Evaluation of segregation in Roman sestertius coins

被引：8

作者：

Herringer, Susan N. ^{[1
]}

Ryzewski, Krysta ^{[2
]}

Bilheux, Hassina Z. ^{[3
]}

Bilheux, Jean-Christophe ^{[4
]}

Sheldon, Brian W. ^{[1
]}

机构：

[1] Brown Univ, Sch Engn, Box D, Providence, RI 02906 USA

[2] Wayne State Univ, Dept Anthropol, 3054 F-AB,656 W Kirby, Detroit, MI 48226 USA

[3] Oak Ridge Natl Lab, Neutron Sci Directorate, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA

[4] Oak Ridge Natl Lab, Neutron Sci Directorate, Neutron Data Anal & Visualizat, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF MATERIALS SCIENCE | 2018年 / 53卷 / 03期

基金：

美国国家科学基金会;

关键词：

NEUTRON-RADIOGRAPHY; XRF;

D O I：

10.1007/s10853-017-1629-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three brass sestertius coins from the reign of Gordian III were imaged at the Oak Ridge National Laboratory's neutron imaging beam, CG-1D, at the High Flux Isotope Reactor. Tomography results showed a gradual variation in neutron attenuation from one side of the coins to the other or toward the center of the coin. Linear neutron attenuation values calculated from the neutron radiographs, as well as micro-XRF results, suggest that this gradual variation in neutron attenuation is associated with elemental segregation within the coins. The difference in segregation patterns between the coins implies two types of casting methods were utilized to form the coins-vertical and horizontal casting methods.

引用

页码：2161 / 2170

页数：10

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