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Slurry and dry particle erosion wear properties of WC-10Co4Cr and Cr3C2-25NiCr hardmetal coatings deposited by HVOF and HVAF spray processes

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Details

Original languageEnglish
Title of host publicationProceedings of the 18th Nordic Symposium on Tribology, NORDTRIB 2018
Subtitle of host publication18-21 June 2018, Uppsala, Sweden
Number of pages2
Publication statusPublished - 2018
Publication typeD3 Professional conference proceedings
EventNORDIC SYMPOSIUM ON TRIBOLOGY: NORDTRIB -
Duration: 1 Jan 1900 → …

Conference

ConferenceNORDIC SYMPOSIUM ON TRIBOLOGY
Period1/01/00 → …

Abstract

Thermally sprayed hardmetal coatings were produced to provide improved erosion wear compared to conventional cast GX4CrNi13-4 martensitic steel (CA6NM) used in hydro turbine components. Sprayed coatings and reference materials were tested with high-speed slurry pot tester using either fine or coarse quartz as the erosive media. Additional erosion tests were carried out with centrifugal dry erosion tester. Tungsten carbide based coatings provided the highest wear resistance due to the high hardness and even distribution of the fine carbide particles. The cast 13-4 steel samples experienced up to 180 times higher wear rates in fine quartz slurry and up to 36 times higher wear rates in coarse slurry compared to the sprayed coatings.

Publication forum classification

Field of science, Statistics Finland