after coating, the impurities in the vacuum vessel of the hl 1m measured by the quadrupole mass spectrometer are largely reduced and are lower than those after the siliconization or lithium coating.
装置涂覆后,真空室内的真空度上升,杂质气体的分压强下降,低于单一的硅化或锂涂覆。
the optimum process of siliconization on the carbon steel could be determined by adopting this experimental equation with respect to the specific requirements for the working parts.