Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings

Jarkko Kiilakoski; Jouni Tapani Puranen; Heli Koivuluoto; Petri Vuoristo

Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings

Jarkko Kiilakoski
, Jouni Tapani Puranen
, Heli Koivuluoto
, Petri Vuoristo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

Abstract

Enhancing mechanical and chemical properties of ceramic coatings is a perpetual objective in the thermal spraying community. Introducing either novel feedstock or thermal spray processes are the most plausible ways to achieve the improvements, such as improved corrosion resistance or damage tolerance. Properties such as quasi-plasticity and ultra-high yield strength of ceramics can be obtained by increasing the number of nanoscale features in the as-sprayed ceramic coating. Currently, thermal spraying using liquid feedstock can produce coatings with very fine microstructures either by utilizing submicron particles in the form of a suspension or through in-situ synthesis. The focus of this work was to obtain bimodal microstructure by using simultaneous powder-precursor HVOF spraying. Nanostructure was achieved from YSZ and ZrO2 solution-precursor and structure with microscale features from conventional Al2O3 spray powder. The microstructure, phase composition and cavitation erosion resistance of the coatings were compared to the conventional HVOF-sprayed Al2O3-coating.

Original language	English
Title of host publication	ITSC2018-Proceedings of the International Thermal Spray Conference
Editors	F. Azarmi, K. Balani, T. Eden, T. Hussain, Y.-C. Lau, H. Li, K. Shinoda
Place of Publication	USA
Publisher	ASM International, Materials Park, OH
Pages	385-289
ISBN (Electronic)	978-1-62708-160-3
Publication status	Published - 2018
Publication type	A4 Article in conference proceedings
Event	International Thermal Spray Conference and Exposition - Duration: 23 May 2018 → …

Publication series

Name	Proceedings of the International Thermal Spray Conference

Name
ISSN (Print)	1341-3074

Conference

Conference	International Thermal Spray Conference and Exposition
Period	23/05/18 → …

Publication forum classification

Publication forum level 1

Cite this

Kiilakoski, J., Puranen, J. T., Koivuluoto, H., & Vuoristo, P. (2018). Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings. In F. Azarmi, K. Balani, T. Eden, T. Hussain, Y.-C. Lau, H. Li, & K. Shinoda (Eds.), ITSC2018-Proceedings of the International Thermal Spray Conference (pp. 385-289). (Proceedings of the International Thermal Spray Conference). ASM International, Materials Park, OH.

Kiilakoski, Jarkko ; Puranen, Jouni Tapani ; Koivuluoto, Heli et al. / Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings. ITSC2018-Proceedings of the International Thermal Spray Conference. editor / F. Azarmi ; K. Balani ; T. Eden ; T. Hussain ; Y.-C. Lau ; H. Li ; K. Shinoda. USA : ASM International, Materials Park, OH, 2018. pp. 385-289 (Proceedings of the International Thermal Spray Conference).

@inproceedings{faf27c6911a545289654d1e6f0d4c3db,

title = "Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings",

abstract = "Enhancing mechanical and chemical properties of ceramic coatings is a perpetual objective in the thermal spraying community. Introducing either novel feedstock or thermal spray processes are the most plausible ways to achieve the improvements, such as improved corrosion resistance or damage tolerance. Properties such as quasi-plasticity and ultra-high yield strength of ceramics can be obtained by increasing the number of nanoscale features in the as-sprayed ceramic coating. Currently, thermal spraying using liquid feedstock can produce coatings with very fine microstructures either by utilizing submicron particles in the form of a suspension or through in-situ synthesis. The focus of this work was to obtain bimodal microstructure by using simultaneous powder-precursor HVOF spraying. Nanostructure was achieved from YSZ and ZrO2 solution-precursor and structure with microscale features from conventional Al2O3 spray powder. The microstructure, phase composition and cavitation erosion resistance of the coatings were compared to the conventional HVOF-sprayed Al2O3-coating.",

author = "Jarkko Kiilakoski and Puranen, \{Jouni Tapani\} and Heli Koivuluoto and Petri Vuoristo",

year = "2018",

language = "English",

series = "Proceedings of the International Thermal Spray Conference",

publisher = "ASM International, Materials Park, OH",

pages = "385--289",

editor = "F. Azarmi and K. Balani and T. Eden and T. Hussain and Y.-C. Lau and H. Li and K. Shinoda",

booktitle = "ITSC2018-Proceedings of the International Thermal Spray Conference",

note = "International Thermal Spray Conference and Exposition ; Conference date: 23-05-2018",

}

Kiilakoski, J, Puranen, JT, Koivuluoto, H & Vuoristo, P 2018, Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings. in F Azarmi, K Balani, T Eden, T Hussain, Y-C Lau, H Li & K Shinoda (eds), ITSC2018-Proceedings of the International Thermal Spray Conference. Proceedings of the International Thermal Spray Conference, ASM International, Materials Park, OH, USA, pp. 385-289, International Thermal Spray Conference and Exposition, 23/05/18.

Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings. / Kiilakoski, Jarkko; Puranen, Jouni Tapani; Koivuluoto, Heli et al.
ITSC2018-Proceedings of the International Thermal Spray Conference. ed. / F. Azarmi; K. Balani; T. Eden; T. Hussain; Y.-C. Lau; H. Li; K. Shinoda. USA: ASM International, Materials Park, OH, 2018. p. 385-289 (Proceedings of the International Thermal Spray Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings

AU - Kiilakoski, Jarkko

AU - Puranen, Jouni Tapani

AU - Koivuluoto, Heli

AU - Vuoristo, Petri

PY - 2018

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N2 - Enhancing mechanical and chemical properties of ceramic coatings is a perpetual objective in the thermal spraying community. Introducing either novel feedstock or thermal spray processes are the most plausible ways to achieve the improvements, such as improved corrosion resistance or damage tolerance. Properties such as quasi-plasticity and ultra-high yield strength of ceramics can be obtained by increasing the number of nanoscale features in the as-sprayed ceramic coating. Currently, thermal spraying using liquid feedstock can produce coatings with very fine microstructures either by utilizing submicron particles in the form of a suspension or through in-situ synthesis. The focus of this work was to obtain bimodal microstructure by using simultaneous powder-precursor HVOF spraying. Nanostructure was achieved from YSZ and ZrO2 solution-precursor and structure with microscale features from conventional Al2O3 spray powder. The microstructure, phase composition and cavitation erosion resistance of the coatings were compared to the conventional HVOF-sprayed Al2O3-coating.

AB - Enhancing mechanical and chemical properties of ceramic coatings is a perpetual objective in the thermal spraying community. Introducing either novel feedstock or thermal spray processes are the most plausible ways to achieve the improvements, such as improved corrosion resistance or damage tolerance. Properties such as quasi-plasticity and ultra-high yield strength of ceramics can be obtained by increasing the number of nanoscale features in the as-sprayed ceramic coating. Currently, thermal spraying using liquid feedstock can produce coatings with very fine microstructures either by utilizing submicron particles in the form of a suspension or through in-situ synthesis. The focus of this work was to obtain bimodal microstructure by using simultaneous powder-precursor HVOF spraying. Nanostructure was achieved from YSZ and ZrO2 solution-precursor and structure with microscale features from conventional Al2O3 spray powder. The microstructure, phase composition and cavitation erosion resistance of the coatings were compared to the conventional HVOF-sprayed Al2O3-coating.

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M3 - Conference contribution

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SP - 385

EP - 289

BT - ITSC2018-Proceedings of the International Thermal Spray Conference

A2 - Azarmi, F.

A2 - Balani, K.

A2 - Eden, T.

A2 - Hussain, T.

A2 - Lau, Y.-C.

A2 - Li, H.

A2 - Shinoda, K.

PB - ASM International, Materials Park, OH

CY - USA

T2 - International Thermal Spray Conference and Exposition

Y2 - 23 May 2018

ER -

Kiilakoski J, Puranen JT, Koivuluoto H, Vuoristo P. Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings. In Azarmi F, Balani K, Eden T, Hussain T, Lau YC, Li H, Shinoda K, editors, ITSC2018-Proceedings of the International Thermal Spray Conference. USA: ASM International, Materials Park, OH. 2018. p. 385-289. (Proceedings of the International Thermal Spray Conference).

Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings

Abstract

Publication series

Conference

Publication forum classification

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Tampere Microscopy Center

Cite this

Characterization of powder-precursor HVOF-sprayed Al2O3-ZrO2 coatings

Abstract

Publication series

Conference

Publication forum classification

Other files and links

Fingerprint

Equipment

Tampere Microscopy Center

Cite this