Sintering behavior of nanostructured -CPP powder obtained from avian eggshell waste


  • Bruno Silvano SILVA Northern Fluminense State University, Advanced Materials Laboratory/GMCer, Campos dos Goytacazes, RJ, Brazil
  • Tarcília Henrique Amaral Correa Northern Fluminense State University, Advanced Materials Laboratory/GMCer, Campos dos Goytacazes, RJ, Brazil
  • Rômulo Leite LOIOLA Northern Fluminense State University, Advanced Materials Laboratory/GMCer, Campos dos Goytacazes, RJ, Brazil
  • José Nilson França HOLANDA Northern Fluminense State University, Advanced Materials Laboratory/GMCer, Campos dos Goytacazes, RJ, Brazil



B-CPP, Eggshell waste, Sintering, Properties, Microstructure


                In this work the sintering behavior of a nanostructured b-calcium pyrophosphate (b-CPP) powder derived of avian eggshell waste was investigated. The b-CPP pellets were prepared by uniaxial pressing and sintered in air for 2h at temperatures ranging from 600℃ to 1200℃. The sintering behavior was evaluated in terms of linear shrinkage, water absorption, apparent porosity, apparent density, tensile strength, FTIR (Fourier-transform infrared) analysis, and microstructural analysis via SEM (scanning electron microscopy). The results showed that the nanostructured b-CPP powder presented different behaviors with increasing sintering temperature. It was found that sintering at higher temperatures led to greater densification of the b-CPP pellets (92.56% of theoretical density when sintered at 1000℃). However, SEM micrographs of the fractured surfaces of the sintered β-CCP pellets showed the presence of micro-cracks that negatively impact the mechanical strength. Hence, it was concluded that the sintering temperature of 900℃ was found to be the most suitable in terms of densification, mechanical strength, and sintered microstructure for the production of b-CPP bioceramic pellets derived of avian eggshell waste for potential medical application.


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How to Cite

B. S. SILVA, T. H. A. . Correa, R. L. LOIOLA, and J. N. F. HOLANDA, “Sintering behavior of nanostructured -CPP powder obtained from avian eggshell waste”, J Met Mater Miner, vol. 32, no. 1, pp. 86–92, Mar. 2022.



Original Research Articles