Abrasive wear of WC-NiMoCrFeCo thermally sprayed coatings in dependence on different types of abrasive sands

0346338 - ÚFP 2011 RIV SK eng J - Článek v odborném periodiku
Kašparová, M. - Zahálka, F. - Houdková, Š. - Ctibor, Pavel
Abrasive wear of WC-NiMoCrFeCo thermally sprayed coatings in dependence on different types of abrasive sands.
Kovové materiály. Roč. 48, č. 1 (2010), s. 75-85. ISSN 0023-432X. E-ISSN 1338-4252
Grant CEP: GA AV ČR 1QS200430560
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: WC-Hastelloy * abrasive wear * Al2O3 sand * SiO2 sand * braun size * abrasive efficiency
Kód oboru RIV: JG - Hutnictví, kovové materiály
Impakt faktor: 0.471, rok: 2010
http://kovmat.sav.sk/abstract.php?rr=48&cc=1&ss=73

The abrasive wear is a very extended type of wear, which in 80 %–90 % causes all possible damages of machine elements operation parts. WC-NiMoCrFeCo coating was investigated as an advantageous material for wear protection and its abrasion wear resistance was tested. The tribological tests were performed in "low-stress conditions" using Dry Sand Rubber/Wheel Test in accordance with the ASTM G-65 Standard. Alumina and silica abrasive sands were chosen in three different size distributions: Al2O3 in grain size 75–90 μm, 212–250 μm, 600– 700 μm and SiO2 in grain size 60–90 μm, 200–300 μm, 600–700 μm. The wear tracks of WC-Hastelloy coating were examined using scanning electron microscope. WC-NiMoCrFeCo was found as a good alternative to the commonly used carbide coating. To evaluate an abrasive ability and efficiency of all abrasive mediums, the wear test of soft carbon steel and of WC-Hastelloy coating was performed by periodical using of abrasive particles.
Trvalý link: http://hdl.handle.net/11104/0005971