All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

High temperature corrosion studies of HVOF sprayed coatings in molten sulphate salts environment

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00555648" target="_blank" >RIV/61389021:_____/19:00555648 - isvavai.cz</a>

  • Alternative codes found

    RIV/47718684:_____/19:N0000007

  • Result on the web

    <a href="https://www.confer.cz/metal/2019/read/885-high-temperature-corrosion-studies-of-hvof-sprayed-coatings-in-molten-sulphate-salts-environment.pdf" target="_blank" >https://www.confer.cz/metal/2019/read/885-high-temperature-corrosion-studies-of-hvof-sprayed-coatings-in-molten-sulphate-salts-environment.pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.37904/metal.2019.885" target="_blank" >10.37904/metal.2019.885</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    High temperature corrosion studies of HVOF sprayed coatings in molten sulphate salts environment

  • Original language description

    The generally applied requirements on lowering of emission production in the field of power industry have led, among others, into the application of low-emission combustion process of coal fired power plants. Besides the emissions reduction, this process has led to an increase of boilers parts corrosion degradation due to the reducing atmosphere in low-emission boilers, responsible for sulphide corrosion and molten salt attack. In such environment, the protection of the exposed surfaces gains importance. Among others, the thermal spraying technology can offer a suitable way of surface corrosion protection. In the present work, the high temperature corrosion behaviour of CoCrAlYTaCSi and Cr3C2-25%NiCr High Pressure/High Velocity Oxygen Fuel (HP/HVOF) sprayed coatings is evaluated and compared to the behaviour of bare structural steel (SPT360) substrate. The specimens were exposed to a molten salt environment, i. e., 12% Na2SO4 + 82% Fe2(SO4)3 at 690 °C under cyclic condition, simulating the working environment in low-emission boilers of coal-fired power plants. The thermogravimetric method was used to establish the kinetics of corrosion. X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) techniques were used to analyse the corrosion products and determine the corrosion mechanism. The thermogravimetric measurement shows high oxidation rate of SPT360 steel. Cr3C2-25%NiCr coating provides slightly better performance compared to CoCrAlYTaCSi coating. Based on the obtained results, both coatings were found to have higher corrosion resistance than the SPT360 steel substrate, offering a sufficient surface protection in a given environment.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    METAL 2019 - 28th International Conference on Metallurgy and Materials, Conference Proceedings

  • ISBN

    978-80-87294-92-5

  • ISSN

  • e-ISSN

  • Number of pages

    7

  • Pages from-to

    (2019)

  • Publisher name

    TANGER Ltd.

  • Place of publication

    Ostrava

  • Event location

    Brno

  • Event date

    May 22, 2019

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article

    000539487400177