[19p-H113-1~9] 6.5 Surface Physics, Vacuum

[19p-H113-2] Observation of microelements distribution in heat-resistant steels using TOF-SIMS

〇Norimichi Watanabe¹, Hiroaki Mamiya¹, Fujio Abe², Masataka Ohkubo³, Hideaki Kitazawa¹ (1.NIMS Quantum Beam, 2.NIMS Materials Reliability, 3.AIST Electronics and Manufacturing)

Keywords:TOF-SIMS,ferritic heat-resistant steel,microelement

It is well known that when the ferritic heat-resistant steel is doped with a small amount of boron, the grain boundary structure become stabilized, and creep strength is improved. However, it has not been shown why the structure close to the grain boundary becomes stable in the boron-doped ferritic heat-resistant steel. In this study, we observed the in-plane distribution of boron on the surface of the ferritic heat-resistant steel using TOF-SIMS.