Graphite is commonly used for the nozzle of rocket motors. To improve the heat-resisting characteristic of graphite, silicone oil is penetrayed into the graphite specimen in a vacuum vessel. As a basic test hot gas was blown by the torch burner on the face of the specimen and the temperature change on the back was measured. The heat-resisting characteristic of graphite is mainly due to its ablation effect. When silicone oil is penetrated graphite, the ablation effect increases remarkably, though the increase of weight is slight.
シリコーンオイルを浸透させたグラファイトの耐熱性について
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