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

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-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 languageEnglish
Title of host publicationInternational Thermal Spray Conference & Exposition (ITSC 2012)
Subtitle of host publicationAir, Land, Water and the Human Body: Thermal Spray Science and Applications
PublisherASM International
Pages81-86
ISBN (Print)978-1-63266-679-6
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
EventInternational Thermal Spray Conference, ITSC 2012 - Houston, United States
Duration: 21 May 201224 May 2012

Conference

ConferenceInternational Thermal Spray Conference, ITSC 2012
Abbreviated titleITSC
CountryUnited States
CityHouston
Period21/05/1224/05/12

Fingerprint

Boilers
Power plants
Coatings
Spraying
Temperature
Superheaters
High temperature applications
Mechanical testing
Heat exchangers
Chromium
Hot Temperature
Corrosion
Powders
Oxidation
Steel
Substrates

Keywords

  • ProperTune

Cite this

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 (pp. 81-86). ASM International.
Oksa, Maria ; Varis, Tommi ; Suhonen, Tomi ; Jokipii, Mika. / Optimizing NiCr thermal spray coating with process map methodology for high temperature power plant boiler application. International Thermal Spray Conference & Exposition (ITSC 2012): Air, Land, Water and the Human Body: Thermal Spray Science and Applications . ASM International, 2012. pp. 81-86
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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",
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author = "Maria Oksa and Tommi Varis and Tomi Suhonen and Mika Jokipii",
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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 proceedingConference article in proceedingsScientificpeer-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

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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

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M3 - Conference article in proceedings

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

PB - ASM International

ER -

Oksa M, Varis T, Suhonen T, Jokipii M. 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. 2012. p. 81-86