Development of boride hardness evaluation technique by multi-spectrum measurement employing LIBS

Makuuchi, Etsuyo*; Abe, Yuta  ; Nagayama, Sakiko*; Okazaki, Kodai*; Kawakami, Tomohiko*; Sun, Y.*; Oishi, Yuji*; Otaka, Masahiko

A boride is an interesting material that has both metallic and ceramic properties (high melting point/ hardness, corrosion resistance, electrical/thermal conductivity), which are known to be hard material dependent on boron concentration. In this study, a feasibility of LIBS system as an in-situ measurement for hardness of MxBy (M: Zr, Fe) was studied in two steps; i) the actual survey of hardness characteristics of MxBy using various specimens changing boron concentration, and ii) the identification performance of composition ratio of LIBS.