششی کامپوزیت Al6061/SiC به روش اکستروژن گرم
  محمد رضا ستاری محمد رنجبران
  در این پژوهش تاثیر کسر حجمی فاز تقویت کننده برخواص کششی کامپوزیت  Al6061/SiC با اعمال اکستروژن گرم مورد بررسی قرار می­گیرد.کامپوزیت های آلومینیم – سیلیسیم به دلیل خواص سایشی و مکانیکی بالا مورد توجه هستند. برای انجام این تحقیق کامپوزیت Al6061/SiC با درصده More

  در این پژوهش تاثیر کسر حجمی فاز تقویت کننده برخواص کششی کامپوزیت  Al6061/SiC با اعمال اکستروژن گرم مورد بررسی قرار می­گیرد.کامپوزیت های آلومینیم – سیلیسیم به دلیل خواص سایشی و مکانیکی بالا مورد توجه هستند. برای انجام این تحقیق کامپوزیت Al6061/SiC با درصدهای مختلف 5، 10 ، 15 و 20 درصد کاربید سیلیسیم به روش ریخته­گری هم­زدنی تولیدشد و بر روی نمونه‎های کامپوزیتی حاوی کسرهای حجمی ذکرشده، عملیات اکستروژن گرم انجام شد. سپس خواص کششی محصول مورد بررسی قرار گرفت. در ادامه بررسی­های ریزساختاری با استفاده از میکروسکوپ نوری و الکترونی انجام شد. نتایج بدست آمده نشان می دهد که افزایش میزان کاربید سیلیسیم تا 5 درصد وزنی باعث افزایش استحکام کششی کامپوزیت فوق گردید. همچنین اعمال فرآیند اکستروژن باعث کاهش میزان تخلخل نسبت به حالت ریختگی و در نتیجه بهبود خواص کششی شد. Manuscript profile