论文部分内容阅读
本文叙述的材料出气测试系统有三个显著的特点：一是它通过一个“复合磨口”把测样室与抽气系统活接起来，因而使玻璃超高真空测试装置能够简便而快速地取放试样；二是在测试过程中，流量孔能够加盖封死，从而实现了用恒流导法测量与用定容法测量相结合。这就提供了测出试样长时间微量出气的可能性；三是可以测量多种材料与同一个试样的不同比表面（试样表面积与有效抽速之比）的出气速率。
The material outgassing system described in this article has three salient features: First, it joins the sample cell to the extraction system via a “composite grindstone” so that the glass ultra-high vacuum test device can be accessed easily and quickly Sample; the second is in the testing process, the flow hole can be sealed sealed, so as to achieve with the constant flow conductivity method and the combination of constant volume method. This provides the possibility of detecting a small amount of sample gas for a long period of time. The third one is the ability to measure the rate of gas evolution at various specific surface areas (ratio of sample surface area to effective pumping rate) of multiple materials to the same sample.