•  
  •  
 

Abstract

Magnesium Effect to the Hardness of Al2O3/Al Ceramic Matrix Composites. Composite is an alternative material which has satisfying properties and can be accommodated for certain applications. Ceramic Matrix Composites (CMCs) is one of the composite types that are very interesting in terms of high temperature applications material. In this paper, we investigate the effects of Mg addition on the hardness of Al2O3 Ceramic Matrix Composites which was produced by directed metal oxidation (Dimox) method. The CMCs material is made by placing Al ingot under mixture alumina and percentage of Mg 5, 8, 10, and 12% wt. The processing temperature was 1100°C for 24 hours followed by cooling to room temperature in the furnace. The results show that increasing of infiltration, the hardness increased to 1221 VHN maximum at 8% wt Mg and then decrease again as the increment amount of Mg.

References

[1] Anon., ASM Handbook Vol. 21, Composites, ASM International, Cleveland-Ohio, 2001, pp. 1, 387-389, 1356-1357. [2] M. S. Newkirk, A. W. Urquhart, H. R. Zwicker, J. Matter Res. 1 (1986) 81-89. [3] M.K. Aghajanian, N.H. Macmillan, C.R. Kennedy, S.J. Luszcz, R. Roy, Properties and Microstructures of Lanxide Al2O3–Al Ceramic Composite Material, Journal of materials Science 24 (1989) 658-670. [4] F.J.A.H. Guillard, R.J. Hand, W.E. Lee, British Ceramic Transactions, 93 (4) (1994) 129-136. [5] P. Xiao, B. Derby, Journals of American Ceramic 77/7 (1994) 1761-1770. [6] Diagram Ellingham, http://www.Chem.mtu.edu/skkawan/Ellingham.pdf, diakses 9 Juni 2006. [7] K. Konopka, M. Szafran, Journal of Materials Processing Technology 175 (2006) 266–270. [8] NG H.L. Dickon, Q. Zhao, C. Qin, M.W. Ho, Y. Hong, Journal The European Ceramics Society 21 (2001) 1049-1053. [9] E. M. Uygur, International Journal of Machine Tolls Manufacture, 37/10 (1997) 1539-1553. [10] A. A. Nagelberg, J. Matter. Res 7 (1992) 265-268. [11] X. Gu, R.J. Hand, Journal of the European Ceramic Society, Vol. XX (1995) 823 – 831. [12] B. Breval, M.K. Aghajanian, J. Biel, A.S. Nagelberg, Journal Of Materials Science Letters 14 (1995) 28-30. [13] E. Manor, H. Ni, C.G. Levi, Journal of The American Ceramic Society 76/7 (2001) 1777- 1787. [14] S.Y. Oh, J.A. Cornie, K.C. Russel, Metallurgical Transaction 20A (1989) 533-541.

Download

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.