| 摘要 |
An inorganic, polycrystalline, ferroelectric fiber with a diameter of from about 1 micron to 1 millimeter, a porosity of less than about 40 percent, a density of at least about 60 percent of theoretical density, and a carbonaceous material content of from about 0 to about 5 percent. The fiber consists essentially of grains of which substantially 100 percent are from about 0.01 to about 5.0 microns in size; the ratio of the size of the largest grain in the fiber to the smallest grain in the fiber is no greater than about 10.
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