| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ceramic screw body provided with a screw part having excellent electric insulation property, chemical resistance, protection against corrosion, and strength. <P>SOLUTION: A ceramic bolt 1 being the ceramic screw body is formed by heating and baking a powder-like raw material containing zirconia being a main component and yttria being a by-component after molding by pressurization to realize such a shape that a male screw part 11 is provided on at least one end side of a stem part 10. <P>COPYRIGHT: (C)2007,JPO&INPIT |
