Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16379
Title: Study of the surface layer in cBN growth by PVD techniques
Authors: Li, Q
Wong, SF
Lau, WM
Ong, CW 
Issue Date: 2007
Source: Diamond and related materials, 2007, v. 16, no. 3, p. 421-424
Abstract: A sp2 bonded boron nitride (sp2 BN) surface layer is sometimes observed on top of cubic boron nitride (cBN) grains for BN films deposited using ion-assisted PVD techniques. Understanding the formation of such surface layer gives a clue to the cBN growth mechanisms. In the current study, the microstructure and phase composition near the top surface of several BN films were investigated in order to clarify the formation mechanism of such a surface layer. All the films investigated were synthesized using ion-assisted PVD techniques, but with different deposition parameters. It was found that such a surface layer is not necessarily present in some of the cBN growth, and its presence depends on the bombardment of ion energy during deposition. The cBN growth mechanisms are discussed based on these observations.
Keywords: Cubic boron nitride
Growth mechanisms
Ion-assisted PVD techniques
sp2 bonded boron nitride surface layer
Publisher: Elsevier Science Sa
Journal: Diamond and Related Materials 
DOI: 10.1016/j.diamond.2006.08.020
Appears in Collections:Journal/Magazine Article

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