论文部分内容阅读
钢中微量气体元素的存在对其性能的严重影响,越来越被人们重视,近十年来对金属中微量气体元素测定的新方法、新仪器不断地出现。气体标样的制备较为困难,在六十年代初,美国等才开始研制钢中氧标样。而日本在七十年代才开始试制,尤其是制备0.0020%以下的钢中氧标样困难更大,目前只有美国等尚能生产,国内于1974年才试制成功钢中氧标样,近年来,有不少单位多次生产钢中氧标样,质量有了提高,但至今尚未生产
More and more attention has been paid to the existence of trace gas elements in steel, which has been paid more and more attention in recent years. New methods and new instruments for determining trace gas elements in metals have been emerging continuously. Preparation of gas standards is more difficult, in the early sixties, the United States began to develop steel oxygen standard. However, Japan started trial production in the seventies. Especially, it is more difficult to prepare the oxygen standard sample of steel below 0.0020%. At present, only the United States and other countries can produce the sample. However, Many units have repeatedly produced steel oxygen standard samples, the quality has improved, but so far not yet produced