Phase Compositions of Self Reinforcement AhOfCaAI12019 Composite using X-ray Diffraction Data and Rietveld Technique


The analysis of x-ray diffraction (XRD) patterns by the Rietveld technique was tested to the quantitatively
phase compositions of self reinforcement AlzOiCaAl12019composite. Room-temperature XRD patterns revealed that aAl203was
the only phase presence in the CAOsample, whereas the a-A1203and CaAI12019phases were found for CA5,
CA15, CA30, and CA50 samples. The peak intensity of CA6 in the self reinforcement Alz03/CaA112019composites
increased in proportion with increase in CaAI12019content in contrast to a-AI203. The diffraction patterns for CA100
sample shows minor traces of a-Ah03 even in relatively low peak intensity. It is suggesting that the in-situ reaction
sintering of raw materials were not react completely to form 100 wt % CaAl12019at temperature 1650 DC.Quantitative
phase compositions of self reinforcement AlzOiCaAl12019composites by Rietveld analysis with XRD data has been
well demonstrated. The results showed that the OOF values are relatively low and the fluctuation in the difference plots
shows a reasonable fit between the observed and the calculated plot.
Keywords: X-ray diffraction, Rietveld technique, Al20iCaAl12019. D.Asmi, I.M.Law,and B.O.connor1Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung,
ll.Sumantri Brojonegoro No.1, Bandar Lampung 35145, Indonesia
2Materials Research Group, Department of Applied Physics, Curtin University of Technology,
GPO Box U 1987, Perth, Western Australia