Paper Title:
Microstructure and Mechanical Properties of Cr-Al-B-N Coatings Prepared by Reactive D.C. and R.F. Co-Sputtering
  Abstract

The current study was undertaken to investigate the synthesis of CrAlN/BN composite coatings having super high hardness by a reactive co-sputtering using CrAl alloy and BN targets and gaseous mixture of Ar+N2, in order to eliminate the possible formation of boride bonding. CrAlN or BN phase was deposited by pulsed d.c.- and r.f.- sputtering, respectively. Plastic hardness, Hpl, and Young’s modulus, E*, of the coatings increased with BN phase ratio, reaching a maximum value of ~46 GPa and 390 GPa at ~8 vol. % of BN phase; and then decreased to ~20GPa and ~300GPa at ~18 vol.%, respectively. Only B1 structured Cr(Al)N phase was found in XRD and SAED analysis. XPS and TEM/HRTEM results revealed that the CrAlN/8vol%BN coating consists mostly of CrAlN and BN phase, which exists as an amorphous like phase among the CrAlN grains. The CrAlN/8vol%BN coating has a kind of nanocomposite structure and the super high hardness over 40 GPa is probably due to this structure.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
781-786
DOI
10.4028/www.scientific.net/MSF.638-642.781
Citation
M. Nose, T. Kawabata, S. Ueda, K. Fujii, K. Matsuda, S. Ikeno, "Microstructure and Mechanical Properties of Cr-Al-B-N Coatings Prepared by Reactive D.C. and R.F. Co-Sputtering", Materials Science Forum, Vols. 638-642, pp. 781-786, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Damiano Galvan, Y.T. Pei, Jeff T.M. de Hosson, Albano Cavaleiro
Abstract:A commercial RF-sputtering deposition rig was employed to deposit H-free diamond-like carbon (DLC) coatings. The influence of alloying...
1026
Authors: Guo Dong Hao, Yong Liang Guo, Gang Liu, Xin Mei Zhang
Abstract:Nanostructured surface layer was produced on Ti-6Al-4V alloy by surface mechanical attrition treatment (SMAT) technique, and the composite...
67
Authors: Ming Zhu, Mei Shuan Li
Abstract:Cr-Al-N coatings were deposited on the surface of the (111) single silicon for the aim to study the thermal stability of this kind of...
249
Authors: Hsi Hsin Chien, Kung Jeng Ma, Chien Hung Kuo
Chapter 3: Mechanical Engineering and Manufacturing
Abstract:Glass molding process provides a great potential for the production of precise glass optical components at low cost. The platinum-iridium...
533
Authors: Lin Yung Tseng, Jhewn Kuang Chen, Kai Hung Hsu, Wan Yu Wu, Chi Lung Chang
Chapter 2: Material Processing Technology, Technologies of Application of Materials
Abstract:Nanocomposite Cr-W-B-N coatings with various tungsten contents were synthesized on silicon wafer substrates. The used technique is a DC...
430