Graphite Surface Microhardening with Femtosecond Laser Pulses

Graphite Surface Microhardening with Femtosecond Laser Pulses ISSN 0018-151X, High Temperature © Pleiades Publishing, Ltd., 2018. a, a a a S. A. Romashevskiy *, A. A. Pronkin , S. I. Ashitkov , and M. B. Agranat Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412 Russia *e-mail: sa.romashevskiy@gmail.com Received February 12, 2018 Abstract—The effects of direct femtosecond laser processing of a polycrystalline graphite surface are experi- 17 2 mentally investigated. The functional graphite surfaces are fabricated at laser intensity of ~10 W/cm in va- cuum and then thoroughly analyzed by means of Raman spectroscopy and nanoindentation test. The mea- sured Raman spectra at 257 nm show presence of an amorphous carbon phase containing sp hybridized car- bon atoms and a discontinuous nanocrystalline diamond film, while the results of microhardness measure- ments demonstrate a sixteen-fold increase in microhardness as compared to the unirradiated graphite surface. The modulus of elasticity is found to increase nearly by 3.4 times. DOI: 10.1134/S0018151X180 40235 INTRODUCTION coatings for optical windows, magnetic storage disks, car parts, and biomedical devices [12, 13]. Coating the Surface engineering underpins major industry sec- implants and prostheses (hip and knee joints) with tors including aerospace, automotive, construction, protective biocompatible DLC f ilms may signif icantly power http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png High Temperature Springer Journals

Graphite Surface Microhardening with Femtosecond Laser Pulses

Loading next page...
 
/lp/springer_journal/graphite-surface-microhardening-with-femtosecond-laser-pulses-20nQ35diuS
Publisher
Pleiades Publishing
Copyright
Copyright © 2018 by Pleiades Publishing, Ltd.
Subject
Physics; Atoms and Molecules in Strong Fields, Laser Matter Interaction; Materials Science, general; Classical and Continuum Physics; Physical Chemistry; Industrial Chemistry/Chemical Engineering
ISSN
0018-151X
eISSN
1608-3156
D.O.I.
10.1134/S0018151X18040235
Publisher site
See Article on Publisher Site

Abstract

ISSN 0018-151X, High Temperature © Pleiades Publishing, Ltd., 2018. a, a a a S. A. Romashevskiy *, A. A. Pronkin , S. I. Ashitkov , and M. B. Agranat Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412 Russia *e-mail: sa.romashevskiy@gmail.com Received February 12, 2018 Abstract—The effects of direct femtosecond laser processing of a polycrystalline graphite surface are experi- 17 2 mentally investigated. The functional graphite surfaces are fabricated at laser intensity of ~10 W/cm in va- cuum and then thoroughly analyzed by means of Raman spectroscopy and nanoindentation test. The mea- sured Raman spectra at 257 nm show presence of an amorphous carbon phase containing sp hybridized car- bon atoms and a discontinuous nanocrystalline diamond film, while the results of microhardness measure- ments demonstrate a sixteen-fold increase in microhardness as compared to the unirradiated graphite surface. The modulus of elasticity is found to increase nearly by 3.4 times. DOI: 10.1134/S0018151X180 40235 INTRODUCTION coatings for optical windows, magnetic storage disks, car parts, and biomedical devices [12, 13]. Coating the Surface engineering underpins major industry sec- implants and prostheses (hip and knee joints) with tors including aerospace, automotive, construction, protective biocompatible DLC f ilms may signif icantly power

Journal

High TemperatureSpringer Journals

Published: Jun 2, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off