Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (13/13 displayed)

  • 2024Analytical and applied pyrolysis of challenging biomass feedstocks21citations
  • 2024Analytical and applied pyrolysis of challenging biomass feedstocks:Effect of pyrolysis conditions on product yield and composition21citations
  • 2023Cold-end corrosion caused by hygroscopic ammonium chloride in thermal conversion of biomass and waste7citations
  • 2021Formation of NH4Cl and its role on cold-end corrosion in CFB combustioncitations
  • 2021Superheater deposits and corrosion in temperature gradient – Laboratory studies into effects of flue gas composition, initial deposit structure, and exposure time23citations
  • 2020Application of bipolar electrochemistry to accelerate dew point corrosion for screening of steel materials for power boilers14citations
  • 2018Experimental and modeling approaches to simulate temperature-gradient induced intradeposit chemical processes with implications for biomass boiler corrosioncitations
  • 2017The effect of temperature on the formation of oxide scales regarding commercial superheater steels11citations
  • 2017The influence of flue gas temperature on lead chloride induced high temperature corrosion30citations
  • 2017Causes of low-temperature corrosion in combustion of bituminous coalcitations
  • 2014Changes in Composition of Superheater Deposits due to Temperature Gradientscitations
  • 2012High temperature corrosion of boiler waterwalls induced by chlorides and bromides. Part 2:Lab-scale corrosion tests and thermodynamic equilibrium modeling of ash and gaseous species27citations
  • 2011Performance of superheater materials in simulated oxy-fuel combustion conditions at 650°Ccitations

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Co-Authors (by relevance)

  • Vinu, Ravikrishnan
  • Tiwari, Mahendra
  • Dirbeba, Meheretu Jaleta
  • Lehmusto, Juho
  • Vainio, Emil
  • Hupa, Leena
  • Hupa, Mikko
  • Laurén, Tor
  • Niemi, Jonne
  • Engblom, Markus
  • Lindberg, Daniel
  • Lisak, Grzegorz
  • Bankiewicz, Dorota
  • Kinnunen, Hanna
  • Enestam, Sonja
  • Uusitalo, Mikko
  • Vänskä, Kyösti
  • Zabetta, Edgardo Coda
  • Lindberg, Daniel Kristoffer
  • Silvennoinen, Jaani
  • Frantsi, Ari
  • Vainikka, Pasi
  • Pohjanne, Pekka
  • Tuurna, Satu
OrganizationsLocationPeople

article

The influence of flue gas temperature on lead chloride induced high temperature corrosion

  • Kinnunen, Hanna
  • Enestam, Sonja
  • Uusitalo, Mikko
  • Engblom, Markus
  • Lindberg, Daniel
  • Yrjas, Patrik
Abstract

Firing of waste-​based fuels increases the risk for heavy metal-​induced corrosion in the furnace walls and in other low-​temp. heat transfer surfaces, such as primary superheaters. &nbsp;Lead-​contg. compds., esp. alkali lead chlorides, were detected in the boiler water walls, causing severe corrosion. &nbsp;Corrosion rate of chlorine-​induced corrosion is known to be dependent on the material temp. and the objective of this work was to study the influence of the flue gas temp. on lead chloride-​induced corrosion. &nbsp;The expts. were carried out with full-​scale corrosion probe and deposit probe measurements in a recycled wood firing CFB boiler. &nbsp;The material used in the corrosion probe measurements was low alloy steel EN10216-​2 16Mo3 and the material temp. was adjusted to 360°. &nbsp;Two corrosion and deposit probes were used in different locations to expose the probes towards hot, 800°, and cooler, 490°, flue gas temps. &nbsp;Changes of the wall thicknesses were measured and the samples were analyzed with SEM​/EDS and x-​ray diffraction for more detailed deposit characterization. &nbsp;Corrosion was detected in both the hot and the cooler flue gas samples. &nbsp;A low melting (T<sub>0</sub> = 368°) alkali-​lead-​chloride mixt. was identified. &nbsp;Findings from these measurements strongly indicate this mixt. to be the corrosion-​causing compd. at both flue gas temps. &nbsp;However, the corrosion rate was higher in the hot flue gas sample compared to the cooler flue gas sample. &nbsp;A much steeper deposit temp. gradient was calcd. for the hot flue gas sample, suggesting that the alkali-​lead-​chloride mixt. is in the molten form. &nbsp;These findings, together with the higher proportion of the present alkali-​lead-​chloride mixt., are the potential factors for the higher corrosion rate in the hot flue gas sample compared to the cooler flue gas sample.

Topics
  • impedance spectroscopy
  • surface
  • scanning electron microscopy
  • steel
  • Energy-dispersive X-ray spectroscopy
  • wood
  • high temperature corrosion