Materials 2013, 6(3), 795-804; doi:10.3390/ma6030795
Article

Influence of N2 Partial Pressure on Structure and Mechanical Properties of TiAlN/Al2O3 Multilayers

1 College of Physics and Electronic Information Science, Tianjin Normal University, Tianjin 300387, China 2 Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China
* Author to whom correspondence should be addressed.
Received: 31 December 2012; in revised form: 22 February 2013 / Accepted: 22 February 2013 / Published: 28 February 2013
(This article belongs to the Special Issue Advances in Multifunctional Materials)
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Abstract: TiAlN/Al2O3 multilayers with different Ar/N2 ratios were deposited on Si substrates in different N2 partial pressure by magnetron sputtering. The crystalline and multilayer structures of the multilayers were determined by a glancing angle X-ray diffractometer (XRD). A nanoindenter was used to evaluate the hardness, the elastic modulus and scratch scan of the multilayers. The chemical bonding was investigated by a X-ray Photoelectron Spectroscopy (XPS). The maximum hardness (36.3 GPa) and elastic modulus (466 GPa) of the multilayers was obtained when Ar/N2 ratio was 18:1. The TiAlN/Al2O3 multilayers were crystallized with orientation in the (111) and (311) crystallographic planes. The multilayers displayed stably plastic recovery in different Ar/N2 ratios. The scratch scan and post scan surface profiles of TiAlN/Al2O3 multilayers showed the highest critical fracture load (Lc) of 53 mN for the multilayer of Ar/N2 = 18:1. It indicated that the multilayer had better practical adhesion strength and fracture resistance.
Keywords: TiAlN/Al2O3 multilayers; magnetron sputtering; hardness; residual stress

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MDPI and ACS Style

Yan, J.; Dong, L.; Gao, C.; Wang, N.; Li, D. Influence of N2 Partial Pressure on Structure and Mechanical Properties of TiAlN/Al2O3 Multilayers. Materials 2013, 6, 795-804.

AMA Style

Yan J, Dong L, Gao C, Wang N, Li D. Influence of N2 Partial Pressure on Structure and Mechanical Properties of TiAlN/Al2O3 Multilayers. Materials. 2013; 6(3):795-804.

Chicago/Turabian Style

Yan, Jingyue; Dong, Lei; Gao, Chongkuan; Wang, Ning; Li, Dejun. 2013. "Influence of N2 Partial Pressure on Structure and Mechanical Properties of TiAlN/Al2O3 Multilayers." Materials 6, no. 3: 795-804.

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