Syntheses and Mechanical Properties of Ti-Al-Si-C-N Coatings by a Hybrid Coating System


Article Preview

In this work, the Ti-Al-Si-C-N coatings were synthesized on Stainless steel and Si wafer by a hybrid coating system, where arc ion plating (AIP) technique was combined with a magnetron sputtering technique. Also, the effect of Si content on the microstructure and mechanical properties of Ti-Al-C-N coatings were systematically investigated. The Ti-Al-Si-C-N coatings characterized by a nanocomposite comprising nano-sized Ti-Al-C-N crystallites embedded in amorphous Si3N4 phase. The micro-hardness values of Ti-Al-Si-C-N coatings were largely depended on Si content and the micro-hardness value of Ti-Al-Si-C-N coatings significantly increased from 38Gpa of Ti-Al-C-N coatings to approximately 56 GPa with the addition Si content of 9.8 at.%. The enhanced hardness values of Ti-Al-Si-C-N coatings were explained with the refinement of Ti-Al-C-N crystallites and composite microstructure characteristics by the percolation of amorphous Si3N4/SiC phase. The average friction coefficient of Ti-Al-Si-C-N decreased from 0.6 of Ti-Al-C-N to 0.23 with increasing the Si content up to 15.3 at. %. The decreased friction coefficients of Ti-Al-Si-C-N coatings was elucidated by the formation of SiO2 or Si(OH)2 layer known as self-lubricant materials.



Edited by:

Byungsei Jun, Hyungsun Kim, Chanwon Lee, Soo Wohn Lee




E. Y. Choi et al., "Syntheses and Mechanical Properties of Ti-Al-Si-C-N Coatings by a Hybrid Coating System ", Materials Science Forum, Vol. 569, pp. 105-108, 2008

Online since:

January 2008




[1] GwangSeok Kim, SangYul Lee, JunHee Hahn, Surf. Coat. Technol. 193 (2005) 213.

[2] Fanghua Mei, Nan Shao, Lun Wei, Geyang Li, Mater. Lett. 59 (2005) 2210.

[3] Harish C. Barshilia, B. Deepthi, K. S. Rajam, Vacuum 81 (2006) 479.

[4] C.S. Jang, T. -H. Jeon, P.K. Song, M.C. Kang, K.H. Kim, Surf. Coat. Technol. 200 (2005) 1501.

[5] S. Carvalho, E. Ribeiro, L. Rebouta, J. Pacaud, Ph. Goudeau, P.O. Renault, J.P. Rivière, C.J. Tavares, Surf. Coat. Technol. 172 (2003).

[30] [35] [40] [45] [50] [55] [60] [65] Hardness [GPa] Si contents [at. %] -2 0 2 4 6 8 10 12 14 16.

[30] [35] [40] [45] [50] [55] [60] 65.