Abstract: We analyzed the imported carbonyl nickcl powder, the home-made carbonyl nickel powder, and the surface shape and components of every position of the getter after vaporization, using the scanning electron microscope (SEM) and the transmission electron microscope (TEM). Important data for quality contrast between the carbonyl nickel powders was got and the cause of the "arch" problem was interpretated according to physical mechanisms.
We also made an XPS analysis of the vaporized body for the mixed nitrogen getter, which further proved and substantiated the interpretation of the physical mechanisms for the quality problem.