Processing and properties of silicon nitride ceramics

dc.contributor.advisorShaw, Martinen_ZA
dc.contributor.advisorPaterson, Adrianen_ZA
dc.contributor.advisorAllen, Colinen_ZA
dc.contributor.authorNel, Jacqueline Margoten_ZA
dc.date.accessioned2016-09-06T14:40:54Z
dc.date.available2016-09-06T14:40:54Z
dc.date.issued1993en_ZA
dc.descriptionBibliography: pages 129-139.en_ZA
dc.description.abstractSilicon nitride, Si₃N₄, ceramics were produced using either silicon or silicon nitride powder. The silicon was reaction bonded in nitrogen atmosphere to form reaction bonded Si₃N₄,which was then sintered between 1700°C and 1800°C to form a dense Si₃N₄ ceramic. The silicon nitride powder compacts were also sintered between 1700°C and 1800°C. In order to achieve densification Y₂O₃-A1₂O₃ additive combination was used in both processing routes. The physical and mechanical properties of the Si₃N₄ materials was found to be dependent on the processing conditions. The post sintered reaction bonded Si₃N₄ materials had the highest densities and hardness values, while the sintered Si3N4 materials had the highest strength and toughness values. The microstructure was also influenced to a great extent by the processing conditions, and this in tum influenced the mechanical properties of the ceramics.en_ZA
dc.identifier.apacitationNel, J. M. (1993). <i>Processing and properties of silicon nitride ceramics</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/21682en_ZA
dc.identifier.chicagocitationNel, Jacqueline Margot. <i>"Processing and properties of silicon nitride ceramics."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1993. http://hdl.handle.net/11427/21682en_ZA
dc.identifier.citationNel, J. 1993. Processing and properties of silicon nitride ceramics. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Nel, Jacqueline Margot AB - Silicon nitride, Si₃N₄, ceramics were produced using either silicon or silicon nitride powder. The silicon was reaction bonded in nitrogen atmosphere to form reaction bonded Si₃N₄,which was then sintered between 1700°C and 1800°C to form a dense Si₃N₄ ceramic. The silicon nitride powder compacts were also sintered between 1700°C and 1800°C. In order to achieve densification Y₂O₃-A1₂O₃ additive combination was used in both processing routes. The physical and mechanical properties of the Si₃N₄ materials was found to be dependent on the processing conditions. The post sintered reaction bonded Si₃N₄ materials had the highest densities and hardness values, while the sintered Si3N4 materials had the highest strength and toughness values. The microstructure was also influenced to a great extent by the processing conditions, and this in tum influenced the mechanical properties of the ceramics. DA - 1993 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1993 T1 - Processing and properties of silicon nitride ceramics TI - Processing and properties of silicon nitride ceramics UR - http://hdl.handle.net/11427/21682 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21682
dc.identifier.vancouvercitationNel JM. Processing and properties of silicon nitride ceramics. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1993 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21682en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMaterials Engineeringen_ZA
dc.titleProcessing and properties of silicon nitride ceramicsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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