Tribological properties of N + ion implanted ultrananocrystalline diamond films

Kalpataru Panda; N. Kumar; B. K. Panigrahi; S. R. Polaki; B. Sundaravel; S. Dash; A. K. Tyagi; I. Nan Lin

doi:10.1016/j.triboint.2012.07.016

Tribological properties of N ⁺ ion implanted ultrananocrystalline diamond films

Kalpataru Panda
, N. Kumar^*
, B. K. Panigrahi
, S. R. Polaki
, B. Sundaravel
, S. Dash
, A. K. Tyagi
, I. Nan Lin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Tribological properties of ultra nanocrystalline diamond (UNCD) films have chemically been modified by N ⁺ ion implantation and subsequent annealing processes. Friction coefficient is found to be 0.15 in as-prepared film comparing to 0.09 and 0.05 in N ⁺ ion implanted and post-annealed films, respectively. Such a modification of friction coefficient is a characteristic of the transformation of sp ³ to graphitized/amorphized sp ² bonded carbon network. Transformation of sp ³ to sp ² carbon network causes conversion of higher surface energy state (hydrophilic) to lower (hydrophobic) one which results in ultra low friction coefficient. Graphitization/amorphization in wear track observed by micro Raman spectroscopy is found to be the prominent mechanism for the reduction in friction coefficient.

Original language	English
Pages (from-to)	124-136
Number of pages	13
Journal	Tribology International
Volume	57
DOIs	https://doi.org/10.1016/j.triboint.2012.07.016
Publication status	Published - 01-2013

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.triboint.2012.07.016

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title = "Tribological properties of N + ion implanted ultrananocrystalline diamond films",

abstract = "Tribological properties of ultra nanocrystalline diamond (UNCD) films have chemically been modified by N + ion implantation and subsequent annealing processes. Friction coefficient is found to be 0.15 in as-prepared film comparing to 0.09 and 0.05 in N + ion implanted and post-annealed films, respectively. Such a modification of friction coefficient is a characteristic of the transformation of sp 3 to graphitized/amorphized sp 2 bonded carbon network. Transformation of sp 3 to sp 2 carbon network causes conversion of higher surface energy state (hydrophilic) to lower (hydrophobic) one which results in ultra low friction coefficient. Graphitization/amorphization in wear track observed by micro Raman spectroscopy is found to be the prominent mechanism for the reduction in friction coefficient.",

author = "Kalpataru Panda and N. Kumar and Panigrahi, \{B. K.\} and Polaki, \{S. R.\} and B. Sundaravel and S. Dash and Tyagi, \{A. K.\} and Lin, \{I. Nan\}",

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doi = "10.1016/j.triboint.2012.07.016",

language = "English",

volume = "57",

pages = "124--136",

journal = "Tribology International",

issn = "0301-679X",

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TY - JOUR

T1 - Tribological properties of N + ion implanted ultrananocrystalline diamond films

AU - Panda, Kalpataru

AU - Kumar, N.

AU - Panigrahi, B. K.

AU - Polaki, S. R.

AU - Sundaravel, B.

AU - Dash, S.

AU - Tyagi, A. K.

AU - Lin, I. Nan

PY - 2013/1

Y1 - 2013/1

N2 - Tribological properties of ultra nanocrystalline diamond (UNCD) films have chemically been modified by N + ion implantation and subsequent annealing processes. Friction coefficient is found to be 0.15 in as-prepared film comparing to 0.09 and 0.05 in N + ion implanted and post-annealed films, respectively. Such a modification of friction coefficient is a characteristic of the transformation of sp 3 to graphitized/amorphized sp 2 bonded carbon network. Transformation of sp 3 to sp 2 carbon network causes conversion of higher surface energy state (hydrophilic) to lower (hydrophobic) one which results in ultra low friction coefficient. Graphitization/amorphization in wear track observed by micro Raman spectroscopy is found to be the prominent mechanism for the reduction in friction coefficient.

AB - Tribological properties of ultra nanocrystalline diamond (UNCD) films have chemically been modified by N + ion implantation and subsequent annealing processes. Friction coefficient is found to be 0.15 in as-prepared film comparing to 0.09 and 0.05 in N + ion implanted and post-annealed films, respectively. Such a modification of friction coefficient is a characteristic of the transformation of sp 3 to graphitized/amorphized sp 2 bonded carbon network. Transformation of sp 3 to sp 2 carbon network causes conversion of higher surface energy state (hydrophilic) to lower (hydrophobic) one which results in ultra low friction coefficient. Graphitization/amorphization in wear track observed by micro Raman spectroscopy is found to be the prominent mechanism for the reduction in friction coefficient.

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UR - https://www.scopus.com/pages/publications/84865052304#tab=citedBy

U2 - 10.1016/j.triboint.2012.07.016

DO - 10.1016/j.triboint.2012.07.016

M3 - Article

AN - SCOPUS:84865052304

SN - 0301-679X

VL - 57

SP - 124

EP - 136

JO - Tribology International

JF - Tribology International

ER -

Tribological properties of N ⁺ ion implanted ultrananocrystalline diamond films

Abstract

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