IJE TRANSACTIONS A: Basics Vol. 26, No. 1 (January 2013) 19-24   

downloaded Downloaded: 228   viewed Viewed: 1755

A. A. Sadeghi, A. Khalife soltani, T. Ebadzadeh and B. Raissi
( Received: April 25, 2012 – Accepted in Revised Form: October 18, 2012 )

Abstract    in the present study, electrophoretic deposition (EPD) was used to obtain dense and crack-free layers of Al2O3 on carbon substrate. Microstructural study of the obtained layers by scanning electron (SEM) and optical microscopy (OM) approved that crack-free layers can be obtained by EPD technique. According to obtained results, isopropanol is a suitable media to obtian compact layers which is attributed to unique properties of this media. The crack- free layers were obtained using multi-step electrophretic depostion while using continous EPD process led to the deposition of severly cracked layers. It seems that cracking behaviour of electrophoretically deposited films depends on drying conditions.


Keywords    electrophoretic deposition, carbon, coating, Al2O3 nanoparticle


چکیده    در این مطالعه لایه­نشانی الکتروفورزیس برای بدیست آوردن لایه­ای بدون ترک و متراکم روی زیرلایه کربنی مورد بررسی قرار گرفت. مطالعه ریزساختاری لایه بدست آمده توسط میکروسکوپ الکترونی روبشی و میکروسکوپ نوری نشان داد که یک لایه بدون ترک میتواند توسط پیوسته EPD حاصل شود. برطبق نتایج بدست آمده، ایزوپروپانول به علت داشتن ویژگی­های مناسب فیزیکی محیطی مناسب برای حصول یک لایه متراکم و فشرده است. لایه­ های بدون ترک توسط تکنیک لایه ­نشانی چند مرحله­ ای بدست آمد در حالیکه استفاده از تکنیک EPD تکنیک منجر به ایجاد لایه­ های ترک خورده شد. به نظر می­رسد که ترک نخوردن لایه ایجاد شده به شرایط خشک کردن آن­ها وابسته است.


1.        Pall, A. S., Marsh, C., “Response of friction damped braced frames”. Journal of Structural Engineering, Vol. 108, (1982), 1313-1323.

2.        Aiken, I., Kelly, S., “Earthquake simulator testing and analytical studies of two energy absorbing systems for multi-storey structures”. Report No. UBC/EERC-90/03, (1990), EERC, Berekely.

3.        Grigorian, C. E., Yang, T. S., and Popov, E. P., "Slotted bolted connection energy dissipaters", Earthquake Spectra, Vol. 9, No. 3, (1993), 491-504.

4.        Filliatrault, A., and Cherry, S., "Performance evaluation of friction damped steel frames under EQ. load"; Engineering Labratory Report, Department of Civil Engineering, University of  British Columbia, Vancouver, Canada, (1985).

5.        Patel, C. C., and Jangid, R. S., "Dynamic response of adjacent structures connected by friction damper", Earthquakes and Structures, Vol. 2, No. 2. (2011), 149-169.

6.        Ng, C. L. and Xu, Y. L., "Seismic response control of a building complex utilizing passive friction damper: Experimental investigation", Earthquake Engineering & Structural Dynamics, Vol. 35, No. 6, (2006), 657-677.

7.        Maheri, M. R., and Akbari, R.; "Seismic Behavior Factor, R, for Steel X-Braced and Knee- Braced RC Buildings"; Engineering Structures; Vol. 25, No. 15, (2003), 1505-1513.

8.        Balendra, T., and Huang, X., "Over strength and ductility factors for steel frames designed according to BS 5950"; Journal of Structural Engineering, ASCE; Vol. 129, No. 8, (2003), 1019-1035.

9.        Asgarian, B. and H. Shokrgozar, "BRBF response modification factor", Journal of Constructional Steel Research, Vol. 65, No. 2, (2009), 290-298.

10.     Ibrahimbegovic, A. and Wilson, E., "Simple numerical algorithms for the mode superposition analysis of linear structural systems with non-proportional damping", Computers & Structures,  Vol. 33, No. 2, (1989), 523-531.

11.     Lee, S. K., Park, J. H., Moon, B. W., Min, K. W., Lee, S. H., and Kim, J., "Design of a bracing-friction damper system for seismic retrofitting", Smart Structures and Systems, Vol. 4, No. 5, (2008), 685-696.

12.     Uang, C., "Seismic force reduction and displacement amplification factors", in 10th World Conference on Earthquake Engineering, Madrid. Vol. 10, (1992), 5875-5880.

13.     Vaseghi Amiri, J., Navayinia B., and Navaei, "Evaluation of performance of eccentric braced frame with friction damper", Structural Engineering and Mechanics, Vol. 39, No. 5, (2011), 717-732.

14.     Nassar, A. A., Osterass, J. D. and Krawinkler, H., "Seismic design based on strength and ductility demands," Process Tenth world Conference on Earthquake Engineering, Vol. 10, (1992), 5861-5866.

Esmaeiltabar, P., Vaseghi, J.,”Investigate of the behavior factor of the chevron steel braced frame equiped with pall friction damper”, Thesis, Master of Science, Noshirvani University of Technology, Babol, Iran, (2011).

International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir