Join Us in Prayer 1  âº. Stations of the Cross In this Holy Week we reflect on Jesus' journey to Calvary. 2  Emergency Response CRS responds to emergencies around the world serving those most in need. You can help.
A ceramic is an inorganic, nonmetallic solid material comprising metal, nonmetal or metalloid atoms primarily held in ionic and covalent bonds. The crystallinity of ceramic materials ranges from highly oriented to semi-crystalline, and often completely amorphous (e.g., glasses). Ceramics are also more chemically resistant and can be used in wet environments where steel bearings would rust. 2  In some cases, their electricity-insulating properties may also be valuable in bearings. 3  Two drawbacks to ceramic bearings are a significantly higher cost and susceptibility to damage under shock loads.
Tiles provide a tough, durable flooring option for kitchens. Porcelain tiles are a subset of ceramic tiles. The two types of tile differ in the materials used to make them and in how they are fired. Ceramic tiles are made with a mixture of clay, sand and minerals, while porcelain tiles consist of more sand as well as more refined materials. Porcelain is subjected to higher temperatures and more pressure during firing. Either material is appropriate for kitchen flooring.