Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings

Erja Turunen; Tommi Varis; Tom E. Gustafsson; Jari Keskinen; Pertti Lintunen; Pekka Lintula; Simo-Pekka Hannula

Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings

Erja Turunen, Tommi Varis, Tom E. Gustafsson, Jari Keskinen, Pertti Lintunen, Pekka Lintula, Simo-Pekka Hannula

BA20 Management and support

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

Abstract

HVOF-sprayed ceramic coatings can be considered as potential candidates for applications where good chemical and corrosion resistance of ceramics is needed.Due to the less porous structure of the HVOF-sprayed coating as compared to the plasma sprayed one, the protection capability of the coating is increased.Despite the dense structure, the coating properties are inferior as compared to bulk ceramics because of pores and microcracks, which influence adversely the coating properties (i.e., toughness, hardness and wear resistance).Improved mechanical properties have widely been demonstrated for bulk nanocrystalline materials.Especially with ceramic materials the decreasing of grain size has been found to be favorable.Dense nanostructured ceramic coatings containing various nanostructured particles were manufactured by HVOF-spraying by using an HV-2000 spray gun.Mechanical properties, especially elastic modulus and relative fracture toughness, were studied.The techniques used were instrumented nanoindentation and KIC evaluation.As a result coatings with nearly 100% improvements in relative fracture toughness were produced for nanoreinforced composite coating.

Original language	English
Title of host publication	Applied Material Research at VTT
Subtitle of host publication	Symposium on Applied Materials
Place of Publication	Espoo
Publisher	VTT Technical Research Centre of Finland
Pages	188-199
ISBN (Electronic)	951-38-6312-3
ISBN (Print)	951-38-6311-5
Publication status	Published - 2006
MoE publication type	B3 Non-refereed article in conference proceedings
Event	Internal Symposium on Applied Materials - Espoo, Finland Duration: 8 Jun 2006 → 8 Jun 2006

Publication series

Series	VTT Symposium
Number	244
ISSN	0357-9387

Conference

Conference	Internal Symposium on Applied Materials
Country	Finland
City	Espoo
Period	8/06/06 → 8/06/06

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Cite this

Turunen, E., Varis, T., Gustafsson, T. E., Keskinen, J., Lintunen, P., Lintula, P., & Hannula, S-P. (2006). Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings. In Applied Material Research at VTT: Symposium on Applied Materials (pp. 188-199). VTT Technical Research Centre of Finland. VTT Symposium, No. 244 http://www.vtt.fi/inf/pdf/symposiums/2006/S244.pdf

Turunen, Erja ; Varis, Tommi ; Gustafsson, Tom E. ; Keskinen, Jari ; Lintunen, Pertti ; Lintula, Pekka ; Hannula, Simo-Pekka. / Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings. Applied Material Research at VTT: Symposium on Applied Materials. Espoo : VTT Technical Research Centre of Finland, 2006. pp. 188-199 (VTT Symposium; No. 244).

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title = "Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings",

abstract = "HVOF-sprayed ceramic coatings can be considered as potential candidates for applications where good chemical and corrosion resistance of ceramics is needed.Due to the less porous structure of the HVOF-sprayed coating as compared to the plasma sprayed one, the protection capability of the coating is increased.Despite the dense structure, the coating properties are inferior as compared to bulk ceramics because of pores and microcracks, which influence adversely the coating properties (i.e., toughness, hardness and wear resistance).Improved mechanical properties have widely been demonstrated for bulk nanocrystalline materials.Especially with ceramic materials the decreasing of grain size has been found to be favorable.Dense nanostructured ceramic coatings containing various nanostructured particles were manufactured by HVOF-spraying by using an HV-2000 spray gun.Mechanical properties, especially elastic modulus and relative fracture toughness, were studied.The techniques used were instrumented nanoindentation and KIC evaluation.As a result coatings with nearly 100% improvements in relative fracture toughness were produced for nanoreinforced composite coating.",

author = "Erja Turunen and Tommi Varis and Gustafsson, {Tom E.} and Jari Keskinen and Pertti Lintunen and Pekka Lintula and Simo-Pekka Hannula",

year = "2006",

language = "English",

isbn = "951-38-6311-5",

series = "VTT Symposium",

publisher = "VTT Technical Research Centre of Finland",

number = "244",

pages = "188--199",

booktitle = "Applied Material Research at VTT",

address = "Finland",

note = "Internal Symposium on Applied Materials ; Conference date: 08-06-2006 Through 08-06-2006",

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Turunen, E, Varis, T, Gustafsson, TE, Keskinen, J, Lintunen, P, Lintula, P & Hannula, S-P 2006, Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings. in Applied Material Research at VTT: Symposium on Applied Materials. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 244, pp. 188-199, Internal Symposium on Applied Materials, Espoo, Finland, 8/06/06. <http://www.vtt.fi/inf/pdf/symposiums/2006/S244.pdf>

Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings. / Turunen, Erja; Varis, Tommi; Gustafsson, Tom E.; Keskinen, Jari; Lintunen, Pertti; Lintula, Pekka; Hannula, Simo-Pekka.

Applied Material Research at VTT: Symposium on Applied Materials. Espoo : VTT Technical Research Centre of Finland, 2006. p. 188-199 (VTT Symposium; No. 244).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

TY - GEN

T1 - Improved mechanical properties by nanoreinforced HVOF-sprayed ceramic composite coatings

AU - Turunen, Erja

AU - Varis, Tommi

AU - Gustafsson, Tom E.

AU - Keskinen, Jari

AU - Lintunen, Pertti

AU - Lintula, Pekka

AU - Hannula, Simo-Pekka

PY - 2006

Y1 - 2006

N2 - HVOF-sprayed ceramic coatings can be considered as potential candidates for applications where good chemical and corrosion resistance of ceramics is needed.Due to the less porous structure of the HVOF-sprayed coating as compared to the plasma sprayed one, the protection capability of the coating is increased.Despite the dense structure, the coating properties are inferior as compared to bulk ceramics because of pores and microcracks, which influence adversely the coating properties (i.e., toughness, hardness and wear resistance).Improved mechanical properties have widely been demonstrated for bulk nanocrystalline materials.Especially with ceramic materials the decreasing of grain size has been found to be favorable.Dense nanostructured ceramic coatings containing various nanostructured particles were manufactured by HVOF-spraying by using an HV-2000 spray gun.Mechanical properties, especially elastic modulus and relative fracture toughness, were studied.The techniques used were instrumented nanoindentation and KIC evaluation.As a result coatings with nearly 100% improvements in relative fracture toughness were produced for nanoreinforced composite coating.

AB - HVOF-sprayed ceramic coatings can be considered as potential candidates for applications where good chemical and corrosion resistance of ceramics is needed.Due to the less porous structure of the HVOF-sprayed coating as compared to the plasma sprayed one, the protection capability of the coating is increased.Despite the dense structure, the coating properties are inferior as compared to bulk ceramics because of pores and microcracks, which influence adversely the coating properties (i.e., toughness, hardness and wear resistance).Improved mechanical properties have widely been demonstrated for bulk nanocrystalline materials.Especially with ceramic materials the decreasing of grain size has been found to be favorable.Dense nanostructured ceramic coatings containing various nanostructured particles were manufactured by HVOF-spraying by using an HV-2000 spray gun.Mechanical properties, especially elastic modulus and relative fracture toughness, were studied.The techniques used were instrumented nanoindentation and KIC evaluation.As a result coatings with nearly 100% improvements in relative fracture toughness were produced for nanoreinforced composite coating.

M3 - Conference article in proceedings

SN - 951-38-6311-5

T3 - VTT Symposium

SP - 188

EP - 199

BT - Applied Material Research at VTT

PB - VTT Technical Research Centre of Finland

CY - Espoo

T2 - Internal Symposium on Applied Materials

Y2 - 8 June 2006 through 8 June 2006

ER -

Access to Document

http://www.vtt.fi/inf/pdf/symposiums/2006/S244.pdf