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镍基无磁蒙耐尔合金,有较好的加工性能、电真空性能及焊接性能,所以是制造行波管及其它电子管的重要结构材料。这些器件内部大多保持高真空(约10~(-9)托)。为保证这些器件使用安全、可靠,对该合金气密性要求甚高,即在使用中一定不能漏气。我国目前生产的材料质量较差,存在着严重的漏气现象,从而影响这些器件的生产和使用。因而提出了研究产生漏气的原因及改进措施的生产课题。 经分析该合金之所以漏气,只可能是由于有足够长的(0.3～0.5mm)气体运输“短路途径”,这种短路途径可能是和合金中某种组织结构不均匀,特别是条带结构分
Nickel-based non-magnetic Monel alloy, a better processing performance, electrical vacuum performance and welding performance, it is the manufacture of traveling wave tube and other tube of the important structural materials. Most of these devices to maintain a high vacuum (about 10 ~ (-9) care). In order to ensure the safe and reliable use of these devices, the alloy requires high gas-tightness, that is, it must not leak during use. The quality of the materials currently produced in our country is rather poor, and there is a serious air leakage which affects the production and use of these devices. Therefore, a research topic on the causes of the occurrence of gas leaks and the measures for improvement is put forward. The reason why the alloy was leaked was that it could only be due to the long enough (0.3-0.5 mm) gas transport short-circuit path, which may be due to the non-uniform structure of some kind of alloy in the alloy, especially the band Structure points