Mechanical properties of dense cordierite discs sintered by solar radiation hea...

• Author(s): Oliveira, F. A. Costa ; Shohoji, Nobumitsu ; Martinez, Diego ; Fernandes, Jorge Cruz ; Rodriguez, José ; Rosa, Luís Guerra ; Canadas, Immaculada
• Date: 2009
• Persistent ID: http://hdl.handle.net/10400.9/1071
• Origin: Repositório do LNEG
• Subject(s): Cordierite; Solar furnace; Sintering; Powder density; Uniaxial flexure strength; Equibiaxial flexure strength
• Document Type: Article
• Language: English

Description

Consolidation of cordierite disc specimens was undertaken under concentrated solar beam in a solar furnace at PSA (Plataforma Solar de Almerıá). Satisfactory extent of densification was achieved by the present solar-sintering experiment. The mechanical properties measured for the solar-sintered cordierite test pieces were; density ¼ 2:45 0:02 g/cm3, Vickers microhardness HV ¼ 7:31 0:29 GPa, Young’s modulus E ¼ 97 5 GPa, shear modulus G ¼ 38 2 GPa, Poisson ratio ¼ 0:27 0:01, fracture toughness KIC ¼ 1:50 0:15 MPa m1=2 and modulus of rupture evaluated by ring-on-ring test MORROR ¼ 57:8 13:7 MPa which were comparable to those of the counterparts sintered by conventional industrial gas furnace.