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Cavitation erosion, slurry erosion and solid particle erosion performance of metal matrix composite (MMC) coatings sprayed with modern high velocity thermal spray processes

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017
Subtitle of host publicationOctober 8-12, 2017, Pittsburgh, Pennsylvania USA
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1161-1163
Number of pages3
Volume2
ISBN (Electronic)9781510850583
Publication statusPublished - 1 Jan 2017
Publication typeA4 Article in a conference publication
EventMATERIALS SCIENCE & TECHNOLOGY CONFERENCE AND EXHIBITION -
Duration: 1 Jan 1900 → …

Conference

ConferenceMATERIALS SCIENCE & TECHNOLOGY CONFERENCE AND EXHIBITION
Period1/01/00 → …

Abstract

Thermally sprayed metal-matrix composite (MMC) coatings are widely used to protect components and surfaces against wear in various applications. Hard and wear resistant coatings increase the component lifetime and allow the refurbishment of the worn components. This produces significant savings and promotes ecological manufacturing. The current state-of-theart coatings are produced with high velocity oxygen-fuel (HVOF) spray processes, while modern high velocity air-fuel (HVAF) spray process has become increasingly available in production and research. The current study focuses on the performance of tungsten carbide (WC-10Co4Cr) and chromium carbide (Cr3C2-25NiCr) based MMC coatings sprayed with gaseous and liquid fuelled HVOF processes and a modern HVAF spray process. Two powder feedstock types, i.e. dense particles with fine carbides and porous particles with coarse carbides, were selected for both compositions. The results show significant improvements especially for WC-10Co4Cr coatings sprayed with HVAF when compared to HVOF sprayed coatings. In addition, Cr3C2-25NiCr coatings sprayed from the dense powder resulted in improved wear resistance compared to conventional feedstock powder.

Keywords

  • Cavitation erosion, Coating, Metal matrix composite, Slurry erosion, Thermal spray

Publication forum classification

Field of science, Statistics Finland