METHOD AND ARTICLE FROM ALUMINUM OXIDE GLASS AND ARTICLES MADE THEREFROM

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A method of making an article from an aluminum oxide glass is disclosed. The aluminum oxide glass includes a rare earth oxide. The aluminum oxide glass has a glass transition temperature and a crystallization temperature, and these temperatures differ by at least 25K. The method includes : providing a glass in a form comprising particles, beads, microspheres, or fibers; heating the glass above the Tg such that the particles, beads, microspheres, or fibers coalesce to form a coalesced shape; and cooling the coalesced shape to form the article.