Ion Microprobe Analysis for Niobium Hydride in Hydrogen-Embrittled Niobium

Peter Williams; Charles A. Evans; Martin L. Grossbeck; Howard K. Birnbaum

doi:10.1021/ac60371a017

Ion Microprobe Analysis for Niobium Hydride in Hydrogen-Embrittled Niobium

Peter Williams, Charles A. Evans, Martin L. Grossbeck, Howard K. Birnbaum

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

36 Scopus citations

Abstract

A hydrogen-embrittled niobium sample, fractured above the solvus temperature, has been examined using an ion microprobe. Ion images taken with Nb⁺, NbH⁺, H⁺, and NbO⁺ ions reveal strong enhancement of the emission of the hydrogen-containing ion species from the walls of the main fracture and from a secondary crack. Comparison of the NbH⁺/Nb⁺ ion ratio from the crack walls with that observed from known niobium hydride precipitates demonstrates that the hydrogen-rich phase found on the fracture walls is niobium hydride. The results confirm a postulated mechanism of hydrogen embrittlement by stress-induced precipitation of niobium hydride.

Original language	English (US)
Pages (from-to)	964-968
Number of pages	5
Journal	Analytical chemistry
Volume	48
Issue number	7
DOIs	https://doi.org/10.1021/ac60371a017
State	Published - Jun 1 1976
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry

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title = "Ion Microprobe Analysis for Niobium Hydride in Hydrogen-Embrittled Niobium",

abstract = "A hydrogen-embrittled niobium sample, fractured above the solvus temperature, has been examined using an ion microprobe. Ion images taken with Nb+, NbH+, H+, and NbO+ ions reveal strong enhancement of the emission of the hydrogen-containing ion species from the walls of the main fracture and from a secondary crack. Comparison of the NbH+/Nb+ ion ratio from the crack walls with that observed from known niobium hydride precipitates demonstrates that the hydrogen-rich phase found on the fracture walls is niobium hydride. The results confirm a postulated mechanism of hydrogen embrittlement by stress-induced precipitation of niobium hydride.",

author = "Peter Williams and Evans, {Charles A.} and Grossbeck, {Martin L.} and Birnbaum, {Howard K.}",

year = "1976",

month = jun,

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doi = "10.1021/ac60371a017",

language = "English (US)",

volume = "48",

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journal = "Analytical chemistry",

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TY - JOUR

T1 - Ion Microprobe Analysis for Niobium Hydride in Hydrogen-Embrittled Niobium

AU - Williams, Peter

AU - Evans, Charles A.

AU - Grossbeck, Martin L.

AU - Birnbaum, Howard K.

PY - 1976/6/1

Y1 - 1976/6/1

N2 - A hydrogen-embrittled niobium sample, fractured above the solvus temperature, has been examined using an ion microprobe. Ion images taken with Nb+, NbH+, H+, and NbO+ ions reveal strong enhancement of the emission of the hydrogen-containing ion species from the walls of the main fracture and from a secondary crack. Comparison of the NbH+/Nb+ ion ratio from the crack walls with that observed from known niobium hydride precipitates demonstrates that the hydrogen-rich phase found on the fracture walls is niobium hydride. The results confirm a postulated mechanism of hydrogen embrittlement by stress-induced precipitation of niobium hydride.

AB - A hydrogen-embrittled niobium sample, fractured above the solvus temperature, has been examined using an ion microprobe. Ion images taken with Nb+, NbH+, H+, and NbO+ ions reveal strong enhancement of the emission of the hydrogen-containing ion species from the walls of the main fracture and from a secondary crack. Comparison of the NbH+/Nb+ ion ratio from the crack walls with that observed from known niobium hydride precipitates demonstrates that the hydrogen-rich phase found on the fracture walls is niobium hydride. The results confirm a postulated mechanism of hydrogen embrittlement by stress-induced precipitation of niobium hydride.

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DO - 10.1021/ac60371a017

M3 - Article

AN - SCOPUS:0016961432

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VL - 48

SP - 964

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JO - Analytical chemistry

JF - Analytical chemistry

IS - 7

ER -

Ion Microprobe Analysis for Niobium Hydride in Hydrogen-Embrittled Niobium

Abstract

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