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Extreme Hardness Achievements in Binderless Cubic Boron Nitride Tools

Melaibari, Ammar; Wu, Zhuoru; Molian, Pal; Shrotria, Pranav; Bushlya, Volodymyr LU ; Zhou, Jinming LU ; Ståhl, Jan-Eric LU and Petrusha, Igor (2013) 41-st SME North American Manufacturing Research Conference In Transactions of the North American Manufacturing Research Institution of SME Volume 41, 2013 p.449-457
Abstract
Binderless cubic boron nitride tools are available in two forms: single phase cBN and dual phase wBN/cBN (w is

wurtzite phase). In this work, a novel heat treatment process involving surface heating using a continuous wave

CO2 laser followed by tandem waterjet quenching of the laser beam path was applied to increase the hardness of

both forms of boron nitride. Stress-induced phase transitions and nanometric grain sizes accompanying the rapid

quench heat treatment enabled a hardness increase of 20% in single phase cBN (nominal 60 GPa) and 100% in dual

phase wBN/cBN (nominal 75 GPa) that attest the ability of cBN to reach the hardness of polycrystalline diamond

(65-80 GPa). The effects of... (More)
Binderless cubic boron nitride tools are available in two forms: single phase cBN and dual phase wBN/cBN (w is

wurtzite phase). In this work, a novel heat treatment process involving surface heating using a continuous wave

CO2 laser followed by tandem waterjet quenching of the laser beam path was applied to increase the hardness of

both forms of boron nitride. Stress-induced phase transitions and nanometric grain sizes accompanying the rapid

quench heat treatment enabled a hardness increase of 20% in single phase cBN (nominal 60 GPa) and 100% in dual

phase wBN/cBN (nominal 75 GPa) that attest the ability of cBN to reach the hardness of polycrystalline diamond

(65-80 GPa). The effects of laser heat treatment are identified by an examination of the changes in phase and

microstructure by Raman spectroscopy, high resolution scanning electron microscopy and X-ray diffraction. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Transactions of the North American Manufacturing Research Institution of SME Volume 41, 2013
editor
Ziegert, John
pages
9 pages
conference name
41-st SME North American Manufacturing Research Conference
external identifiers
  • Other:NAMRC41-1547
  • Scopus:84892689993
ISBN
978-1-62748-697-2
language
English
LU publication?
yes
id
3b44fe84-2241-4c05-bd57-ca8e0f442e12 (old id 4251026)
date added to LUP
2014-01-21 08:30:25
date last changed
2016-10-13 04:58:02
@misc{3b44fe84-2241-4c05-bd57-ca8e0f442e12,
  abstract     = {Binderless cubic boron nitride tools are available in two forms: single phase cBN and dual phase wBN/cBN (w is<br/><br>
wurtzite phase). In this work, a novel heat treatment process involving surface heating using a continuous wave<br/><br>
CO2 laser followed by tandem waterjet quenching of the laser beam path was applied to increase the hardness of<br/><br>
both forms of boron nitride. Stress-induced phase transitions and nanometric grain sizes accompanying the rapid<br/><br>
quench heat treatment enabled a hardness increase of 20% in single phase cBN (nominal 60 GPa) and 100% in dual<br/><br>
phase wBN/cBN (nominal 75 GPa) that attest the ability of cBN to reach the hardness of polycrystalline diamond<br/><br>
(65-80 GPa). The effects of laser heat treatment are identified by an examination of the changes in phase and<br/><br>
microstructure by Raman spectroscopy, high resolution scanning electron microscopy and X-ray diffraction.},
  author       = {Melaibari, Ammar and Wu, Zhuoru and Molian, Pal and Shrotria, Pranav and Bushlya, Volodymyr and Zhou, Jinming and Ståhl, Jan-Eric and Petrusha, Igor},
  editor       = {Ziegert, John},
  isbn         = {978-1-62748-697-2},
  language     = {eng},
  pages        = {449--457},
  series       = {Transactions of the North American Manufacturing Research Institution of SME Volume 41, 2013},
  title        = {Extreme Hardness Achievements in Binderless Cubic Boron Nitride Tools},
  year         = {2013},
}