3 documents found, page 1 of 1
Análise do processo de fraturamento em componentes de cimento Portland para apl...
Lima, Jeann Diniz Ferreira; Alves, Erisandra Rodrigues; Nogueira, Ricardo Emílio Ferreira Quevedo; Deus, Ênio Pontes deBecause of recent studies with order to use the cement as a material for application in endodontic treatment, in addition to it being one of the most used building materials in civil construction, for this wide range of applications, which are necessary degradation studies. For this study, using Portland cement, the specimens were prepared with the following measures 45 mm x 6.4 mm x 6.4 mm, and they have notch...
Análise numérica e experimental de propagação de trinca aplicada a biocimentos ...
Alves, Erisandra Rodrigues; Albuquerque, José Silvio Veras; Pennafort Junior, Luiz Carlos Gonçalves; Lima, Jeann Diniz FerreiraThe fracture toughness is an intrinsic property of the material, defined as the mechanical energy required to initiate and propagate a crack in the material until rupture occurs. In this property ceramics and bioceramics, in general, has very low values that can be explained by the existence of very small defects present in the material, which act as stress concentration factors. Calcium phosphate biocements ar...
Nanocompósitos de cerâmicas bioativas para aplicações biomédicas: síntese, cara...
Alves, Erisandra RodriguesCalcium phosphate nanocomposites can be very useful in traumatologic treatments, for the healing of traumatized bone structure, for bone regeneration and bone reconstruction. This work aimed at the production of nanocomposites where a bioceramic matrix is reinforced with nanocrystalline silica (SiO2) particles. The matrix was produced from bioceramic nanopowders (beta tricalcium phosphate, β-TCP) obtained by pr...