Nano Archive

Syntheses and mechanical properties of quaternary Cr-Mo-Si-N coatings by a hybrid coating system

Hong, Seung Gyun and Shin, Dong-Woo and Kim, Kwang Ho (2008) Syntheses and mechanical properties of quaternary Cr-Mo-Si-N coatings by a hybrid coating system. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 487 (1-2). pp. 586-590.

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Quaternary Cr-Mo-Si-N coatings have been deposited on AISI D2 steel and Si wafers by a hybrid coating system of arc ion plating (AIP) and dc magnetron sputtering techniques. A Cr3Mo AIP target with the fixed arc current of 55 A and Si sputtering target with the varying current of 0-1.4 A were utilized in Ar/N-2 mixed atmosphere during Cr-Mo-Si-N deposition. Microstructure characteristics and mechanical properties of the Cr-Mo-Si-N coatings by this kind of hybrid coating technique were investigated in this paper. The results showed that the microstructure of Cr-Mo-Si-N coatings is nanocomposite consisting of Cr-Mo-N crystallites and amorphous Si3N4. The hardness of the Cr-Mo-Si-N coatings increased from 33 GPa of Cr-Mo-N coating to the peak value of about 50 GPa with Si content of 12.1 at.%, and then decreased with further increasing Si content. The hardness variation of Cr-Mo-Si-N coatings was related to the microstructure evolution in the coatings with increasing the Si contents. The average friction coefficient of Cr-Mo-Si-N coatings gradually decreased with increasing the Si content in the coatings. (C) 2007 Elsevier B.V. All rights reserved.

Item Type:Article
Uncontrolled Keywords:Cr-Mo-Si-N; hybrid coating system; microstructure; mechanical properties
Subjects:Material Science > Functional and hybrid materials
ID Code:6043
Deposited By:IoN
Deposited On:04 Sep 2009 10:53
Last Modified:04 Sep 2009 10:53

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