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Preparation and Studying Some Physical and Mechanical Properties of Porcelain with Using Feldspar Replacement | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 10, Issue 3, 2010, Pages 464-478 | ||
| Abstract | ||
| This research includes preparation of porcelain samples with using local raw materials and without using the feldspar material that consider of basic materials for porcelain formation, that is because the feldspar is not local available and will be imported. Feldspar replaced with using calcium carbonate and this material is local available. Porcelain samples formed from (50% Duekhla Kaolin, 40% Ardima Sand and 10% Calcium Carbonate) have been prepared. Powder technology were used topresent the samples by using different pressing pressures (15, 20, 25, 30 and 35) MPa and different sintering temperature (1100, 1150, 1200, 1250 and 1300)°C. The sintering temperature and pressing pressure effect have been studied on some physical properties as (volume shrinkage, bulk density, apparent porosity and water absorption) and mechanical properties as (Vickers hardness and fracture strength). The results shown possibility used the calcium carbonate as a feldspar replacement material in porcelain samples production. The increasing in sintering temperature and pressing pressure leads to enhance the physical and mechanical properties and then decrease because staying the gases in the porosities and formation the residual stresses. | ||
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