发明名称 |
Method for manufacturing fine lead titanate powders. |
摘要 |
<p>A method for manufacturing fine powders of lead titanate which includes the steps of reacting a water-soluble titanium compound or the hydrolysis product of a titanium compound with a lead compound in an aqueous alkaline solution having a pH value not less than 11.2, at a temperature not less than 100°C to obtain a precipitate of lead titanate fine powder, and then recovering the lead titanate fine powder from the remaining solution.</p><p>By adjusting the pH and the synthesis temperature at proper values, it is possible to synthesize different forms of lead titanate, including a perovskite structure, a pyrochlore structure, or acicular (needle-like) crystals with a novel crystal phase.</p><p>The acicular fine lead titanate crystals have an X-ray diffraction peak at 28 = 30.71° using a copper target.</p> |
申请公布号 |
EP0186199(A2) |
申请公布日期 |
1986.07.02 |
申请号 |
EP19850116573 |
申请日期 |
1985.12.24 |
申请人 |
SONY CORPORATION |
发明人 |
UEDAIRA, SATORU;SUZUKI, MASAYUKI;YAMANOI, HIROSHI;TAMURA, HIDEMASA |
分类号 |
C01G23/00;(IPC1-7):C01G23/00 |
主分类号 |
C01G23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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