Browse > Article
http://dx.doi.org/10.4191/KCERS.2002.39.1.051

Effect of Starting Material for MgG on the Mechanical Properties of Alumina Ceramics  

조용익 (전남대학교 공업기술연구소)
정상귀 (전남대학교 공업기술연구소)
조성용 (전남대학교 공업기술연구소)
김승재 (전남대학교 공업기술연구소)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.1, 2002 , pp. 51-56 More about this Journal
Abstract
The effect of kind of starting materials used for a sintering additive. magnesium acetate and magnesium nitrate, on the mechanical properties of alumina sintered body made by adding 1000 ppm of the additives, respectively, was investigated. As for the alumina sintered bodies prepared from magnesium acetate and magnesium nitrate, we observed that their relative densities decreased rapidly with increasing sintering temperature 1$600^{\circ}C$. Outer layer of alumina bodies had a duplex microstructure consisting of pores and grain growth. Also the inner layer had a second phase between alumina grain boundaries. By EPMA analysis, we confirmed that the grain boundary phase was a compound containing Mg.
Keywords
$Al_2$$O_3$granules; Sintering additive; Spray-dryer; Weibull modulus; Flexural strength;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Processing Related Fracture Origins: II, Agglomerate Motion and Cracklike Internal Surfaces Caused by Differential Sintering /
[ F. F. Lange;M. Metcalf ] / J. Am. Ceram. Soc.   DOI   ScienceOn
2 Effect of Processing Conditions on the Characteristics of Pores in Hot Isostatically Pressed Alumina /
[ K. Uematsu;M. Sekiguchi;J. Y. Kim;K. Saito;Y. Mutoh;M. Inoue;Y. Fujino ] / J. Mater. Sci.   DOI   ScienceOn
3 Grain-growth Kinetics for Alumina in the Absence of a Liquid Phase /
[ S. J. Bennison;M. P. Harmer ] / J. Am. Ceram. Soc.
4 Effect of Sintering Atmosphere on Densification of MgO-doped <TEX>$Al_2O_3$</TEX> /
[ Y. K. Paek;K. Y. Eun;S. J. L. Kang ] / J. Am. Ceram. Soc.
5 Effect of a Liquid Phase on the Morphology of Grain Growth in Alumina /
[ W. A. Kaysser;M. Sprissler;C. A. Handwerker;J. E. Blendell ] / J. Am. Ceram. Soc.   DOI   ScienceOn
6 Defect Reaction and the Controlling Mechanism in the Sintering of Magnesium Aluminate Spinel /
[ C-J. Ting;H-Y. Lu ] / J. Am. Ceram. Soc.   DOI   ScienceOn
7 Powder Processing Science and Technology for Increased Reliability /
[ F. F. Lange ] / J. Am. Ceram. Soc.   DOI   ScienceOn
8 Relevance of the Fracture Strength to Process-related Defects in Alumina Ceramics /
[ M. Naito;T. Hotta;H. Abe;N. Shinohara;Y. I. Cho;M. Okumiya;K. Uematsu ] / Mater. Trans.   DOI   ScienceOn
9 Effect of Seasons on Density, Strength of Alumina /
[ N. Shinohara;M. Okumiya;T. Hotta;K. Nakahira;M. Natio;K. Uematsu ] / Am. Ceram. Soc. Bull.
10 Internal Structure and Weibull Modulus of <TEX>$Al_2O_3$</TEX> Ceramics Sintered with Addition of MgO /
[ Y. I. Cho;S. K. Yoo;S. G. Chung;S. Y. Cho;S. J. Kim;M. Okumiya ] / J. Kor. Ceram. Soc.   과학기술학회마을
11 Influence of Slurry Parameters on the Characteristics of Spray-dried Granules /
[ W. J. Walker, Jr.;J. S. Reed;S. K. Verma ] / J. Am. Ceram. Soc.   DOI
12 Effects of Chemical Inhomogeneities on Grain Growth and Microstructure in <TEX>$Al_2O_3$</TEX> /
[ C. A. Handwerker;P. A. Morris;R. L. Coble ] / J. Am. Ceram. Soc.   DOI   ScienceOn
13 Influence of Granules Chracteristics and Compaction pressure on the Microstructure and Mechanical Properties of Sintered Alumina /
[ Y. I. Cho;S. G. Chung;S. Y. Cho;S. J. Kim;N. Shinohara;M. Okumiya ] / J. Kor. Ceram. Soc.   과학기술학회마을
14 Critical Concentration of MgO for the Prevention of Abnormal Grain Growth in Alumina /
[ S. I. Bae;S. Baik ] / J. Am. Ceram. Soc.   DOI   ScienceOn
15 Influence of Spray-dry Slurry Flocculation on the Structure of Sintered Silicon Nitride /
[ H. Takahashi;N. Shinohara;K. Uematsu ] / J. Ceram. Soc. Jpn.   DOI
16 Formation and Control of Agglomerates in Alumina Powder /
[ M. Kitayama;J. A. Pask ] / J. Am. Ceram. Soc.   DOI   ScienceOn
17 A Study on the Preparation and Sinterability of MgO-doped <TEX>$Al_2O_3$</TEX> Powders by Spray Pyrolysis Method /
[ J. H. Park;K. S. Cho;K. H. Song ] / J. Kor. Ceram. Soc.   과학기술학회마을