Characteristics of uranium carbonitride microparticles synthesized using different reaction conditions

Chinthaka M. Silva; Terrence B. Lindemer; Stewart R. Voit; Rodney D. Hunt; Theodore M. Besmann; Kurt A. Terrani; Lance L. Snead

doi:10.1016/j.jnucmat.2014.08.038

Characteristics of uranium carbonitride microparticles synthesized using different reaction conditions

Chinthaka M. Silva, Terrence B. Lindemer, Stewart R. Voit, Rodney D. Hunt, Theodore M. Besmann, Kurt A. Terrani, Lance L. Snead

Fuel Cycle Chemical Technology

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Abstract

Three sets of experimental conditions were tested to synthesize uranium carbonitride (UC₁_-_xN_x) kernels from gel-derived urania-carbon microspheres. Primarily, three sequences of gases were used, N₂ to N₂-4%H₂ to Ar, Ar to N₂ to Ar, and Ar-4%H₂ to N₂-4%H₂ to Ar-4%H₂. Physical and chemical characteristics such as geometrical density, phase purity, and chemical compositions of the synthesized UC₁_-_xN_x were measured. Single-phase kernels were commonly obtained with densities generally ranging from 85% to 93% TD and values of x as high as 0.99. In-depth analysis of the microstrutures of UC₁_-_xN_x has been carried out and is discussed with the objective of large batch fabrication of high density UC₁_-_xN_x kernels.

Original language	English
Pages (from-to)	405-412
Number of pages	8
Journal	Journal of Nuclear Materials
Volume	454
Issue number	1
DOIs	https://doi.org/10.1016/j.jnucmat.2014.08.038
State	Published - Nov 2014

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title = "Characteristics of uranium carbonitride microparticles synthesized using different reaction conditions",

abstract = "Three sets of experimental conditions were tested to synthesize uranium carbonitride (UC1-xNx) kernels from gel-derived urania-carbon microspheres. Primarily, three sequences of gases were used, N2 to N2-4%H2 to Ar, Ar to N2 to Ar, and Ar-4%H2 to N2-4%H2 to Ar-4%H2. Physical and chemical characteristics such as geometrical density, phase purity, and chemical compositions of the synthesized UC1-xNx were measured. Single-phase kernels were commonly obtained with densities generally ranging from 85% to 93% TD and values of x as high as 0.99. In-depth analysis of the microstrutures of UC1-xNx has been carried out and is discussed with the objective of large batch fabrication of high density UC1-xNx kernels.",

author = "Silva, {Chinthaka M.} and Lindemer, {Terrence B.} and Voit, {Stewart R.} and Hunt, {Rodney D.} and Besmann, {Theodore M.} and Terrani, {Kurt A.} and Snead, {Lance L.}",

year = "2014",

month = nov,

doi = "10.1016/j.jnucmat.2014.08.038",

language = "English",

volume = "454",

pages = "405--412",

journal = "Journal of Nuclear Materials",

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T1 - Characteristics of uranium carbonitride microparticles synthesized using different reaction conditions

AU - Silva, Chinthaka M.

AU - Lindemer, Terrence B.

AU - Voit, Stewart R.

AU - Hunt, Rodney D.

AU - Besmann, Theodore M.

AU - Terrani, Kurt A.

AU - Snead, Lance L.

PY - 2014/11

Y1 - 2014/11

N2 - Three sets of experimental conditions were tested to synthesize uranium carbonitride (UC1-xNx) kernels from gel-derived urania-carbon microspheres. Primarily, three sequences of gases were used, N2 to N2-4%H2 to Ar, Ar to N2 to Ar, and Ar-4%H2 to N2-4%H2 to Ar-4%H2. Physical and chemical characteristics such as geometrical density, phase purity, and chemical compositions of the synthesized UC1-xNx were measured. Single-phase kernels were commonly obtained with densities generally ranging from 85% to 93% TD and values of x as high as 0.99. In-depth analysis of the microstrutures of UC1-xNx has been carried out and is discussed with the objective of large batch fabrication of high density UC1-xNx kernels.

AB - Three sets of experimental conditions were tested to synthesize uranium carbonitride (UC1-xNx) kernels from gel-derived urania-carbon microspheres. Primarily, three sequences of gases were used, N2 to N2-4%H2 to Ar, Ar to N2 to Ar, and Ar-4%H2 to N2-4%H2 to Ar-4%H2. Physical and chemical characteristics such as geometrical density, phase purity, and chemical compositions of the synthesized UC1-xNx were measured. Single-phase kernels were commonly obtained with densities generally ranging from 85% to 93% TD and values of x as high as 0.99. In-depth analysis of the microstrutures of UC1-xNx has been carried out and is discussed with the objective of large batch fabrication of high density UC1-xNx kernels.

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VL - 454

SP - 405

EP - 412

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1

ER -

Characteristics of uranium carbonitride microparticles synthesized using different reaction conditions

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