Sintering and Mechanical Properties of Diopside Prepared from Algerian Raw Materials

EasyChair Preprint 2733

Abstract

Diopside is a type of ceramics highly valued for its beauty and strength. The overall goal of this work is to utilize local raw materials within the following fractions: doloma obtained from mineral dolomite and SiO2. The density of diopside samples without sintering is 1.87 g/cm3. It is seen that sintering increases the density of the diopside samples sintered between 1150°C and 1300°C. It has been found that slightly lower tensile strength and micro hardness values in the range of 1 and 4.2 GPa were obtained. To improve the relative density of the sintered diopside and their mechanical properties, different amounts of Na2CO3 (0.5 and 1.0 wt%) have been added. The prepared diopside shows a micro hardness in the range of 5.7 GPa through 6 GPa for the samples containing all Na2CO3 additions at lower temperatures. A tensile strength of 100 MPa for 1 % of Na2CO3 addition was achieved.

Keyphrases: Doloma, Sintering, diopside, mechanical properties

@booklet{EasyChair:2733,
  author    = {Souheila Zouai and Fatiha Guerfa and Abdelhamid Harabi},
  title     = {Sintering and Mechanical Properties of Diopside Prepared from Algerian Raw Materials},
  howpublished = {EasyChair Preprint 2733},
  year      = {EasyChair, 2020}}