Figure 6

XPS spectra of BKNO3 under accelerated aging. In aging samples of 8 and 16 weeks, B-O 1 s peak was observed. It is an evidence of formation of oxide shells on the boron surface.
XPS spectra of BKNO3 under accelerated aging. In aging samples of 8 and 16 weeks, B-O 1 s peak was observed. It is an evidence of formation of oxide shells on the boron surface.