Masina, Bathusile NForbes, ABodkin, RMwakikunga, Bonex W2014-05-132014-05-132010-09Masina, B.N, Forbes, A, Bodkin, R and Mwakikunga, B.W. 2010. An all optical system for studying temperature induced changes in polycrystalline diamond deposited on a tungsten carbide substrate. In: 21st European conference on diamond, diamond-like materials, carbon nanotubes and nitrides. 5th-9th September 2010, Budapest, Hungaryhttp://hdl.handle.net/10204/739621st European conference on diamond, diamond-like materials, carbon nanotubes and nitrides. 5th-9th September 2010, Budapest, HungaryIn this poster the authors discussed the ability to heat an industrial diamond sample by means of optical absorption of a CO2 laser beam, and then measure the resulting temperature on the surface of the diamond optically by means of radiometry principles. A model for the temperature on the surface of the diamond was developed and they show that it agrees qualitatively with experimental data. In particular, they show that it is possible to engineer the boundary conditions and initial beam such that uniform temperature gradients can be created, thus allowing the study of thermal effects in the absence of thermal stresses. They make use of the known grey body emission from polycrystalline diamond (PCD). They show that uniform temperature alone can account for significant structural changes in PCD diamond.enAll optical systemPolycrystalline diamondLaser heatingThermal stressPolycrystalline diamond toolsCO2 laser beamConference PresentationMasina, B. N., Forbes, A., Bodkin, R., & Mwakikunga, B. W. (2010). An all optical system for studying temperature induced changes in polycrystalline diamond deposited on a tungsten carbide substrate. CSIR. http://hdl.handle.net/10204/7396Masina, Bathusile N, A Forbes, R Bodkin, and Bonex W Mwakikunga. "An all optical system for studying temperature induced changes in polycrystalline diamond deposited on a tungsten carbide substrate." (2010): http://hdl.handle.net/10204/7396Masina BN, Forbes A, Bodkin R, Mwakikunga BW, An all optical system for studying temperature induced changes in polycrystalline diamond deposited on a tungsten carbide substrate; CSIR; 2010. http://hdl.handle.net/10204/7396 .TY - Conference Presentation AU - Masina, Bathusile N AU - Forbes, A AU - Bodkin, R AU - Mwakikunga, Bonex W AB - In this poster the authors discussed the ability to heat an industrial diamond sample by means of optical absorption of a CO2 laser beam, and then measure the resulting temperature on the surface of the diamond optically by means of radiometry principles. A model for the temperature on the surface of the diamond was developed and they show that it agrees qualitatively with experimental data. In particular, they show that it is possible to engineer the boundary conditions and initial beam such that uniform temperature gradients can be created, thus allowing the study of thermal effects in the absence of thermal stresses. They make use of the known grey body emission from polycrystalline diamond (PCD). They show that uniform temperature alone can account for significant structural changes in PCD diamond. DA - 2010-09 DB - ResearchSpace DP - CSIR KW - All optical system KW - Polycrystalline diamond KW - Laser heating KW - Thermal stress KW - Polycrystalline diamond tools KW - CO2 laser beam LK - https://researchspace.csir.co.za PY - 2010 T1 - An all optical system for studying temperature induced changes in polycrystalline diamond deposited on a tungsten carbide substrate TI - An all optical system for studying temperature induced changes in polycrystalline diamond deposited on a tungsten carbide substrate UR - http://hdl.handle.net/10204/7396 ER -