A New measuring method for elemental ratio and Vickers hardness of metal-oxide-boride materials based on Laser-Induced Breakdown Spectroscopy (LIBS)

Abe, Yuta; Otaka, Masahiko; Okazaki, Kodai*; Kawakami, Tomohiko*; Nakagiri, Toshio

Proceedings of 2019 International Congress on Advances in Nuclear Power Plants (ICAPP 2019) (Internet), 7 Pages, 2019/05

Since the hardness of fuel debris containing boride from BC pellet in control rod is estimated to be two times higher as that of oxide, such as UO and ZrO, it is necessary to select the efficient and appropriate operation for removal of fuel debris formed in the severe accident of nuclear power plants. We focused on the characteristics of LIBS, an innovative rapid chemical in-situ analysis technology that enables simultaneous detection of B, O, and other metal elements in fuel debris. Simulated solidified melt specimens were obtained in the plasma heating tests (CMMR-0/-2, performed by JAEA) of simulated fuel assembly (ZrO is used to simulated UO pellet, other materials such as stainless steel, BC are same as fuel assembly). The LIBS signals of (B/O)/Zr ratio showed good linear relationship with Vickers hardness. This technique can be also applied as in-situ assessment tool for elemental composition and Vickers hardness of metal-oxide-boride materials.

Examination of application to material hardness evaluation method by simultaneous multi-spectrum measurement of Laser Induced Breakdown Spectroscopy (LIBS), 2; Application to LIBS material hardness evaluation method

Okazaki, Kodai*; Kawakami, Tomohiko*; Abe, Yuta; Otaka, Masahiko

no journal, , 

no abstracts in English

Study on measurement technique for ZrBx composition and hardness based on Laser Induced Breakdown Spectroscopy (LIBS), 1; Preliminary consideration of measuring conditions

Abe, Yuta; Otaka, Masahiko; Okazaki, Kodai*; Kawakami, Tomohiko*; Oishi, Yuji*

no journal, , 

no abstracts in English

Applicability of metal boride hardness measurement using Laser-Induced Breakdown Spectroscopy (LIBS), 1; Simultaneous measuring of elemental composition information and hardness

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

no journal, , 

no abstracts in English

Development of material hardness evaluation method by simultaneous multi-spectrum measurement of Laser Induced Breakdown Spectroscopy (LIBS), 1; Examination of in-situ hardness measurement method for metal boride

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

no journal, , 

no abstracts in English

Examination of measurement method of the hardness by Laser Induced Breakdown Spectroscopy (LIBS) and multivariate analysis

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

no journal, , 

no abstracts in English

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

no journal, ,