LOW-STRAIN-RATE MODIFIED ZIRCON MATERIAL AND ARTICLES

摘要

A modified zircon-based refractory material comprising TiO2 and Y2O3 having a density in certain embodiments higher than 4.00 g cm-3, and method of making such zircon materials. The process involves the use of zircon particles having a multi-modal particle distribution curve in making the green body. The material exhibits an improved performance in creep rate. The invention is particularly useful for making zircon-based isopipes for fusion down-draw forming of glass sheet materials.