Reaction sintering and microstructural development in the system Al2O3-AlN

Y W Kim; H C Park; Y B Lee; K D Oh; R Stevens

Reaction sintering and microstructural development in the system Al2O3-AlN

Y W Kim, H C Park, Y B Lee, K D Oh, R Stevens

Department of Mechanical Engineering

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

31 Citations (Scopus)

Abstract

The reaction sintering and microstructural development of alumina with additions of 1-25 mol% AlN have been investigated by heating under 1-atm nitrogen gas at 1600-1800 degreesC. Sintering Al2O3 with 1 mol% AlN addition at 1750 degreesC, resulted in a ceramic with close to theoretical density of alpha -Al2O3 (3.98 g/cm(3)). For the different compositions, the sintered densities decreased with increasing AlN content. This trend was attributed to the presence of secondary phases such as AlON(9Al(2)O(3).5AlN) and phi (5Al(2)O(3).AlN) formed by reacting Al2O3 with AlN. For a given AIN addition, densification increased with sintering temperature, due to Al2O3 and/or AlON grain growth control. The stability of the individual crystalline phases depends on both sintering temperature and batch composition. (C) 2001 Published by Elsevier Science Ltd.

Original language	English
Pages (from-to)	2383-2391
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	21
Issue number	13
Publication status	Published - 2001

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@article{a3e8128edd904b199377e85a5523b4ae,

title = "Reaction sintering and microstructural development in the system Al2O3-AlN",

abstract = "The reaction sintering and microstructural development of alumina with additions of 1-25 mol% AlN have been investigated by heating under 1-atm nitrogen gas at 1600-1800 degreesC. Sintering Al2O3 with 1 mol% AlN addition at 1750 degreesC, resulted in a ceramic with close to theoretical density of alpha -Al2O3 (3.98 g/cm(3)). For the different compositions, the sintered densities decreased with increasing AlN content. This trend was attributed to the presence of secondary phases such as AlON(9Al(2)O(3).5AlN) and phi (5Al(2)O(3).AlN) formed by reacting Al2O3 with AlN. For a given AIN addition, densification increased with sintering temperature, due to Al2O3 and/or AlON grain growth control. The stability of the individual crystalline phases depends on both sintering temperature and batch composition. (C) 2001 Published by Elsevier Science Ltd.",

author = "Kim, {Y W} and Park, {H C} and Lee, {Y B} and Oh, {K D} and R Stevens",

year = "2001",

language = "English",

volume = "21",

pages = "2383--2391",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier",

number = "13",

}

TY - JOUR

T1 - Reaction sintering and microstructural development in the system Al2O3-AlN

AU - Kim, Y W

AU - Park, H C

AU - Lee, Y B

AU - Oh, K D

AU - Stevens, R

PY - 2001

Y1 - 2001

N2 - The reaction sintering and microstructural development of alumina with additions of 1-25 mol% AlN have been investigated by heating under 1-atm nitrogen gas at 1600-1800 degreesC. Sintering Al2O3 with 1 mol% AlN addition at 1750 degreesC, resulted in a ceramic with close to theoretical density of alpha -Al2O3 (3.98 g/cm(3)). For the different compositions, the sintered densities decreased with increasing AlN content. This trend was attributed to the presence of secondary phases such as AlON(9Al(2)O(3).5AlN) and phi (5Al(2)O(3).AlN) formed by reacting Al2O3 with AlN. For a given AIN addition, densification increased with sintering temperature, due to Al2O3 and/or AlON grain growth control. The stability of the individual crystalline phases depends on both sintering temperature and batch composition. (C) 2001 Published by Elsevier Science Ltd.

AB - The reaction sintering and microstructural development of alumina with additions of 1-25 mol% AlN have been investigated by heating under 1-atm nitrogen gas at 1600-1800 degreesC. Sintering Al2O3 with 1 mol% AlN addition at 1750 degreesC, resulted in a ceramic with close to theoretical density of alpha -Al2O3 (3.98 g/cm(3)). For the different compositions, the sintered densities decreased with increasing AlN content. This trend was attributed to the presence of secondary phases such as AlON(9Al(2)O(3).5AlN) and phi (5Al(2)O(3).AlN) formed by reacting Al2O3 with AlN. For a given AIN addition, densification increased with sintering temperature, due to Al2O3 and/or AlON grain growth control. The stability of the individual crystalline phases depends on both sintering temperature and batch composition. (C) 2001 Published by Elsevier Science Ltd.

M3 - Article

VL - 21

SP - 2383

EP - 2391

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 13

ER -