| 摘要 |
PURPOSE: A ceramic folding product for a switch valve is provided to have high mechanical strength and high hydrophilic property, and low frictional and low abrasion properties in the water. CONSTITUTION: A ceramic folding product(2) is spreaded homogeneously a composite oxide of spinel structure(4) of anhydrous aluminum(MAl2O4) having as the same particle size as aluminum in the a mother material(3) of alpha-aluminum (alpha-Al2O3), in the form of a solid solution or a compound, in which M is one metal selected from Mg, Zn, Co, Ni, Cu, Mn and Fe, the content of MAl2O4 is 5-50wt%. The ceramic product is produced in a low price and used for a valve of a tap.
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