Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application

Maria Oksa; Tommi Varis; Tomi Suhonen; Mika Jokipii

Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application

Maria Oksa, Tommi Varis, Tomi Suhonen, Mika Jokipii

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

Abstract

Alloys with high amount of chromium are used for protection of power plant boilers against the high temperature corrosion, especially heat exchanger surfaces, such as superheaters. Thermal spray coatings can be applied to low alloyed steel in order to enhance the lifetime of the cheap substrate material. In this study NiCr (50Ni49Cr1Fe) powder was sprayed with DJ Hybrid and CJS HVOF techniques, and the spraying process was optimized with process map methodology, including SprayWatch for measuring the temperature and velocity of the spray stream, and ICP (In-situ coating property measurement) for measuring the stress state. Different spraying parameters were applied in order to attain the best suitable coating characteristics for high temperature applications, such as high density and low oxidation stage. The coatings were analyzed e.g. by microscopic means and mechanical testing. The use of process optimization, process-structure-properties methodology, and following coating characteristics are presented

Original language	English
Title of host publication	International Thermal Spray Conference & Exposition (ITSC 2012)
Subtitle of host publication	Air, Land, Water and the Human Body: Thermal Spray Science and Applications
Publisher	ASM International
Pages	81-86
ISBN (Print)	978-1-63266-679-6
Publication status	Published - 2012
MoE publication type	A4 Article in a conference publication
Event	International Thermal Spray Conference, ITSC 2012 - Houston, United States Duration: 21 May 2012 → 24 May 2012

Conference

Conference	International Thermal Spray Conference, ITSC 2012
Abbreviated title	ITSC
Country	United States
City	Houston
Period	21/05/12 → 24/05/12

Keywords

ProperTune

Fingerprint Dive into the research topics of 'Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application'. Together they form a unique fingerprint.

Cite this

@inproceedings{3d847b87c2f0418abc9106ac6e207799,

title = "Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application",

abstract = "Alloys with high amount of chromium are used for protection of power plant boilers against the high temperature corrosion, especially heat exchanger surfaces, such as superheaters. Thermal spray coatings can be applied to low alloyed steel in order to enhance the lifetime of the cheap substrate material. In this study NiCr (50Ni49Cr1Fe) powder was sprayed with DJ Hybrid and CJS HVOF techniques, and the spraying process was optimized with process map methodology, including SprayWatch for measuring the temperature and velocity of the spray stream, and ICP (In-situ coating property measurement) for measuring the stress state. Different spraying parameters were applied in order to attain the best suitable coating characteristics for high temperature applications, such as high density and low oxidation stage. The coatings were analyzed e.g. by microscopic means and mechanical testing. The use of process optimization, process-structure-properties methodology, and following coating characteristics are presented",

keywords = "ProperTune",

author = "Maria Oksa and Tommi Varis and Tomi Suhonen and Mika Jokipii",

note = "Project code: 37397; International Thermal Spray Conference, ITSC 2012, ITSC ; Conference date: 21-05-2012 Through 24-05-2012",

year = "2012",

language = "English",

isbn = "978-1-63266-679-6",

pages = "81--86",

booktitle = "International Thermal Spray Conference & Exposition (ITSC 2012)",

publisher = "ASM International",

address = "United States",

}

Oksa, M, Varis, T, Suhonen, T & Jokipii, M 2012, Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application. in International Thermal Spray Conference & Exposition (ITSC 2012): Air, Land, Water and the Human Body: Thermal Spray Science and Applications . ASM International, pp. 81-86, International Thermal Spray Conference, ITSC 2012, Houston, United States, 21/05/12.

Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application. / Oksa, Maria; Varis, Tommi; Suhonen, Tomi; Jokipii, Mika.

International Thermal Spray Conference & Exposition (ITSC 2012): Air, Land, Water and the Human Body: Thermal Spray Science and Applications . ASM International, 2012. p. 81-86.

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

TY - GEN

T1 - Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application

AU - Oksa, Maria

AU - Varis, Tommi

AU - Suhonen, Tomi

AU - Jokipii, Mika

N1 - Project code: 37397

PY - 2012

Y1 - 2012

N2 - Alloys with high amount of chromium are used for protection of power plant boilers against the high temperature corrosion, especially heat exchanger surfaces, such as superheaters. Thermal spray coatings can be applied to low alloyed steel in order to enhance the lifetime of the cheap substrate material. In this study NiCr (50Ni49Cr1Fe) powder was sprayed with DJ Hybrid and CJS HVOF techniques, and the spraying process was optimized with process map methodology, including SprayWatch for measuring the temperature and velocity of the spray stream, and ICP (In-situ coating property measurement) for measuring the stress state. Different spraying parameters were applied in order to attain the best suitable coating characteristics for high temperature applications, such as high density and low oxidation stage. The coatings were analyzed e.g. by microscopic means and mechanical testing. The use of process optimization, process-structure-properties methodology, and following coating characteristics are presented

AB - Alloys with high amount of chromium are used for protection of power plant boilers against the high temperature corrosion, especially heat exchanger surfaces, such as superheaters. Thermal spray coatings can be applied to low alloyed steel in order to enhance the lifetime of the cheap substrate material. In this study NiCr (50Ni49Cr1Fe) powder was sprayed with DJ Hybrid and CJS HVOF techniques, and the spraying process was optimized with process map methodology, including SprayWatch for measuring the temperature and velocity of the spray stream, and ICP (In-situ coating property measurement) for measuring the stress state. Different spraying parameters were applied in order to attain the best suitable coating characteristics for high temperature applications, such as high density and low oxidation stage. The coatings were analyzed e.g. by microscopic means and mechanical testing. The use of process optimization, process-structure-properties methodology, and following coating characteristics are presented

KW - ProperTune

M3 - Conference article in proceedings

SN - 978-1-63266-679-6

SP - 81

EP - 86

BT - International Thermal Spray Conference & Exposition (ITSC 2012)

PB - ASM International

T2 - International Thermal Spray Conference, ITSC 2012

Y2 - 21 May 2012 through 24 May 2012

ER -