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Detailed analysis on the basis of this article in the Na 2 O-MgO-Al 2 O 3 -the SiO 2 phase diagram , determine the daily magnesia strengthen porcelain blank, developed a good whiteness, high mechanical strength (220MPa), firing wide temperature range (40 ° C), good thermal stability of magnesia strengthen porcelain, and the successful development of the low-temperature frit suitable for daily use magnesia porcelain, magnesia porcelain for daily use secondary firing. In addition, the test also magnesia strengthen the T-ZnO Whisker reinforced ceramic matrix try. MgO-Al 2 O 3 -SiO 2 ternary system phase diagram analysis showed that the daily steatite body composition point in the phase diagram metakaolin (Al 2 O 3 · 2SiO 2 ) - partial talc (3MgO · 4SiO 2 ) connection, location close to the of cristobalite - the original enstatite boundaries at. Studies have shown that when the partial talc (3MgO · 4SiO 2 ) / metakaolin (Al 2 of the O 3 * 2SiO 2 ) gt; 4, the blank of a wide firing temperature range, as the clay in an amount based on the ascertained blank in about 15%. The on Na 2 O · Al 2 O 3 * 2SiO 2 -2MgO · SiO 2 -SiO 2 ternary system phase diagram analysis showed that, talc (3MgO · 4SiO 2 ) and albite (Albite) the proportion of the amount of 7.2 to 2.7, between composition is in the the original enstatite First crystalline region, and the isotherms more sparse, by adjusting the dough composition, the green body can be sintered in a wide temperature range. On this basis, the development of a series of blank, and samples of bulk density, flexural strength, impact toughness and deformation of the experiments and analysis to determine the reasonable blank. Kaolinite and talc Standard TG / DTA is based on the blank TG / DTA analysis to develop a reasonable firing system. This test uses the slip casting process and two pulping process - first finely ground material, after mixing, all kinds of raw materials blending mill - line. The results showed that: The former prepared flexural strength than the latter increased by about 20%, so this test before a pulping method. Crystalline phases (XRD) analysis shows that strengthening porcelain body body crystalline phase completely the original enstatite, no cristobalite. Cross-sectional microstructure observation (SEM) showed that the amount of crystalline phase in the preform reaches 50% or more, and uniform grain refinement, the particle size of about 10μm, the rest for the strengthening of the glass phase exists in the matrix of a very small amount of approximately spherical tiny pores, which is a body high mechanical strength, thermal stability, good material basis. Try using the T-ZnO Whisker reinforced magnesia porcelain body. But the experiment did not achieve the expected results, analyze the causes, presumably caused by zinc oxide in the liquid phase reaction.
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