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METHOD OF PREPARING POROUS CERAMIC, GLASS-CERAMIC OR GLASS COATINGS OR BODIES
METHOD OF PREPARING POROUS CERAMIC, GLASS-CERAMIC OR GLASS COATINGS OR BODIES
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机译:制备多孔陶瓷,玻璃陶瓷或玻璃涂层或主体的方法
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摘要
1. Method for preparing a porous ceramic or glass-ceramic or glassy coating on an article, on the one hand, or a porous ceramic or glass-ceramic or glassy self-supporting body, on the other hand, including the following steps : (a) a ceramic or glass-ceramic or glassy mass is made and ground to a powder, (b) the powder is mixed with water, (c) the mixture is either applied in a layer to the article to be provided with the coating or is formed into the body, (d) the layer or the body according to (c) is pre-dried, (e) the pre-dried layer or the pre-dried body according to (d) is fired and, if required, is then subjected to a controlled heat treatment for adjusting the crystal fraction formed in the coating or in the self-supporting body, characterized by the following step between steps (b) and (c) : (b1) the mixture according to (b) is maintained at a temperature from 40 degrees to 200 degrees C for a time period which enables water to bind chemically with the powder.
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