[Kovove materialy - Metallic materials]
    Mon - October 22, 2018 - 09:50 No. of hits : 969175 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 48 (2010), Issue 1

Abrasive wear of WC-NiMoCrFeCo thermally sprayed coatings in dependence on different types of abrasive sands
vol. 48 (2010), no. 1, pp. 73 - 85

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.

Key words
WC-Hastelloy, abrasive wear, Al2O3 sand, SiO2 sand, grain size, abrasive efficiency

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

Article abstracts updated: 2018-10-19 12:29      
Articles in press revised: 2018-10-22 07:06     
Full text pdf uploaded: 2018-10-19 12:34    
Information updated: 2018-08-18 11:39   
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