Investigation of Nitride Bonding Fomation on Phase analysis, Microstructure and Mechanical Properties,of MgO-C Refractories

Subject Areas :

مهدی مهرآذین ¹ , امیرعباس نوربخش ² , سید علی حسن زاده تبریزی ³

1 - دانشگاه آزاد اسلامی شهرضا- کارشناس آزمایشگاههای مهندسی شیمی و مواد
2 - مدیر گروه مهندسی مواد- دانشگاه آزاد شهرضا
3 - هیئت علمی- دانشگاه ازاد نجف اباد

Received: 2015-06-29 Accepted : 2017-06-14 Published : 2017-05-22

Keywords: Mechanical Properties, Silicon Nitride, MgO-C, Nitridation,

Abstract :

Mgo-C refractories due to suitable properties which mainly related to presence of graphite and Carbon bonding are widely used in steel industry. The most disadvantages of these type of refractories is lack of bonding at high temperature. In the present work tried to investigate nitride bonding formation and effect on physical, mechanical properties, phase analysis and microstructure of samples. Result showed that because of presence of forsterite and silicon nitride together thermomechanical properties could be improved.

References:

[1]      س. مهشید،"تاثیر اندازه منیزیا بر سینتیک اکسیداسیون دیرگدازهای منیزیا-گرافیتی در دماهای مختلف"، مجله مواد مهندسی، دوره ۱، شماره ۴، ۱۳۸۸.

 

[2]      ز. ع. نعمتی، "دیرگدازهای سرامیکی"، انتشارات دانشگاه صنعتی شریف، 1382.

 

[3]    S. K Sadrnezhaad, Nemati & and et al, “Effect of Al Antioxidant on the Rate of Oxidation of Carbon in MgO–C Refractoryˮ, Journal of the American Ceramic Society, Vol. 90, Issue. 2, pp. 509–515, 2007.

 

[4]    A. Yamaguchi & et al, “Behaviour of antioxidants added to carbon-containing Refractories”, Journal Global Development of Refractories proceeding, Vol. 2, 1995.

 

[5]    F. F. Lange, “Phase Relations in the System Si3N4-SiO2-MgO and Their Interrelation with Strength and Oxidationˮ, Journal of the American Ceramic Society, Vol. 61, Issue. 1-2, pp. 53–56, 1978.

 

[6]    H. Naef & M. Seegar, “the influence of carbon carriers and Antioxidants on service life of Magnesia Bricks for the oxygen steel converterˮ, interceram, special, Issue 37-40, 1985.

 

[7]    G. Ziegler, J. Heinrich & G. Wotting, “Review Relationships between processing microstructure and properties of dense and reaction bonded silicon nitrideˮ, ,,Jorrnal of Material Science, pp. 3041-3086, 1987.

 

[8]    M. H. Bocanegra - Bernal & B. Matovic, “Mechanical properties of silicon nitride-based ceramics and its use in structural applications at high temperaturesˮ, Materials Science and Engineering, Vol. 527A, pp. 1314–1338, 2010.

 

[9]    A. A. Nourbakhsh, F. Golestani-fard & H. R. Rezaie, “The effect of Si content, firing temperature and urea additive on the properties of nitride bonded SiC refractoriesˮ, Refractories and Industrial Ceramics, Vol. 48, No. 5, 2007.

 

[10] S. Sharafi Zamir, M. Jafari, A. Abas Nourbakhsh&  A. Monshi, “Phase Analysis and Study of the Microstracture of Cordireite-Si3N4 Comoposite synthesis by Nano-and Micro-sized Silicon Particlesˮ, Molecular Crystals and Liquid Crystals, Vol. 555, Issue. 1, 2012.

 

[11] L. Fa, Zh. Dongmei, Zh. Hua & Zh. Wancheng “Properties of reaction-bonded SiC/Si3N4 ceramicsˮ, Materials Science and Engineering, Vol 431A, pp. 285–289, 2006.