Solid solution effects on the MgAl2O4-MgGa2O4 system

Kelley R. O'Hara; Jeffrey D. Smith; Todd P. Sander; James G. Hemrick

Solid solution effects on the MgAl₂O₄-MgGa₂O₄ system

Kelley R. O'Hara, Jeffrey D. Smith, Todd P. Sander, James G. Hemrick

Mechanical Properties and Mechanics

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

This study focuses on the effect of solid solution on thermal diffusivity. A common refractory material, MgAl₂O₄, is investigated. Solid solution effects on thermal diffusivity in the MgO-Al₂O₃-Ga₂O₃ system are studied. Various additions of MgGa₂O₄ to MgAl₂O₄ were prepared and the laser flash technique was used to determine thermal diffusivity at temperatures between 200°C and 1300°C. It has been determined that solid solution in the MgAl₂O₄-MgGa₂O₄ system significantly decreases thermal conductivity up to 1000°C. At 200°C thermal conductivity decreased 25% with just 10 mol% addition of MgGa₂O₄ to the system. At 800°C the thermal conductivity decreased 10% with 10 mol% addition. Steady state calculations showed an 11% decrease in heat flux with 10 mol% MgGa₂O₄ considered across a 12 inch brick wall.

Original language	English
Pages	420-423
Number of pages	4
State	Published - 2011
Event	12th Biennial Worldwide Conference on Refractories, UNITECR 2011 - Kyoto, Japan Duration: Oct 30 2011 → Nov 2 2011

Conference

Conference	12th Biennial Worldwide Conference on Refractories, UNITECR 2011
Country/Territory	Japan
City	Kyoto
Period	10/30/11 → 11/2/11

Cite this

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title = "Solid solution effects on the MgAl2O4-MgGa2O4 system",

abstract = "This study focuses on the effect of solid solution on thermal diffusivity. A common refractory material, MgAl2O4, is investigated. Solid solution effects on thermal diffusivity in the MgO-Al2O3-Ga2O3 system are studied. Various additions of MgGa2O4 to MgAl2O4 were prepared and the laser flash technique was used to determine thermal diffusivity at temperatures between 200°C and 1300°C. It has been determined that solid solution in the MgAl2O4-MgGa2O4 system significantly decreases thermal conductivity up to 1000°C. At 200°C thermal conductivity decreased 25% with just 10 mol% addition of MgGa2O4 to the system. At 800°C the thermal conductivity decreased 10% with 10 mol% addition. Steady state calculations showed an 11% decrease in heat flux with 10 mol% MgGa2O4 considered across a 12 inch brick wall.",

author = "O'Hara, {Kelley R.} and Smith, {Jeffrey D.} and Sander, {Todd P.} and Hemrick, {James G.}",

year = "2011",

language = "English",

pages = "420--423",

note = "12th Biennial Worldwide Conference on Refractories, UNITECR 2011 ; Conference date: 30-10-2011 Through 02-11-2011",

}

TY - CONF

T1 - Solid solution effects on the MgAl2O4-MgGa2O4 system

AU - O'Hara, Kelley R.

AU - Smith, Jeffrey D.

AU - Sander, Todd P.

AU - Hemrick, James G.

PY - 2011

Y1 - 2011

N2 - This study focuses on the effect of solid solution on thermal diffusivity. A common refractory material, MgAl2O4, is investigated. Solid solution effects on thermal diffusivity in the MgO-Al2O3-Ga2O3 system are studied. Various additions of MgGa2O4 to MgAl2O4 were prepared and the laser flash technique was used to determine thermal diffusivity at temperatures between 200°C and 1300°C. It has been determined that solid solution in the MgAl2O4-MgGa2O4 system significantly decreases thermal conductivity up to 1000°C. At 200°C thermal conductivity decreased 25% with just 10 mol% addition of MgGa2O4 to the system. At 800°C the thermal conductivity decreased 10% with 10 mol% addition. Steady state calculations showed an 11% decrease in heat flux with 10 mol% MgGa2O4 considered across a 12 inch brick wall.

AB - This study focuses on the effect of solid solution on thermal diffusivity. A common refractory material, MgAl2O4, is investigated. Solid solution effects on thermal diffusivity in the MgO-Al2O3-Ga2O3 system are studied. Various additions of MgGa2O4 to MgAl2O4 were prepared and the laser flash technique was used to determine thermal diffusivity at temperatures between 200°C and 1300°C. It has been determined that solid solution in the MgAl2O4-MgGa2O4 system significantly decreases thermal conductivity up to 1000°C. At 200°C thermal conductivity decreased 25% with just 10 mol% addition of MgGa2O4 to the system. At 800°C the thermal conductivity decreased 10% with 10 mol% addition. Steady state calculations showed an 11% decrease in heat flux with 10 mol% MgGa2O4 considered across a 12 inch brick wall.

UR - http://www.scopus.com/inward/record.url?scp=84890949520&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84890949520

SP - 420

EP - 423

T2 - 12th Biennial Worldwide Conference on Refractories, UNITECR 2011

Y2 - 30 October 2011 through 2 November 2011

ER -

Solid solution effects on the MgAl₂O₄-MgGa₂O₄ system

Abstract

Conference

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