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Influence of cBN content, Al2O3 and Si3N4 additives and their morphology on microstructure, properties, and wear of PCBN with NbN binder

Rumiantseva, Yu ; Melnichuk, Iu ; Garashchenko, V. ; Zaporozhets, O. ; Turkevich, V. LU and Bushlya, V. LU (2020) In Ceramics International 46(14). p.22230-22238
Abstract

Polycrystalline cubic boron nitride (PCBN) tool materials with NbN binder without additives and PCBN with Al2O3 or Si3N4 micropowder and whisker additives were manufactured and compared. PCBN materials with Si3N4 whisker reinforcement have the best mechanical properties of all the evaluated materials. Composites reinforced with Al2O3 whiskers have the lowest fracture toughness. However, Al2O3 whisker-reinforced tools outperform both commercial and Si3N4 reinforced tools when machining hardened steel. Thus Al2O3 whisker-reinforced PCBN materials are promising for industrial... (More)

Polycrystalline cubic boron nitride (PCBN) tool materials with NbN binder without additives and PCBN with Al2O3 or Si3N4 micropowder and whisker additives were manufactured and compared. PCBN materials with Si3N4 whisker reinforcement have the best mechanical properties of all the evaluated materials. Composites reinforced with Al2O3 whiskers have the lowest fracture toughness. However, Al2O3 whisker-reinforced tools outperform both commercial and Si3N4 reinforced tools when machining hardened steel. Thus Al2O3 whisker-reinforced PCBN materials are promising for industrial applications, likely due to their higher resistance to oxidation and diffusional wear mechanisms during cutting operations.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
cBN, Fracture toughness, Phase composition, Wear, Whiskers
in
Ceramics International
volume
46
issue
14
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85086644875
ISSN
0272-8842
DOI
10.1016/j.ceramint.2020.05.300
language
English
LU publication?
yes
id
1fbb651d-76a9-41cb-b841-16427967f63b
date added to LUP
2020-06-29 21:01:15
date last changed
2023-11-20 07:15:55
@article{1fbb651d-76a9-41cb-b841-16427967f63b,
  abstract     = {{<p>Polycrystalline cubic boron nitride (PCBN) tool materials with NbN binder without additives and PCBN with Al<sub>2</sub>O<sub>3</sub> or Si<sub>3</sub>N<sub>4</sub> micropowder and whisker additives were manufactured and compared. PCBN materials with Si<sub>3</sub>N<sub>4</sub> whisker reinforcement have the best mechanical properties of all the evaluated materials. Composites reinforced with Al<sub>2</sub>O<sub>3</sub> whiskers have the lowest fracture toughness. However, Al<sub>2</sub>O<sub>3</sub> whisker-reinforced tools outperform both commercial and Si<sub>3</sub>N<sub>4</sub> reinforced tools when machining hardened steel. Thus Al<sub>2</sub>O<sub>3</sub> whisker-reinforced PCBN materials are promising for industrial applications, likely due to their higher resistance to oxidation and diffusional wear mechanisms during cutting operations.</p>}},
  author       = {{Rumiantseva, Yu and Melnichuk, Iu and Garashchenko, V. and Zaporozhets, O. and Turkevich, V. and Bushlya, V.}},
  issn         = {{0272-8842}},
  keywords     = {{cBN; Fracture toughness; Phase composition; Wear; Whiskers}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{14}},
  pages        = {{22230--22238}},
  publisher    = {{Elsevier}},
  series       = {{Ceramics International}},
  title        = {{Influence of cBN content, Al<sub>2</sub>O<sub>3</sub> and Si<sub>3</sub>N<sub>4</sub> additives and their morphology on microstructure, properties, and wear of PCBN with NbN binder}},
  url          = {{http://dx.doi.org/10.1016/j.ceramint.2020.05.300}},
  doi          = {{10.1016/j.ceramint.2020.05.300}},
  volume       = {{46}},
  year         = {{2020}},
}