In Situ Nanoscale Characterization of Water Penetration through Plasma Polymerized Coatings

Zhou, Yang; Josey, Brian; Anim-Danso, Emmanuel; Maranville, Brian; Karapetrova, Jenia; Jiang, Zhang; Zhou, Qixin; Dhinojwala, Ali; Foster, Mark D.

doi:10.1021/acs.langmuir.8b01646

Title: In Situ Nanoscale Characterization of Water Penetration through Plasma Polymerized Coatings

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Abstract

The search continues for means of making quick determinations of the efficacy of a coating for protecting a metal surface against corrosion. One means of reducing the time scale needed to differentiate the performance of different coatings is to draw from nanoscale measurements inferences about macroscopic behavior. Here we connect observations of the penetration of water into plasma polymerized (PP) protective coatings and the character of the interface between the coating and an oxide-coated aluminum substrate or model oxide-coated silicon substrate to the macroscopically observable corrosion for those systems. A plasma polymerized film from hexamethyldisiloxane (HMDSO) monomer is taken as illustrative of a hydrophobic coating, while a PP film from maleic anhydride (MA) is used as a characteristically hydrophilic coating. The neutron reflectivity (NR) of films on silicon oxide coated substrates shows that water moves more readily through the hydrophilic PPMA film. Off-specular X-ray scattering indicates the PPMA film on aluminum is less conformal with the substrate than is the PPHMDSO film. Measurements with infraredvisible sum frequency generation spectroscopy (SFG), which probes the chemical nature of the interface, make clear that the chemical interactions between coating and aluminum oxide are disrupted by interfacial water. With this water penetration and interfacemore »« less

Authors:

^[1]; Josey, Brian ^[2]; Anim-Danso, Emmanuel ^[1]; Maranville, Brian ^[3]; Karapetrova, Jenia ^[4]; Jiang, Zhang ^[4];

^[1];

^[1]

Univ. of Akron, OH (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)

Publication Date:: Mon Jul 23 00:00:00 EDT 2018

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: U.S. Department of Defense (DOD); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Institute of Standards and Technology (NIST)

OSTI Identifier:: 1476646

Alternate Identifier(s):: OSTI ID: 1526001

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Langmuir

Additional Journal Information:: Journal Volume: 34; Journal Issue: 33; Journal ID: ISSN 0743-7463

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Zhou, Yang, Josey, Brian, Anim-Danso, Emmanuel, Maranville, Brian, Karapetrova, Jenia, Jiang, Zhang, Zhou, Qixin, Dhinojwala, Ali, and Foster, Mark D. In Situ Nanoscale Characterization of Water Penetration through Plasma Polymerized Coatings.  United States: N. p., 2018. 
Web.  doi:10.1021/acs.langmuir.8b01646.

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                    Zhou, Yang, Josey, Brian, Anim-Danso, Emmanuel, Maranville, Brian, Karapetrova, Jenia, Jiang, Zhang, Zhou, Qixin, Dhinojwala, Ali, & Foster, Mark D. In Situ Nanoscale Characterization of Water Penetration through Plasma Polymerized Coatings.  United States.  https://doi.org/10.1021/acs.langmuir.8b01646

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                    Zhou, Yang, Josey, Brian, Anim-Danso, Emmanuel, Maranville, Brian, Karapetrova, Jenia, Jiang, Zhang, Zhou, Qixin, Dhinojwala, Ali, and Foster, Mark D. Mon .  
"In Situ Nanoscale Characterization of Water Penetration through Plasma Polymerized Coatings".  United States.  https://doi.org/10.1021/acs.langmuir.8b01646.  https://www.osti.gov/servlets/purl/1476646.

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@article{osti_1476646,

  title        = {In Situ Nanoscale Characterization of Water Penetration through Plasma Polymerized Coatings},

  author       = {Zhou, Yang and Josey, Brian and Anim-Danso, Emmanuel and Maranville, Brian and Karapetrova, Jenia and Jiang, Zhang and Zhou, Qixin and Dhinojwala, Ali and Foster, Mark D.},

  abstractNote = {The search continues for means of making quick determinations of the efficacy of a coating for protecting a metal surface against corrosion. One means of reducing the time scale needed to differentiate the performance of different coatings is to draw from nanoscale measurements inferences about macroscopic behavior. Here we connect observations of the penetration of water into plasma polymerized (PP) protective coatings and the character of the interface between the coating and an oxide-coated aluminum substrate or model oxide-coated silicon substrate to the macroscopically observable corrosion for those systems. A plasma polymerized film from hexamethyldisiloxane (HMDSO) monomer is taken as illustrative of a hydrophobic coating, while a PP film from maleic anhydride (MA) is used as a characteristically hydrophilic coating. The neutron reflectivity (NR) of films on silicon oxide coated substrates shows that water moves more readily through the hydrophilic PPMA film. Off-specular X-ray scattering indicates the PPMA film on aluminum is less conformal with the substrate than is the PPHMDSO film. Measurements with infraredvisible sum frequency generation spectroscopy (SFG), which probes the chemical nature of the interface, make clear that the chemical interactions between coating and aluminum oxide are disrupted by interfacial water. With this water penetration and interface disruption, macroscopic corrosion can occur much more rapidly. An Al panel coated with PP-MA corrodes after 1 day in salt spray, while a similarly thin (similar to 30 nm) PP-HMDSO coating protects an Al panel for a period on the order of one month.},

  doi          = {10.1021/acs.langmuir.8b01646},

  journal      = {Langmuir},

  number       = 33,

  volume       = 34,

  place        = {United States},

  year         = {Mon Jul 23 00:00:00 EDT 2018},

  month        = {Mon Jul 23 00:00:00 EDT 2018}

}

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