摘要 |
A thermal shock-resistant ceramic article and a method of manufacturing the article include alternating layers of a first material (2) comprising a fusible, particulate ceramic composition and a second material (3), typically comprising a porous, pyrolyzable material. The layered structure increases the article's work of fracture and toughness, an d may lead to improved thermal shock-resistance. The method advantageously uses a sheet, film or sleeve to prepare the article for firin g. The composition, thickness, and porosity of the second material (3) will affect the desired properties. The method is particularly adapted f or manufacturing cylindrical articles, including stopper rods, nozzles, and pouring tubes for the metal casting industry. |