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Low-Z materials, such as carbon-based materials and Be, are major plasma-facingmaterial (PFM) for current, even in future fusion devices. In this paper, a new type ofmultielement-doped carbon-based materials developed are presented along with experimental re-sults of their properties. The results indicate a decrease in chemical sputtering yield by one orderof magnitude, a decrease in both thermal shock resistance and radiation-enhanced sublimation, anevidently lower temperature desorption spectrum, and combined properties of exposing to plasma. 相似文献
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1979年,我厂接受了生产M1432A×1500型万能外圆磨床的任务,该机床床身导轨长3.9米。当时我厂最长的导轨磨床床身全长5米,由两段联结而成,只能加工3米长的工件,如重新制造一台,则影响当年投产的要求。因此,我们就在现有导轨磨床的床身中间加一段,由两段5米加长到三段8米,使有效磨削长度达5米。同时导轨的润滑由动压改为静压,且将床身导轨由强制调平改为自然调子。现将8米导轨磨床床身导轨的加工及自然调平方法简介如下: 相似文献
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捷克制 E—25型电铲铸钢铲杆,兄弟单位也已试制成功,质量很好,并正式投产,因此肯定有很完整的经验。公司机械总厂试制开始的时间早,而这篇仅是初步总结。 相似文献
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