Method of producing fluorapatite
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United States of America Patent
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Aug 8, 1989
Grant Date -
N/A
app pub date -
Apr 12, 1988
filing date -
Apr 15, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of producing fluorapatite wherein predetermined amounts of calcium monohydrogen phosphate, calcium carbonate, and calcium fluoride are weighed, subjected to a mechanochemical action, and caused to react with one another in water. With this method, a fluorapatite having a uniform composition can be obtained without the accompaniment of by-products. A moisture sensitive resistor of the present invention can be obtained by sintering the fluorapatite produced in accordance with this method. This moisture sensitive resistor has a sufficiently low resistance corresponding to a humidity, and has substantially no hysteresis.
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