Allotrope conversion and surface hardness increase in ion implanted boron nitride

T. E. Derry, L. I. Lisema, A. T. Magabe, Emily Aradi, R. Machaka, M. Madhuku

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Previously, it has been shown that the implantation of hexagonal boron nitride with light ions (e.g. He+, Li+, B+) produces a surface layer containing nanoparticles of the much harder cubic form, as revealed by Raman spectroscopy, X-ray diffraction and electron microscopy. The present study shows that the irradiated layer is measurably harder when interrogated by micro-indentation which probes a layer comparable to the ion range. The hardness value increases reproducibly with the ion fluence, confirming that the latter is responsible for it. There are possible implications for the surface hardening of BN components after they have been configured in the easily machinable hexagonal form. Some aspects of the hardening mechanism are discussed.
LanguageEnglish
Pages61-64
Number of pages4
JournalSurface and Coatings Technology
Volume355
Early online date4 Apr 2018
DOIs
Publication statusPublished - 15 Dec 2018

Fingerprint

Boron nitride
boron nitrides
hardening
hardness
Hardness
Ions
Hardening
light ions
indentation
implantation
surface layers
electron microscopy
fluence
ions
Raman spectroscopy
microscopy
Indentation
Ion implantation
nanoparticles
Electron microscopy

Cite this

Derry, T. E. ; Lisema, L. I. ; Magabe, A. T. ; Aradi, Emily ; Machaka, R. ; Madhuku, M. / Allotrope conversion and surface hardness increase in ion implanted boron nitride. In: Surface and Coatings Technology. 2018 ; Vol. 355. pp. 61-64.
@article{146617705d0448229102a690e43dfc65,
title = "Allotrope conversion and surface hardness increase in ion implanted boron nitride",
abstract = "Previously, it has been shown that the implantation of hexagonal boron nitride with light ions (e.g. He+, Li+, B+) produces a surface layer containing nanoparticles of the much harder cubic form, as revealed by Raman spectroscopy, X-ray diffraction and electron microscopy. The present study shows that the irradiated layer is measurably harder when interrogated by micro-indentation which probes a layer comparable to the ion range. The hardness value increases reproducibly with the ion fluence, confirming that the latter is responsible for it. There are possible implications for the surface hardening of BN components after they have been configured in the easily machinable hexagonal form. Some aspects of the hardening mechanism are discussed.",
keywords = "Boron nitride, Hardening, Ion implantation",
author = "Derry, {T. E.} and Lisema, {L. I.} and Magabe, {A. T.} and Emily Aradi and R. Machaka and M. Madhuku",
year = "2018",
month = "12",
day = "15",
doi = "10.1016/j.surfcoat.2018.04.005",
language = "English",
volume = "355",
pages = "61--64",
journal = "Surface and Coatings Technology",
issn = "0257-8972",
publisher = "Elsevier",

}

Allotrope conversion and surface hardness increase in ion implanted boron nitride. / Derry, T. E.; Lisema, L. I.; Magabe, A. T.; Aradi, Emily; Machaka, R.; Madhuku, M.

In: Surface and Coatings Technology, Vol. 355, 15.12.2018, p. 61-64.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Allotrope conversion and surface hardness increase in ion implanted boron nitride

AU - Derry, T. E.

AU - Lisema, L. I.

AU - Magabe, A. T.

AU - Aradi, Emily

AU - Machaka, R.

AU - Madhuku, M.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Previously, it has been shown that the implantation of hexagonal boron nitride with light ions (e.g. He+, Li+, B+) produces a surface layer containing nanoparticles of the much harder cubic form, as revealed by Raman spectroscopy, X-ray diffraction and electron microscopy. The present study shows that the irradiated layer is measurably harder when interrogated by micro-indentation which probes a layer comparable to the ion range. The hardness value increases reproducibly with the ion fluence, confirming that the latter is responsible for it. There are possible implications for the surface hardening of BN components after they have been configured in the easily machinable hexagonal form. Some aspects of the hardening mechanism are discussed.

AB - Previously, it has been shown that the implantation of hexagonal boron nitride with light ions (e.g. He+, Li+, B+) produces a surface layer containing nanoparticles of the much harder cubic form, as revealed by Raman spectroscopy, X-ray diffraction and electron microscopy. The present study shows that the irradiated layer is measurably harder when interrogated by micro-indentation which probes a layer comparable to the ion range. The hardness value increases reproducibly with the ion fluence, confirming that the latter is responsible for it. There are possible implications for the surface hardening of BN components after they have been configured in the easily machinable hexagonal form. Some aspects of the hardening mechanism are discussed.

KW - Boron nitride

KW - Hardening

KW - Ion implantation

UR - http://www.scopus.com/inward/record.url?scp=85045451752&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2018.04.005

DO - 10.1016/j.surfcoat.2018.04.005

M3 - Article

VL - 355

SP - 61

EP - 64

JO - Surface and Coatings Technology

T2 - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

ER -