ABM Proceedings 2018
DOI: 10.5151/1516-392x-27135
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Aplicação Do Método De Riteveld Para Determinação Das Fases Romboédrica E Hexagonal No Processo De Síntese De Diamante a Partir Do Antraceno

Abstract: ResumoEste trabalho teve como objetivo observar o percentual de transformação das fases (romboédrica e hexagonal), após tratamento termobárico do hidrocarboneto aromático Antraceno. As amostras foram tratadas sob pressão fixada em 4,5GPa e temperatura variando entre 900 e 1300°C, com o intuito de obter estruturas grafíticas. O percentual de fases foi obtido a partir de dados de difração de Raios X e através de refinamento pelo método de Rietveld, sendo que na temperatura de 1300°C foi possível observar um aume… Show more

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“…Rwp, on the other hand, represents the weighted index/error. From a mathematical point of view, it is one of the indices that best reflects the progress of refinement because it minimises the residue in the numerator [ 38 ]. Although the Rwp and GOF values are slightly high, Kinast [ 39 ] claims that it is important to know that the fit quality values are purely numerical and do not reflect the quality of a good fit.…”
Section: Resultsmentioning
confidence: 99%
“…Rwp, on the other hand, represents the weighted index/error. From a mathematical point of view, it is one of the indices that best reflects the progress of refinement because it minimises the residue in the numerator [ 38 ]. Although the Rwp and GOF values are slightly high, Kinast [ 39 ] claims that it is important to know that the fit quality values are purely numerical and do not reflect the quality of a good fit.…”
Section: Resultsmentioning
confidence: 99%