Dissolution of Ir-based alloys including transition metals with sodium peroxide

Yoshinobu Yamamoto; Yoko Yamabe-Mitarai; Naoto Hirosaki; Hiroshi Harada

doi:10.2116/bunsekikagaku.52.341

Dissolution of Ir-based alloys including transition metals with sodium peroxide

Yoshinobu Yamamoto, Yoko Yamabe-Mitarai, Naoto Hirosaki, Hiroshi Harada

Integrated Research Division

Research output: Contribution to journal › Article › peer-review

Abstract

It is well known that Ir is a chemically stable element that is difficult to dissolve, even in a strong acid. Furthermore, when transition metals are added to it, Ir becomes more difficult to dissolve in acid. To solve this problem, we tried to dissolve Ir-Nb, Ir-Zr, Ir-Nb-Zr, Ir-Nb-Pt, Ir-Nb-Pt-Al, and Ir-W alloys using a fusion method at 1073 K in sodium peroxide. This was successful, and the concentration of each element was analyzed with ICP-AES. The result was in good agreement with the nominal concentration. This shows that the fusion method in sodium peroxide and analysis with ICP-AES are suitable for Ir alloys.

Original language	English
Pages (from-to)	341-345
Number of pages	5
Journal	BUNSEKI KAGAKU
Volume	52
Issue number	5
DOIs	https://doi.org/10.2116/bunsekikagaku.52.341
Publication status	Published - 2003 May

Keywords

Dissolving method
Fusion method
ICP-AES
Ir-alloy
Sodium peroxide

ASJC Scopus subject areas

Analytical Chemistry

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title = "Dissolution of Ir-based alloys including transition metals with sodium peroxide",

abstract = "It is well known that Ir is a chemically stable element that is difficult to dissolve, even in a strong acid. Furthermore, when transition metals are added to it, Ir becomes more difficult to dissolve in acid. To solve this problem, we tried to dissolve Ir-Nb, Ir-Zr, Ir-Nb-Zr, Ir-Nb-Pt, Ir-Nb-Pt-Al, and Ir-W alloys using a fusion method at 1073 K in sodium peroxide. This was successful, and the concentration of each element was analyzed with ICP-AES. The result was in good agreement with the nominal concentration. This shows that the fusion method in sodium peroxide and analysis with ICP-AES are suitable for Ir alloys.",

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author = "Yoshinobu Yamamoto and Yoko Yamabe-Mitarai and Naoto Hirosaki and Hiroshi Harada",

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T1 - Dissolution of Ir-based alloys including transition metals with sodium peroxide

AU - Yamamoto, Yoshinobu

AU - Yamabe-Mitarai, Yoko

AU - Hirosaki, Naoto

AU - Harada, Hiroshi

PY - 2003/5

Y1 - 2003/5

N2 - It is well known that Ir is a chemically stable element that is difficult to dissolve, even in a strong acid. Furthermore, when transition metals are added to it, Ir becomes more difficult to dissolve in acid. To solve this problem, we tried to dissolve Ir-Nb, Ir-Zr, Ir-Nb-Zr, Ir-Nb-Pt, Ir-Nb-Pt-Al, and Ir-W alloys using a fusion method at 1073 K in sodium peroxide. This was successful, and the concentration of each element was analyzed with ICP-AES. The result was in good agreement with the nominal concentration. This shows that the fusion method in sodium peroxide and analysis with ICP-AES are suitable for Ir alloys.

AB - It is well known that Ir is a chemically stable element that is difficult to dissolve, even in a strong acid. Furthermore, when transition metals are added to it, Ir becomes more difficult to dissolve in acid. To solve this problem, we tried to dissolve Ir-Nb, Ir-Zr, Ir-Nb-Zr, Ir-Nb-Pt, Ir-Nb-Pt-Al, and Ir-W alloys using a fusion method at 1073 K in sodium peroxide. This was successful, and the concentration of each element was analyzed with ICP-AES. The result was in good agreement with the nominal concentration. This shows that the fusion method in sodium peroxide and analysis with ICP-AES are suitable for Ir alloys.

KW - Dissolving method

KW - Fusion method

KW - ICP-AES

KW - Ir-alloy

KW - Sodium peroxide

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