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Initial deformation and wear of cemented carbides in rock drilling as examined by a sliding wear test
Högskolan Dalarna, Akademin Industri och samhälle, Materialteknik.
2017 (Engelska)Ingår i: International journal of refractory metals & hard materials, ISSN 0958-0611, E-ISSN 2213-3917, Vol. 64, s. 7-13Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Due to a combination of high hardness and toughness, resulting in excellent wear resistance, cemented carbides are commonly used as the rock crushing component in rock drilling. The present paper presents a unique study where the very initial stages of deformation and wear of cemented carbide in sliding contact with rock are followed in small incremental steps. After each step, a pre-determined area within the wear mark is characterized using high resolution SEM and EDS. This facilitates analysis of the gradual deformation, material transfer, degradation and wear. The deterioration mechanisms found in this sliding test are similar to those observed in actual rock drilling. Cemented carbide grades with different microstructures show significant differences, where a higher amount of Co and a larger WC grain size both are associated to more wear. 

Ort, förlag, år, upplaga, sidor
2017. Vol. 64, s. 7-13
Nyckelord [en]
Cemented carbides, Deformation, Granite, Rock drilling, Sliding, Wear
Nationell ämneskategori
Materialteknik
Forskningsämne
Stålformning och ytteknik
Identifikatorer
URN: urn:nbn:se:du-24014DOI: 10.1016/j.ijrmhm.2016.12.011ISI: 000397364600002Scopus ID: 2-s2.0-85008391721OAI: oai:DiVA.org:du-24014DiVA, id: diva2:1069182
Tillgänglig från: 2017-01-27 Skapad: 2017-01-27 Senast uppdaterad: 2018-06-05Bibliografiskt granskad

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Olsson, Mikael

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Totalt: 233 träffar
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