Tailored surface energy of stainless steel plate coupons to reduce the adhesion of aluminium silicate deposit

Ratale Matjie; Shuai Zhang; Qi Zhao; Nhlanganiso Mabuza; John R. Bunt

doi:10.1016/j.fuel.2016.04.105

Tailored surface energy of stainless steel plate coupons to reduce the adhesion of aluminium silicate deposit

Ratale Matjie (Lead / Corresponding author), Shuai Zhang (Lead / Corresponding author), Qi Zhao, Nhlanganiso Mabuza, John R. Bunt

School of Science and Engineering

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

40 Citations (Scopus)

475 Downloads (Pure)

Abstract

Fouling in heat exchangers not only reduces heat transfer performance significantly, but also causes considerable pressure drop, resulting in higher pumping requirements. It would be much more desirable if surfaces which are inherently less prone towards fouling could be developed. In this paper, autocatalytic Nickel-Phosphorus-Polytetrafluoroethylene (Ni-P-PTFE) composite coatings and modified diamond-like carbon (DLC) coatings were applied to the coupons of the 316L stainless steel plates. The effects of surface energies of the coatings on the adhesion of aluminium silicate fouling were investigated and the best surface energy for which the fouling adhesion is lowest was obtained. The experimental results show that the coating with the most favourable surface energy reduced the adhesion of aluminium silicate deposit by 97%, compared with uncoated stainless steel plate coupons. The anti-fouling mechanism of the coatings was explained with the extended Deryagin, Landau, Verwey and Overbeek (DLVO) theory.

Original language	English
Pages (from-to)	573-578
Number of pages	6
Journal	Fuel
Volume	181
Early online date	13 May 2016
DOIs	https://doi.org/10.1016/j.fuel.2016.04.105
Publication status	Published - 1 Oct 2016

Keywords

Aluminium silicate
DLC coating
Fouling
Ni-P-PTFE coating
Stainless steel
Surface energy

ASJC Scopus subject areas

Fuel Technology
Energy Engineering and Power Technology
General Chemical Engineering
Organic Chemistry

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10.1016/j.fuel.2016.04.105

Author Accepted Manuscript
© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Accepted author manuscript, 268 KBLicence: CC BY-NC-ND

Cite this

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title = "Tailored surface energy of stainless steel plate coupons to reduce the adhesion of aluminium silicate deposit",

abstract = "Fouling in heat exchangers not only reduces heat transfer performance significantly, but also causes considerable pressure drop, resulting in higher pumping requirements. It would be much more desirable if surfaces which are inherently less prone towards fouling could be developed. In this paper, autocatalytic Nickel-Phosphorus-Polytetrafluoroethylene (Ni-P-PTFE) composite coatings and modified diamond-like carbon (DLC) coatings were applied to the coupons of the 316L stainless steel plates. The effects of surface energies of the coatings on the adhesion of aluminium silicate fouling were investigated and the best surface energy for which the fouling adhesion is lowest was obtained. The experimental results show that the coating with the most favourable surface energy reduced the adhesion of aluminium silicate deposit by 97%, compared with uncoated stainless steel plate coupons. The anti-fouling mechanism of the coatings was explained with the extended Deryagin, Landau, Verwey and Overbeek (DLVO) theory.",

keywords = "Aluminium silicate, DLC coating, Fouling, Ni-P-PTFE coating, Stainless steel, Surface energy",

author = "Ratale Matjie and Shuai Zhang and Qi Zhao and Nhlanganiso Mabuza and Bunt, {John R.}",

note = "The information presented in this paper is based on the research financially supported by the South African Research Chairs Initiative (SARChI) of the Department of Science and Technology and National Research Foundation of South Africa (Coal Research Chair Grant No. 86880).",

year = "2016",

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doi = "10.1016/j.fuel.2016.04.105",

language = "English",

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AU - Matjie, Ratale

AU - Zhang, Shuai

AU - Zhao, Qi

AU - Mabuza, Nhlanganiso

AU - Bunt, John R.

N1 - The information presented in this paper is based on the research financially supported by the South African Research Chairs Initiative (SARChI) of the Department of Science and Technology and National Research Foundation of South Africa (Coal Research Chair Grant No. 86880).

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Fouling in heat exchangers not only reduces heat transfer performance significantly, but also causes considerable pressure drop, resulting in higher pumping requirements. It would be much more desirable if surfaces which are inherently less prone towards fouling could be developed. In this paper, autocatalytic Nickel-Phosphorus-Polytetrafluoroethylene (Ni-P-PTFE) composite coatings and modified diamond-like carbon (DLC) coatings were applied to the coupons of the 316L stainless steel plates. The effects of surface energies of the coatings on the adhesion of aluminium silicate fouling were investigated and the best surface energy for which the fouling adhesion is lowest was obtained. The experimental results show that the coating with the most favourable surface energy reduced the adhesion of aluminium silicate deposit by 97%, compared with uncoated stainless steel plate coupons. The anti-fouling mechanism of the coatings was explained with the extended Deryagin, Landau, Verwey and Overbeek (DLVO) theory.

AB - Fouling in heat exchangers not only reduces heat transfer performance significantly, but also causes considerable pressure drop, resulting in higher pumping requirements. It would be much more desirable if surfaces which are inherently less prone towards fouling could be developed. In this paper, autocatalytic Nickel-Phosphorus-Polytetrafluoroethylene (Ni-P-PTFE) composite coatings and modified diamond-like carbon (DLC) coatings were applied to the coupons of the 316L stainless steel plates. The effects of surface energies of the coatings on the adhesion of aluminium silicate fouling were investigated and the best surface energy for which the fouling adhesion is lowest was obtained. The experimental results show that the coating with the most favourable surface energy reduced the adhesion of aluminium silicate deposit by 97%, compared with uncoated stainless steel plate coupons. The anti-fouling mechanism of the coatings was explained with the extended Deryagin, Landau, Verwey and Overbeek (DLVO) theory.

KW - Aluminium silicate

KW - DLC coating

KW - Fouling

KW - Ni-P-PTFE coating

KW - Stainless steel

KW - Surface energy

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M3 - Article

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SN - 0016-2361

VL - 181

SP - 573

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JO - Fuel

JF - Fuel

ER -

Tailored surface energy of stainless steel plate coupons to reduce the adhesion of aluminium silicate deposit

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Keywords

ASJC Scopus subject areas

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Zhao, Qi

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Tailored surface energy of stainless steel plate coupons to reduce the adhesion of aluminium silicate deposit

Abstract

Keywords

ASJC Scopus subject areas

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Zhao, Qi

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