A sustainable two-layer lignin-anodized composite coating for the corrosion protection of high-strength low-alloy steel

Arman Dastpak; Pyry Mikko Hannula; Mari Lundström; Benjamin P. Wilson

doi:10.1016/j.porgcoat.2020.105866

A sustainable two-layer lignin-anodized composite coating for the corrosion protection of high-strength low-alloy steel

Arman Dastpak, Pyry Mikko Hannula, Mari Lundström, Benjamin P. Wilson^*

^*Corresponding author for this work

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

21 Citations (Scopus)

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Abstract

In this study, plasticized kraft lignin was used to prepare anti-corrosive coatings on steel, which was galvanostatically anodized (80 °C, 25 wt.% NaOH) by utilizing three different current density values (24, 50 and 120 mA/cm²). It was shown that the anodization affects not only the properties of anodic coatings but also their interaction with lignin coatings. A combination of pull-off adhesion measurements with linear sweep voltammetry (LSV) demonstrated an enhanced adhesion strength of plasticized lignin coatings (4.32 MPa on anodized surface vs. 2.38 MPa on bare steel) and decreased corrosion current density from 15 μA/cm² (bare steel) up to ca. 0.5 μA/cm² for anodized and lignin coated steel.

Original language	English
Article number	105866
Number of pages	9
Journal	PROGRESS IN ORGANIC COATINGS
Volume	148
DOIs	https://doi.org/10.1016/j.porgcoat.2020.105866
Publication status	Published - Nov 2020
MoE publication type	A1 Journal article-refereed

Keywords

Biopolymer
Corrosion protection
Organic coating
Oxide coating
Steel

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10.1016/j.porgcoat.2020.105866Licence: CC BY-NC-ND

1-s2.0-S0300944020306172-mainFinal published version, 3.03 MBLicence: CC BY-NC-ND

Cite this

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title = "A sustainable two-layer lignin-anodized composite coating for the corrosion protection of high-strength low-alloy steel",

abstract = "In this study, plasticized kraft lignin was used to prepare anti-corrosive coatings on steel, which was galvanostatically anodized (80 °C, 25 wt.% NaOH) by utilizing three different current density values (24, 50 and 120 mA/cm2). It was shown that the anodization affects not only the properties of anodic coatings but also their interaction with lignin coatings. A combination of pull-off adhesion measurements with linear sweep voltammetry (LSV) demonstrated an enhanced adhesion strength of plasticized lignin coatings (4.32 MPa on anodized surface vs. 2.38 MPa on bare steel) and decreased corrosion current density from 15 μA/cm2 (bare steel) up to ca. 0.5 μA/cm2 for anodized and lignin coated steel.",

keywords = "Biopolymer, Corrosion protection, Organic coating, Oxide coating, Steel",

author = "Arman Dastpak and Hannula, {Pyry Mikko} and Mari Lundstr{\"o}m and Wilson, {Benjamin P.}",

year = "2020",

month = nov,

doi = "10.1016/j.porgcoat.2020.105866",

language = "English",

volume = "148",

journal = "PROGRESS IN ORGANIC COATINGS",

issn = "0300-9440",

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T1 - A sustainable two-layer lignin-anodized composite coating for the corrosion protection of high-strength low-alloy steel

AU - Dastpak, Arman

AU - Hannula, Pyry Mikko

AU - Lundström, Mari

AU - Wilson, Benjamin P.

PY - 2020/11

Y1 - 2020/11

N2 - In this study, plasticized kraft lignin was used to prepare anti-corrosive coatings on steel, which was galvanostatically anodized (80 °C, 25 wt.% NaOH) by utilizing three different current density values (24, 50 and 120 mA/cm2). It was shown that the anodization affects not only the properties of anodic coatings but also their interaction with lignin coatings. A combination of pull-off adhesion measurements with linear sweep voltammetry (LSV) demonstrated an enhanced adhesion strength of plasticized lignin coatings (4.32 MPa on anodized surface vs. 2.38 MPa on bare steel) and decreased corrosion current density from 15 μA/cm2 (bare steel) up to ca. 0.5 μA/cm2 for anodized and lignin coated steel.

AB - In this study, plasticized kraft lignin was used to prepare anti-corrosive coatings on steel, which was galvanostatically anodized (80 °C, 25 wt.% NaOH) by utilizing three different current density values (24, 50 and 120 mA/cm2). It was shown that the anodization affects not only the properties of anodic coatings but also their interaction with lignin coatings. A combination of pull-off adhesion measurements with linear sweep voltammetry (LSV) demonstrated an enhanced adhesion strength of plasticized lignin coatings (4.32 MPa on anodized surface vs. 2.38 MPa on bare steel) and decreased corrosion current density from 15 μA/cm2 (bare steel) up to ca. 0.5 μA/cm2 for anodized and lignin coated steel.

KW - Biopolymer

KW - Corrosion protection

KW - Organic coating

KW - Oxide coating

KW - Steel

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A sustainable two-layer lignin-anodized composite coating for the corrosion protection of high-strength low-alloy steel

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

FinnCERES: Competence Center for the Materials Bioeconomy: A Flagship for our Sustainable Future

NoWASTE: Novel Precious Metal Recovery from Waste Streams

OtaNano - Nanomicroscopy Center

Raw Materials Research Infrastructure

Biopolymeric Anticorrosion Coatings from Cellulose Nanofibrils and Colloidal Lignin Particles

Cite this

A sustainable two-layer lignin-anodized composite coating for the corrosion protection of high-strength low-alloy steel

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Projects

FinnCERES: Competence Center for the Materials Bioeconomy: A Flagship for our Sustainable Future

NoWASTE: Novel Precious Metal Recovery from Waste Streams

Equipment

OtaNano - Nanomicroscopy Center

Raw Materials Research Infrastructure

Research output

Biopolymeric Anticorrosion Coatings from Cellulose Nanofibrils and Colloidal Lignin Particles

Cite this