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Wear resisting sintered alloy and its production, and control rod driving apparatus and nuclear reactor using the same
Wear resisting sintered alloy and its production, and control rod driving apparatus and nuclear reactor using the same
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机译:耐磨烧结合金及其制造,使用该合金的控制棒驱动装置和核反应堆
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摘要
A wear resistant material containing no cobalt is used for a sliding portion of a control rod driving mechanism of a nuclear plant for reducing the exposure dose due to elution of cobalt and ensuring smooth driving of a control rod under a high load for a long time. A control rod driving mechanism employs a roller and a pin, each of which is made of a wear resisting alloy comprising coarse particles of a hard phase, having a particle size of from 20 to 100 m, and dispersed in a soft matrix made of an iron-based or nickel-based alloy containing chromium and having a hardness of 300 Hv or less. A nuclear reactor employs this control rod driving mechanism.
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