Apatite whisker and method for preparation thereof
US5227147A · kind A · utility
11Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | Nov 19, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Nov 19, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2533/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apatite whisker has a mean aspect ratio (length along c-axis/length along a-axis) of not less than 10.0 and contains a carbonic acid group of not less than 0.01 wt. % based on total weight of the whisker. A method for preparing an apatite whisker involves precipitating and growing an apatite from a liquid containing phosphoric acid and calcium to have a mean aspect ratio (length along c-axis/length along a-axis) of not less than 10.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.