Surface pretreatment of austenitic stainless steel and copper by chemical, plasma electrolytic or CO2 cryoblasting techniques for sol-gel coating

Raisa Niemi (Corresponding Author), Amar Mahiout, Jarmo Siivinen, Riitta Mahlberg, Jari Likonen, Juha Nikkola, Juha Mannila, T. Vuorio, L.-S. Johansson, O. Söderberg, Simo-Pekka Hannula

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The surface pretreatments of the austenitic stainless steel and copper surfaces for the sol–gel coating were carried out by chemical, plasma electrolytic or CO2 cryoblasting techniques. With the austenitic stainless steel the smoothest surfaces were obtained with plasma electrolytic cleaning, after which the measured contact angles of water were clearly decreased revealing improved hydrophilicity. As well with the copper samples the smooth surface and improved hydrophilicity was obtained with the plasma electrolytic cleaning, but oxide layer formed to the copper surface immediately after the treatment. CO2 cryoblasting provided rough surface with wetting properties close to the original surface both for austenitic stainless steel and copper surfaces. CO2 cryoblasting provided best appearance for the copper surface because no oxidation happened with that treatment. XPS and SIMS studies showed that with the plasma electrolytic treatment the surface layer of the austenitic stainless steel enriched of chromium and the oxide layer formed on the surface was less than 10 nm thick. With the chemical cleaning and CO2 cryoblasting, the chromium enrichment to the stainless steel surface was less. However XPS and SIMS studies showed that chemical treatment provided thinner oxide layer to copper surface than plasma electrolytic treatment.
Original languageEnglish
Pages (from-to)2424-2431
Number of pages8
JournalSurface and Coatings Technology
Volume204
Issue number15
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Fingerprint

austenitic stainless steels
Austenitic stainless steel
pretreatment
Sol-gels
Copper
gels
Plasmas
coatings
copper
Coatings
Electrolytic cleaning
Hydrophilicity
Secondary ion mass spectrometry
cleaning
secondary ion mass spectrometry
oxides
Oxides
Chromium
X ray photoelectron spectroscopy
chemical cleaning

Keywords

  • CO2 cryoblasting
  • Pickling
  • Plasma electrolytic
  • Secondary ion mass spectrometry (SIMS)
  • X-ray photoelectron spectroscopy (XPS)

Cite this

Niemi, Raisa ; Mahiout, Amar ; Siivinen, Jarmo ; Mahlberg, Riitta ; Likonen, Jari ; Nikkola, Juha ; Mannila, Juha ; Vuorio, T. ; Johansson, L.-S. ; Söderberg, O. ; Hannula, Simo-Pekka. / Surface pretreatment of austenitic stainless steel and copper by chemical, plasma electrolytic or CO2 cryoblasting techniques for sol-gel coating. In: Surface and Coatings Technology. 2010 ; Vol. 204, No. 15. pp. 2424-2431.
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abstract = "The surface pretreatments of the austenitic stainless steel and copper surfaces for the sol–gel coating were carried out by chemical, plasma electrolytic or CO2 cryoblasting techniques. With the austenitic stainless steel the smoothest surfaces were obtained with plasma electrolytic cleaning, after which the measured contact angles of water were clearly decreased revealing improved hydrophilicity. As well with the copper samples the smooth surface and improved hydrophilicity was obtained with the plasma electrolytic cleaning, but oxide layer formed to the copper surface immediately after the treatment. CO2 cryoblasting provided rough surface with wetting properties close to the original surface both for austenitic stainless steel and copper surfaces. CO2 cryoblasting provided best appearance for the copper surface because no oxidation happened with that treatment. XPS and SIMS studies showed that with the plasma electrolytic treatment the surface layer of the austenitic stainless steel enriched of chromium and the oxide layer formed on the surface was less than 10 nm thick. With the chemical cleaning and CO2 cryoblasting, the chromium enrichment to the stainless steel surface was less. However XPS and SIMS studies showed that chemical treatment provided thinner oxide layer to copper surface than plasma electrolytic treatment.",
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Surface pretreatment of austenitic stainless steel and copper by chemical, plasma electrolytic or CO2 cryoblasting techniques for sol-gel coating. / Niemi, Raisa (Corresponding Author); Mahiout, Amar; Siivinen, Jarmo; Mahlberg, Riitta; Likonen, Jari; Nikkola, Juha; Mannila, Juha; Vuorio, T.; Johansson, L.-S.; Söderberg, O.; Hannula, Simo-Pekka.

In: Surface and Coatings Technology, Vol. 204, No. 15, 2010, p. 2424-2431.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Surface pretreatment of austenitic stainless steel and copper by chemical, plasma electrolytic or CO2 cryoblasting techniques for sol-gel coating

AU - Niemi, Raisa

AU - Mahiout, Amar

AU - Siivinen, Jarmo

AU - Mahlberg, Riitta

AU - Likonen, Jari

AU - Nikkola, Juha

AU - Mannila, Juha

AU - Vuorio, T.

AU - Johansson, L.-S.

AU - Söderberg, O.

AU - Hannula, Simo-Pekka

PY - 2010

Y1 - 2010

N2 - The surface pretreatments of the austenitic stainless steel and copper surfaces for the sol–gel coating were carried out by chemical, plasma electrolytic or CO2 cryoblasting techniques. With the austenitic stainless steel the smoothest surfaces were obtained with plasma electrolytic cleaning, after which the measured contact angles of water were clearly decreased revealing improved hydrophilicity. As well with the copper samples the smooth surface and improved hydrophilicity was obtained with the plasma electrolytic cleaning, but oxide layer formed to the copper surface immediately after the treatment. CO2 cryoblasting provided rough surface with wetting properties close to the original surface both for austenitic stainless steel and copper surfaces. CO2 cryoblasting provided best appearance for the copper surface because no oxidation happened with that treatment. XPS and SIMS studies showed that with the plasma electrolytic treatment the surface layer of the austenitic stainless steel enriched of chromium and the oxide layer formed on the surface was less than 10 nm thick. With the chemical cleaning and CO2 cryoblasting, the chromium enrichment to the stainless steel surface was less. However XPS and SIMS studies showed that chemical treatment provided thinner oxide layer to copper surface than plasma electrolytic treatment.

AB - The surface pretreatments of the austenitic stainless steel and copper surfaces for the sol–gel coating were carried out by chemical, plasma electrolytic or CO2 cryoblasting techniques. With the austenitic stainless steel the smoothest surfaces were obtained with plasma electrolytic cleaning, after which the measured contact angles of water were clearly decreased revealing improved hydrophilicity. As well with the copper samples the smooth surface and improved hydrophilicity was obtained with the plasma electrolytic cleaning, but oxide layer formed to the copper surface immediately after the treatment. CO2 cryoblasting provided rough surface with wetting properties close to the original surface both for austenitic stainless steel and copper surfaces. CO2 cryoblasting provided best appearance for the copper surface because no oxidation happened with that treatment. XPS and SIMS studies showed that with the plasma electrolytic treatment the surface layer of the austenitic stainless steel enriched of chromium and the oxide layer formed on the surface was less than 10 nm thick. With the chemical cleaning and CO2 cryoblasting, the chromium enrichment to the stainless steel surface was less. However XPS and SIMS studies showed that chemical treatment provided thinner oxide layer to copper surface than plasma electrolytic treatment.

KW - CO2 cryoblasting

KW - Pickling

KW - Plasma electrolytic

KW - Secondary ion mass spectrometry (SIMS)

KW - X-ray photoelectron spectroscopy (XPS)

U2 - 10.1016/j.surfcoat.2010.01.015

DO - 10.1016/j.surfcoat.2010.01.015

M3 - Article

VL - 204

SP - 2424

EP - 2431

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

IS - 15

ER -