| Suppression of Pyrolysis of Si-C-O Fiber With Oxide Film |
93 |
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| Authors:
Toshio Shimoo; Hemin Chen; Ken-ichi Kakimoto; Kiyohito Okamura; OSAKA PREFECTURE UNIV SAKAI (JAPAN)
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 | Investigated has been the pyrolysis of si-c-o fiber (nicalon) coated with an oxide film. nicalon fiber was heated in an o2 stream, and was subsequently heated in an ar stream at temperatures from 1573 to 1773k. the mass change of the fiber was determined with a thermobalance. the reaction products were examined by x-ray diffraction, sem and tem observations. during formation of the oxide film, the amorphous fiber core grew ... |
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| Suppression of Pyrolysis of Si-C-O Fiber With Oxide Film |
93 |
|
| Authors:
Toshio Shimoo; Hemin Chen; Ken-ichi Kakimoto; Kiyohito Okamura; OSAKA PREFECTURE UNIV SAKAI (JAPAN)
|
| The pyrolysis of Si-C-O fiber (Nicalon) coated with an oxide film has been investigated. Nicalon fiber was heated in an O2 stream, and was subsequently heated in an Ar stream at temperatures from 1573 to 1773 K. The mass change of the fiber was determined with a thermobalance. The reaction products were examined by X-ray diffraction, SEM and TEM observations. During formation of the oxide film, the amorphous fiber core ... |
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| Effect of Thermal History on Pyrolysis of Si-C-O Amorphous Fiber Coated with Oxide Film |
93 |
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| Authors:
Toshio Shimoo; Hemin Chen; Kiyohito Okamura; OSAKA PREFECTURE UNIV SAKAI (JAPAN)
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| The effect of thermal history on pyrolysis of Si-C-O fibers coated with oxide films was investigated. The fibers were oxidized at 1373, 1573, and 1773 K to form an oxide film about .47 microns in thickness, and were quenched to room temperature. These oxidized fibers (named fiber-a, -b and -c respectively) were heated rapidly up to 1573, 1673, and 1773 K in Ar. During these heat treatments, mass changes of ... |
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| Pyrolysis of Si-C-O Fibers (Nicalon) at Temperatures from 1473 to 1673 K |
92 |
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| Authors:
Toshio Shimoo; Hemin Chen; Kiyohito Okamura; OSAKA PREFECTURE UNIV SAKAI (JAPAN)*
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| The pyrolysis mechanisms of two types of commercial Si-C-O fibers (Nicalon NL400 and NL200 produced by Nippon Carbon Co.) has been studied. A thermobalance in an argon atmosphere was used to measure the pyrolitic rate for 64.8 ks at temperatures from 1473 K to 1673 K. The pyrolytic rate was strongly dependent on temperature. NL400 with the higher concentration of oxygen, and a highly disordered arrangement, rapidly decomposed to beta-SiC. ... |
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