| 摘要 |
PURPOSE:To prepare a lead-containing oxide powder which can be sintered easily to form a sintered material having high density, by using an oxide powder containing >=2 kinds of metals in addition to lead as the constituent components, and distributing the lead component in higher concentration at the outer layer that at the inner part. CONSTITUTION:An oxide containing at least two kinds of metals as the constituent components or its precursor powder is prepared beforehand. A lead compound is added to the above oxide powder. The amount of the lead compound is stoichiometric amount to the powdery composition, or excess to the stoichiometric amount by <=8mol%. The mixture is calcined to 400-1,200 deg.C to obtain a lead-containing oxide powder containing at least two kinds of metals in addition to lead, as the constituent components, and containing the lead component at higher concentration in the outer layer than in the inner part. |
