Please use this identifier to cite or link to this item:
http://localhost:8081/jspui/handle/123456789/16545
Title: | TRIBOLOGICAL STUDIES OF SILICON CARBIDE -TITANIUM CARBONITRIDE COMPOSITES |
Authors: | Kumar, B.V. Manoj |
Keywords: | SiC Carbideceramics;Titaniumcarbonitride;Fracturebehavior;Slidingwear |
Issue Date: | May-2017 |
Publisher: | IIT ROORKEE |
Abstract: | SiC carbideceramicsarepromisingmaterialformechanical,specificallytribologicalapplicationsdue to theirhighhardnessandabilitytoretainstrengthathighertemperature.Thoughlowfracturetough- ness limitsitsapplication,useofcompositespreparedbyaddingvariousreinforcementsareattractive alternative.Inthiswork,fracturebehavior,slidingwearmechanismsanderosionwearmechanisms of Siliconcarbide-titaniumcarbonitridecompositesarereported.Fracturesurfacesofmonolithic silicon carbideshowedbrittlefracturebytransgranularmodeoffracturewhereastransgranularmode of fracturealongwithgrainpulloutandparticlepulloutwasobservedintitaniumcarbonitrideadded ceramic composite.Frictionandslidingwearpropertiesofcompositeswerestudiedunderunlu- bricated moderatelyhumidenvironmentatN,10N,20Nloadingconditions.Coefficientoffriction variedbetween0.2to0.4butlittleeffectofloadwasobserved.Significantreductioninslidingwear volumewasobservedbytheadditionoftitaniumnitrideunderhighloadingslidingwearconditions. At lowerloadsreductioninslidingwearvolumeinnotprominant.WornsurfaceanalysisandRaman spectroscopyrevealsinterplayoftwodifferentslidingwearmechanisms.Atlowerloadsmechanical brittle fractureisdominantwearmechanismbutathigherloadstribochemicalwearmechanismsare also prominent.Positiveeffectonerosionwearvolumeduetotitaniumcarbonitridepresenceisalso observed.Wornsurfaceanalysisshowsmechanicalfractureasdominantmechanismformaterial removal.WithTiCNcontentincrementplasticdeformationofcompositesisincreased. |
URI: | http://localhost:8081/jspui/handle/123456789/16545 |
metadata.dc.type: | Other |
Appears in Collections: | MASTERS' THESES (MMD) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
G27514.pdf | 7.47 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.