Thermal signatures of Cu metal revealed through oxygen isotope fractionation

被引：0

作者：

Jessica L. Bishop

Ryan Unger

Anthony M. Faiia

Anna Szynkiewicz

John D. Auxier

Howard L. Hall

Maik Lang

机构：

[1] University of Tennessee,Department of Nuclear Engineering

[2] University of Tennessee,Department of Earth and Planetary Sciences

[3] University of Tennessee,Institute for Nuclear Security

[4] Los Alamos National Laboratory,Chemistry Division

来源：

Journal of Radioanalytical and Nuclear Chemistry | 2020年 / 326卷

关键词：

Oxygen; Isotopic fractionation; Raman spectroscopy; Copper; Plutonium; Nuclear forensics; Oxidation; CuO; Cu; O;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Cu metal, surrogate for metallic actinide materials, was subject to accelerated aging through thermal treatment. A multiphase oxide-layer (Cu2O, CuO) was detected, varying with temperature (250–400 °C) and aging time (1–3.5 h). Isotope ratio mass spectrometry revealed temperature-dependent isotopic fractionation of O, evidenced by the enrichment of Cu oxide in 16O isotopes with increasing temperature. Isotopic fractionation occurred initially with atmospheric O, and later through exchange with water vapor. Raman spectra contributed insight on phase fraction and local bonding of Cu oxides. O isotopes could serve as a useful tracer for studying oxide layer growth from aging metallic systems.

引用

页码：1653 / 1662

页数：9

共 37 条

[1]

Haschke J(2000)Surface and corrosion chemistry of plutonium Los Alamos Sci 26 252-273

[2]

Pajo L(2001)Investigation of the oxygen isotopic composition in oxidic uranium compounds as a new property in nuclear forensic science J Anal Chem 371 348-352

[3]

Stakebake J(1977)The high temperature oxidation of plutonium-3.3 a/o Gallium J Electrochem Soc 124 460-465

[4]

Lohrengel M(1987)Growth, corrosion and capacity of copper oxide films investigated by pulse techniques Electrochim Acta 32 733-742

[5]

Chan H(1999)Oxide film formation and oxygen adsorption on copper in aqueous media as probed by surface-enhanced raman spectroscopy J Phys Chem B 103 357-365

[6]

Niedrig-Schedel T(2000)Copper (sub)oxide formation: a surface sensitive characterization of model catalysts J Chem Phys 2 2407-2417

[7]

Yapp C(1993)Oxygen isotopes in iron (III) oxides Chem Geol 85 329-335

[8]

Graham M(1993)The growth and stability of passive films Corros Sci 35 13-18

[9]

Hussey R(1996)The influence of reactive-element coatings on the high-temperature oxidation of pure-Cr and high-Cr-content alloys Oxid Met 45 349-237

[10]

Brady M(2014)Tracer film growth study of hydrogen and oxygen from the corrosion of magnesium in water J Electrochem Soc 35 139-1033

← 1 2 3 4 →