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Nickel-based HVOF coatings promoting high temperature corrosion resistance of biomass-fired power plant boilers

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)236-245
Number of pages10
JournalFuel Processing Technology
Volume125
DOIs
Publication statusPublished - 2014
Publication typeA1 Journal article-refereed

Abstract

There are over 1000 biomass boilers in Europe, and the number is increasing due to actions for reducing greenhouse gas emissions. Biomass boilers often experience strong corrosion due to harmful elements in fuels. In biomass burning, detrimental components include especially chlorine, potassium and heavy metals, which can cause chlorine-induced active oxidation or hot corrosion by molten phases even at fairly low temperatures. In order to increase the corrosion resistance of heat exchanger components, either more alloyed steels or protective coatings should be applied. High velocity oxy-fuel (HVOF) sprayed coatings may provide corrosion protection for low alloy tube materials. Three nickel based thermal spray coatings (Ni-24Cr-16.5Mo, Ni-22Cr

Keywords

  • Biomass combustion, Chlorine induced corrosion, Corrosion protection, High temperature corrosion, HVOF, Thermal spray coating