Wear resistant carbon fiber reinforced Stellite alloy composites

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DOIResolve DOI: http://doi.org/10.1016/j.matdes.2013.11.034
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Journal titleMaterials and Design
Pages487494; # of pages: 8
SubjectCarbon fiber reinforced; Cobalt-based superalloy; High-temperature environment; Nickel-coated carbon fiber; Pin-on-disk tribometers; Stellite alloy; Stellite alloy composites; Tribological properties; Carbides; Carbon; Carbon fibers; Hot isostatic pressing; Superalloys; Wear resistance; Stellite
AbstractStellite alloys are a family of cobalt-based superalloys that are the main engineering materials used for severe corrosion, wear and high temperature environments. These alloys are strengthened by various carbides. However, the presence of carbides can cause many problems although they are main agents for wear resistance. This research attempts to develop a class of novel composite materials which substitute carbon of Stellite alloys with carbon fiber, aiming to minimize the disadvantageous effects of carbides in the alloys. Two types of carbon fiber, plain carbon fiber and nickel-coated carbon fiber, are employed in the composites. The new materials are fabricated using hot isostatic pressing (HIP) technique. The microstructures of these composites are analyzed to investigate if any carbides are induced due to incorporating carbon fibers. The tribological properties of these new composites are characterized on a pin-on-disk tribometer. The experimental results show that the developed composites exhibit better wear resistance than that of medium-carbon Stellite alloys and comparable wear resistance to that of high-carbon Stellite alloys. © 2013 Elsevier Ltd.
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AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21270765
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Record identifier39d5eccc-76ae-4217-b91e-3758c6af4838
Record created2014-02-17
Record modified2016-05-09
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