DOI: 10.1557/proc-354-363. Depth-Dependent Hardness Improvements in Ion Irradiated Polystyrene

Depth-Dependent Hardness Improvements in Ion Irradiated Polystyrene

10.1557/proc-354-363

Crossref journal-article

Springer Science and Business Media LLC

MRS Proceedings (297)

Abstract

AbstractPolystyrene (PS) was irradiated with 2 MeV He+ ions to a fluence of 3.3×1019 ions/m2. A cross-section of the irradiated layer was subjected to hardness measurements across the section using a nanoindentation technique. Results showed that hardness increased as a function of irradiation depth and showed a maximum value of 12 GPa at a depth of approximately 6.5 μπι, for a total ion penetration range of 9 μιη, as compared to a hardness of 0.45 GPa for unirradiated PS. The hardness variation with depth followed the trend for Linear Energy Transfer (LET) for ionization from the energetic ions to substrate atoms. This investigation showed for the first time how hardness varies as a function of depth for ion-irradiated polymers; this variation approximately follows the ionization LET profile, suggesting that cross-linking in the polymers could be proportional to ionization.

Bibliography

Rao, G. R., Riester, L., & Lee, E. H. (1994). Depth-Dependent Hardness Improvements in Ion Irradiated Polystyrene. MRS Proceedings, 354.

Authors 3

Gopal R. Rao (first)
Laura Riester (additional)
Eal H. Lee (additional)

References 8 Referenced 2

{'key': 'S1946427400421159_ref001', 'first-page': '301', 'volume-title': 'Ion beam effects in organic molecular solids and polymers, Ion Beam Modification of Insulators', 'author': 'Venkatesan', 'year': '1987'} / Ion beam effects in organic molecular solids and polymers, Ion Beam Modification of Insulators by Venkatesan (1987)
10.1557/JMR.1991.0610
10.1016/0043-1648(93)90074-V
{'key': 'S1946427400421159_ref004', 'first-page': '10', 'author': 'Rao', 'year': '1995', 'journal-title': 'Mater. Res.'} / Mater. Res. by Rao (1995)
10.1557/JMR.1993.0377
{'key': 'S1946427400421159_ref006', 'first-page': '243', 'volume': 'B43', 'author': 'Lewis', 'year': '1989', 'journal-title': 'Triple ion beam irradiation facility, Nucl. Instrum. Meth.'} / Triple ion beam irradiation facility, Nucl. Instrum. Meth. by Lewis (1989)
10.1557/JMR.1994.1043
{'key': 'S1946427400421159_ref008', 'first-page': '3326', 'article-title': 'Ion beam application for improved polymer properties', 'volume': 'B74', 'author': 'Lee', 'year': '1993', 'journal-title': 'Nucl. Instrum. Meth.'} / Nucl. Instrum. Meth. / Ion beam application for improved polymer properties by Lee (1993)

Dates

Type	When
Created	14 years, 4 months ago (April 5, 2011, 11:55 a.m.)
Deposited	4 years, 5 months ago (Feb. 24, 2021, 3:55 p.m.)
Indexed	3 years, 4 months ago (April 5, 2022, 6:44 a.m.)
Issued	31 years, 7 months ago (Jan. 1, 1994)
Published	31 years, 7 months ago (Jan. 1, 1994)
Published Online	14 years, 6 months ago (Feb. 21, 2011)
Published Print	31 years, 7 months ago (Jan. 1, 1994)

Funders 0

None

BibTeX

@article{Rao_1994, title={Depth-Dependent Hardness Improvements in Ion Irradiated Polystyrene}, volume={354}, ISSN={1946-4274}, url={http://dx.doi.org/10.1557/proc-354-363}, DOI={10.1557/proc-354-363}, journal={MRS Proceedings}, publisher={Springer Science and Business Media LLC}, author={Rao, Gopal R. and Riester, Laura and Lee, Eal H.}, year={1994} }

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