| 11. |
Thermal‐Mechanical History and the Strength of Magnesium Oxide Single Crystals: II, Etch Pit and Electron Transmission Studies |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 39-46
R. J. STOKES,
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摘要:
Mechanical tests show that the room‐temperatureflowstrength of magnesia single crystals varies with heat treatment. Flow strength depends on the size, density, and distribution of precipitate particles which inhibit the motion of dislocations. The present paper describes optical and electron transmission microscope evidence for a precipitation reaction in magnesium oxide. The observations correlate fairly well with mechanical test data. Mechanical tests also show that mobile dislocations are locked by heating above 600°C. The room‐temperatureyieldstrength increases with time and temperature particularly when the aging temperature exceeds 1000°C. Studies to determine the nature of this locking mechanism are described. Etch pit studies show that dislocations aged above 600°C etch at a slower rate than fresh dislocations. This corresponds precisely with the change in mechanical behavior and both effects are attributed to impurity diffusion to dislocation lines. Electron transmission studies indicate a redistribution of point defects, left by moving dislocations, above 600°C. Eventually these result in a change in dislocation configuration which is considered responsible for the strong locking observed above
ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13146.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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| 12. |
Sintering of Vanadium Dioxide |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 46-47
TOKUYOSHI OHASHI,
AKINORI WATANABE,
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ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13147.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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| 13. |
Grain Growth in Magnesium Oxide Containing Iron Oxide or Titanium Dioxide |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 47-49
G. C. NICHOLSON,
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ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13148.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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| 14. |
Enhanced Activity and the Characterization of Ball‐Milled Alumina |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 49-50
D. LEWIS,
M. W. LINDLEY,
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ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13149.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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| 15. |
Existence of Chromous Ion in the Spinel Solid Solution Series FeCr2O4‐MgCr2O4 |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 50-51
GENE C. ULMER,
WILLIAM B. WHITE,
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ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13150.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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| 16. |
Czochralski Growth of Yttrium‐Gallium Garnet |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 51-51
A. E. PALADINO,
B. D. ROITER,
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ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13151.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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| 17. |
Hot‐Pressing of CrO2 |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 52-53
NOBUO NAKAYAMA,
EIICHI HIROTA,
TOMOZO NISHIKAWA,
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ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13152.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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| 18. |
Silicon Monoxide Technique for Observing Surface Microtopography |
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Journal of the American Ceramic Society,
Volume 49,
Issue 1,
1966,
Page 53-54
H. L. BOURNE,
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ISSN:0002-7820
DOI:10.1111/j.1151-2916.1966.tb13153.x
出版商:Blackwell Publishing Ltd
年代:1966
数据来源: WILEY
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