Patent 7354652 was granted and assigned to NGK Insulators on April, 2008 by the United States Patent and Trademark Office.
A corrosion-resistant member, which is exposed to a corrosive environment is provided. The corrosion-resistant member is made of a corrosion-resistant material that contains at least one of an oxide of calcium and aluminum, and a calcium aluminum oxide. The corrosion-resistant material includes a rare earth element in an amount of less than 5 wt %.