TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions

Tutkimustuotosvertaisarvioitu

Standard

Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions. / Vuoristo, Petri; Varis, Tommi; Meschini, Damiano; Bolelli, Giovanni; Lusvarghi, Luca.

International Thermal Spray Conference and Exposition, ITSC 2019: New Waves of Thermal Spray Technology for Sustainable Growth. toim. / F. Azarmi; Y. Lau; J. Veilleux; C. Widener; F. Toma; H. Koivuluoto; K. Balani; H. Li; K. Shinoda. ASM International, 2019. s. 923-930 (Proceedings of the International Thermal Spray Conference).

Tutkimustuotosvertaisarvioitu

Harvard

Vuoristo, P, Varis, T, Meschini, D, Bolelli, G & Lusvarghi, L 2019, Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions. julkaisussa F Azarmi, Y Lau, J Veilleux, C Widener, F Toma, H Koivuluoto, K Balani, H Li & K Shinoda (toim), International Thermal Spray Conference and Exposition, ITSC 2019: New Waves of Thermal Spray Technology for Sustainable Growth. Proceedings of the International Thermal Spray Conference, ASM International, Sivut 923-930, INTERNATIONAL THERMAL SPRAY CONFERENCE, 1/01/00.

APA

Vuoristo, P., Varis, T., Meschini, D., Bolelli, G., & Lusvarghi, L. (2019). Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions. teoksessa F. Azarmi, Y. Lau, J. Veilleux, C. Widener, F. Toma, H. Koivuluoto, K. Balani, H. Li, ... K. Shinoda (Toimittajat), International Thermal Spray Conference and Exposition, ITSC 2019: New Waves of Thermal Spray Technology for Sustainable Growth (Sivut 923-930). (Proceedings of the International Thermal Spray Conference). ASM International.

Vancouver

Vuoristo P, Varis T, Meschini D, Bolelli G, Lusvarghi L. Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions. julkaisussa Azarmi F, Lau Y, Veilleux J, Widener C, Toma F, Koivuluoto H, Balani K, Li H, Shinoda K, toimittajat, International Thermal Spray Conference and Exposition, ITSC 2019: New Waves of Thermal Spray Technology for Sustainable Growth. ASM International. 2019. s. 923-930. (Proceedings of the International Thermal Spray Conference).

Author

Vuoristo, Petri ; Varis, Tommi ; Meschini, Damiano ; Bolelli, Giovanni ; Lusvarghi, Luca. / Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions. International Thermal Spray Conference and Exposition, ITSC 2019: New Waves of Thermal Spray Technology for Sustainable Growth. Toimittaja / F. Azarmi ; Y. Lau ; J. Veilleux ; C. Widener ; F. Toma ; H. Koivuluoto ; K. Balani ; H. Li ; K. Shinoda. ASM International, 2019. Sivut 923-930 (Proceedings of the International Thermal Spray Conference).

Bibtex - Lataa

@inproceedings{2bf96c849d494065879302b04d949042,
title = "Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions",
abstract = "Plasma sprayed chromia coatings are known to have excellent corrosion and wear properties in highly acidic conditions at ambient and elevated temperatures. In applications requiring extremely good corrosion resistance, the whole components are usually made of a corrosion resistant alloy. For increased adhesion of the ceramic coating to the corrosion resistant substrate material, thermally sprayed metallic bond coatings are used. It is well known that the corrosion environment in such bond coatings between the ceramic top coating and the substrate can be extremely difficult due to the absence of dissolved oxygen, increased concentration of the corrosive electrolytes under the top coating, and galvanic and crevice corrosion mechanisms inside the coating structure. When bond coatings are used, it is of high importance to select the bond layer chemistry and method of production so that the bond coating can survive in such harsh conditions. In the present study, four different bond coatings were studied to evaluate their performance in corrosive acidic electrolytes. The coatings studied were HVOF sprayed Ni-20Cr, Hastelloy C-276 and Ultimet alloy coatings, and plasma sprayed tantalum coating. The substrate material was a solid Hastelloy C-276 metal alloy. The top coating used was plasma sprayed Cr2O3. Corrosion properties of various coating types were studied by electrochemical measurements in sulfuric acid solutions with various concentrations at RT, and by immersion tests at RT and at the temperature of 60°C. The coating microstructures were studied before and after the corrosion tests. The results showed that HVOF sprayed Ni-20Cr and Ultimet alloy coatings were significantly attacked by the sulfuric acid electrolyte, whereas HVOF sprayed Hastelloy C-276 and plasma sprayed Ta coatings performed significantly better.",
author = "Petri Vuoristo and Tommi Varis and Damiano Meschini and Giovanni Bolelli and Luca Lusvarghi",
year = "2019",
month = "5",
language = "English",
series = "Proceedings of the International Thermal Spray Conference",
publisher = "ASM International",
pages = "923--930",
editor = "F. Azarmi and Y. Lau and J. Veilleux and C. Widener and F. Toma and H. Koivuluoto and K. Balani and H. Li and K. Shinoda",
booktitle = "International Thermal Spray Conference and Exposition, ITSC 2019",
address = "United States",

}

RIS (suitable for import to EndNote) - Lataa

TY - GEN

T1 - Corrosion properties of thermally sprayed bond coatings under plasma sprayed chromia coating in sulfuric acid solutions

AU - Vuoristo, Petri

AU - Varis, Tommi

AU - Meschini, Damiano

AU - Bolelli, Giovanni

AU - Lusvarghi, Luca

PY - 2019/5

Y1 - 2019/5

N2 - Plasma sprayed chromia coatings are known to have excellent corrosion and wear properties in highly acidic conditions at ambient and elevated temperatures. In applications requiring extremely good corrosion resistance, the whole components are usually made of a corrosion resistant alloy. For increased adhesion of the ceramic coating to the corrosion resistant substrate material, thermally sprayed metallic bond coatings are used. It is well known that the corrosion environment in such bond coatings between the ceramic top coating and the substrate can be extremely difficult due to the absence of dissolved oxygen, increased concentration of the corrosive electrolytes under the top coating, and galvanic and crevice corrosion mechanisms inside the coating structure. When bond coatings are used, it is of high importance to select the bond layer chemistry and method of production so that the bond coating can survive in such harsh conditions. In the present study, four different bond coatings were studied to evaluate their performance in corrosive acidic electrolytes. The coatings studied were HVOF sprayed Ni-20Cr, Hastelloy C-276 and Ultimet alloy coatings, and plasma sprayed tantalum coating. The substrate material was a solid Hastelloy C-276 metal alloy. The top coating used was plasma sprayed Cr2O3. Corrosion properties of various coating types were studied by electrochemical measurements in sulfuric acid solutions with various concentrations at RT, and by immersion tests at RT and at the temperature of 60°C. The coating microstructures were studied before and after the corrosion tests. The results showed that HVOF sprayed Ni-20Cr and Ultimet alloy coatings were significantly attacked by the sulfuric acid electrolyte, whereas HVOF sprayed Hastelloy C-276 and plasma sprayed Ta coatings performed significantly better.

AB - Plasma sprayed chromia coatings are known to have excellent corrosion and wear properties in highly acidic conditions at ambient and elevated temperatures. In applications requiring extremely good corrosion resistance, the whole components are usually made of a corrosion resistant alloy. For increased adhesion of the ceramic coating to the corrosion resistant substrate material, thermally sprayed metallic bond coatings are used. It is well known that the corrosion environment in such bond coatings between the ceramic top coating and the substrate can be extremely difficult due to the absence of dissolved oxygen, increased concentration of the corrosive electrolytes under the top coating, and galvanic and crevice corrosion mechanisms inside the coating structure. When bond coatings are used, it is of high importance to select the bond layer chemistry and method of production so that the bond coating can survive in such harsh conditions. In the present study, four different bond coatings were studied to evaluate their performance in corrosive acidic electrolytes. The coatings studied were HVOF sprayed Ni-20Cr, Hastelloy C-276 and Ultimet alloy coatings, and plasma sprayed tantalum coating. The substrate material was a solid Hastelloy C-276 metal alloy. The top coating used was plasma sprayed Cr2O3. Corrosion properties of various coating types were studied by electrochemical measurements in sulfuric acid solutions with various concentrations at RT, and by immersion tests at RT and at the temperature of 60°C. The coating microstructures were studied before and after the corrosion tests. The results showed that HVOF sprayed Ni-20Cr and Ultimet alloy coatings were significantly attacked by the sulfuric acid electrolyte, whereas HVOF sprayed Hastelloy C-276 and plasma sprayed Ta coatings performed significantly better.

UR - http://www.scopus.com/inward/record.url?scp=85073880821&partnerID=8YFLogxK

M3 - Conference contribution

T3 - Proceedings of the International Thermal Spray Conference

SP - 923

EP - 930

BT - International Thermal Spray Conference and Exposition, ITSC 2019

A2 - Azarmi, F.

A2 - Lau, Y.

A2 - Veilleux, J.

A2 - Widener, C.

A2 - Toma, F.

A2 - Koivuluoto, H.

A2 - Balani, K.

A2 - Li, H.

A2 - Shinoda, K.

PB - ASM International

ER -