-, Ishpal and Panwar, O. S. and Srivastava, A. K. and Kumar, Sushil and Tripathi, R. K. and Kumar, Mahesh and Singh, Sandeep (2011) Effect of substrate bias in amorphous carbon films having embedded nanocrystallites. Surface & Coatings Technology, 206 (1). pp. 155-164. ISSN 0257-8972

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Abstract

The effect of substrate bias on the structural, morphological, electrical and mechanical properties of amorphous carbon (a―C) films having embedded nanocrystallites deposited by filtered cathodic jet carbon arc technique has been investigated. X-ray diffraction exhibits predominantly an amorphous nature of the film. High resolution transmission electron microscope investigations reveal largely an amorphous structure. However, an ultra-fine nanograined microstructure with the average grain size between 20 and 50 nm was observed throughout the entire film and the majority of the individual grains were single crystallites with the preferred interplanar spacing of about 0.2 nm. All the parameters evaluated were seen to depend strongly on the negative substrate bias and exhibit maxima or minima in the properties of the films deposited at − 150 V substrate bias. These a-C films having embedded nanocrystallites act as hard coating materials.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Amorphous carbon; Nanocrystallites; Filtered cathodic jet carbon arc; Substrate bias
Subjects:	Materials Science Applied Physics/Condensed Matter Physics
Divisions:	UNSPECIFIED
Depositing User:	Mr. Abhishek Yadav
Date Deposited:	18 Dec 2012 07:49
Last Modified:	18 Dec 2012 07:49
URI:	http://npl.csircentral.net/id/eprint/872

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