Nanoindentation-induced delamination of submicron polymeric coatings

Kebin Geng; Fuqian Yang; Thad Druffel; Eric A. Grulke

doi:10.1016/j.polymer.2006.07.075

Nanoindentation-induced delamination of submicron polymeric coatings

Kebin Geng
, Fuqian Yang
, Thad Druffel
, Eric A. Grulke

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

13 Scopus citations

Abstract

An elastic model is developed to estimate the interfacial strength between a submicron surface coating and a compliant substrate. The analysis uses a shear-lag model and assumes the plane-stress state in the surface coating. The critical indentation load for the indentation-induced delamination of the coating from the substrate increases with the third power of the indentation depth and is a linear function of the reciprocal of the coating thickness. The indentation-induced delamination of SR399 ultrathin surface coatings over acrylic substrate has been evaluated, using the nanonindentation technique for coating thicknesses of 47, 125, 220 and 3000 nm. For the submicron coatings, the dependence of the critical indentation load on the coating thickness supports the elastic model. The interfacial strength is found to be 46.9 MPa. In contrast, the polymeric coating of 3000 nm displays multiple "excursions" in the loading curve, and the critical indentation load is a linear function of the indentation depth.

Original language	English
Pages (from-to)	841-848
Number of pages	8
Journal	Polymer
Volume	48
Issue number	3
DOIs	https://doi.org/10.1016/j.polymer.2006.07.075
State	Published - Jan 26 2007

Bibliographical note

Funding Information:
FY is grateful for support from NSF grant CMS-0508989 and from General Motors Corporation. KG and EG are grateful for support from Optical Dynamic Corporation.

Funding

FY is grateful for support from NSF grant CMS-0508989 and from General Motors Corporation. KG and EG are grateful for support from Optical Dynamic Corporation.

Funders	Funder number
Optical Dynamic Corporation
National Science Foundation (NSF)	CMS-0508989
General Motors Corporation

Keywords

Interfacial strength
Nanoindentation
Ultrathin polymeric coating

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2006.07.075

Cite this

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title = "Nanoindentation-induced delamination of submicron polymeric coatings",

abstract = "An elastic model is developed to estimate the interfacial strength between a submicron surface coating and a compliant substrate. The analysis uses a shear-lag model and assumes the plane-stress state in the surface coating. The critical indentation load for the indentation-induced delamination of the coating from the substrate increases with the third power of the indentation depth and is a linear function of the reciprocal of the coating thickness. The indentation-induced delamination of SR399 ultrathin surface coatings over acrylic substrate has been evaluated, using the nanonindentation technique for coating thicknesses of 47, 125, 220 and 3000 nm. For the submicron coatings, the dependence of the critical indentation load on the coating thickness supports the elastic model. The interfacial strength is found to be 46.9 MPa. In contrast, the polymeric coating of 3000 nm displays multiple {"}excursions{"} in the loading curve, and the critical indentation load is a linear function of the indentation depth.",

keywords = "Interfacial strength, Nanoindentation, Ultrathin polymeric coating",

author = "Kebin Geng and Fuqian Yang and Thad Druffel and Grulke, \{Eric A.\}",

note = "Funding Information: FY is grateful for support from NSF grant CMS-0508989 and from General Motors Corporation. KG and EG are grateful for support from Optical Dynamic Corporation.",

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T1 - Nanoindentation-induced delamination of submicron polymeric coatings

AU - Geng, Kebin

AU - Yang, Fuqian

AU - Druffel, Thad

AU - Grulke, Eric A.

N1 - Funding Information: FY is grateful for support from NSF grant CMS-0508989 and from General Motors Corporation. KG and EG are grateful for support from Optical Dynamic Corporation.

PY - 2007/1/26

Y1 - 2007/1/26

N2 - An elastic model is developed to estimate the interfacial strength between a submicron surface coating and a compliant substrate. The analysis uses a shear-lag model and assumes the plane-stress state in the surface coating. The critical indentation load for the indentation-induced delamination of the coating from the substrate increases with the third power of the indentation depth and is a linear function of the reciprocal of the coating thickness. The indentation-induced delamination of SR399 ultrathin surface coatings over acrylic substrate has been evaluated, using the nanonindentation technique for coating thicknesses of 47, 125, 220 and 3000 nm. For the submicron coatings, the dependence of the critical indentation load on the coating thickness supports the elastic model. The interfacial strength is found to be 46.9 MPa. In contrast, the polymeric coating of 3000 nm displays multiple "excursions" in the loading curve, and the critical indentation load is a linear function of the indentation depth.

AB - An elastic model is developed to estimate the interfacial strength between a submicron surface coating and a compliant substrate. The analysis uses a shear-lag model and assumes the plane-stress state in the surface coating. The critical indentation load for the indentation-induced delamination of the coating from the substrate increases with the third power of the indentation depth and is a linear function of the reciprocal of the coating thickness. The indentation-induced delamination of SR399 ultrathin surface coatings over acrylic substrate has been evaluated, using the nanonindentation technique for coating thicknesses of 47, 125, 220 and 3000 nm. For the submicron coatings, the dependence of the critical indentation load on the coating thickness supports the elastic model. The interfacial strength is found to be 46.9 MPa. In contrast, the polymeric coating of 3000 nm displays multiple "excursions" in the loading curve, and the critical indentation load is a linear function of the indentation depth.

KW - Interfacial strength

KW - Nanoindentation

KW - Ultrathin polymeric coating

UR - https://www.scopus.com/pages/publications/33846216937

UR - https://www.scopus.com/pages/publications/33846216937#tab=citedBy

U2 - 10.1016/j.polymer.2006.07.075

DO - 10.1016/j.polymer.2006.07.075

M3 - Article

AN - SCOPUS:33846216937

SN - 0032-3861

VL - 48

SP - 841

EP - 848

JO - Polymer

JF - Polymer

IS - 3

ER -

Nanoindentation-induced delamination of submicron polymeric coatings

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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