Microstructural and mechanical characterization of kaolin DD3 after addition of dolomite (5-20% weight).

作者：Bounib Hamou; Osmani Hocine^*; Loncif Kamel; Chevalier Jerome; Fantozzi Gilbert

来源：Annales de Chimie-Science des Materiaux, 2012, 37(5-6): 171-184.

DOI：10.3166/acsm.37.171-184

Microstructural and mechanical characterization of kaolin DD3 after addition of dolomite (5-20% weight). The mixtures between 5 and 20% weight of dolomite were treated and sintered under the same conditions between 1200 degrees C and 1550 degrees C. XRD Spectra show that the addition from 5 to 20% weight of dolomite led, after sintering, to form ceramic composite composed mainly of phases: mullite, anorthite, spinel and indialite (alpha-cordierite). The addition of dolomite more than 10% reduces the rate of the amorphous phase to 9.6% after sintering in the temperature range 1200 degrees C and 1500 degrees C. Ceramics obtained is characterized by: an apparent density in the range 2,88 to 3,21 g/cm(3), a very low porosity, a module of rupture between 67 and 112 MPa and a Vickers microhardness from 9,1 to 10,67 GPa.

• 出版日期2012-12