Claims
- 1. An electrically conductive alumina fiber which comprises an aluminum oxide matrix, and a continuous phase of carbon in the aluminum oxide matrix, the continuous phase of carbon providing an electrically conductivity of 2.88-78.3 S.multidot.cm.sup.-1 to the alumina fiber, the alumina fiber being obtained by pyrolysis of a precursor fiber of poly[(acryloxy)aloxane] having the formula ##STR5## wherein, R.sub.1 represents CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.3, R.sub.2 represents ##STR6## or another substituted aromatic group at 800.degree.-1200.degree. C. in an inert atmosphere.
- 2. An electrically conductive alumina fiber as defined in claim 1, further comprising an electrically insulative layer at the surface consisting solely of aluminum oxide, wherein carbon is substantially eliminated by the pyrolysis to yield the electrically insulative layer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-192792 |
Aug 1988 |
JPX |
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Parent Case Info
This is a divisional of application No. 07/317,490 filed Mar. 1, 1989.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
4716055 |
Sanders et al. |
Dec 1989 |
|
4724109 |
Yamashita et al. |
Feb 1988 |
|
4801502 |
Weinrotter et al. |
Jan 1989 |
|
4997601 |
Mininni et al. |
Mar 1991 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
317490 |
Mar 1989 |
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