Effects of high carbon concentration upon oxygen precipitation and related phenomena in CzSi

1988 ◽  
Vol 64 (2) ◽  
pp. 849-855 ◽  
Author(s):  
S. Hahn ◽  
M. Arst ◽  
K. N. Ritz ◽  
S. Shatas ◽  
H. J. Stein ◽  
...  
Keyword(s):  
Carbon Concentration ◽  
High Carbon ◽  
Oxygen Precipitation ◽  
High Carbon Concentration

Effects of Carbon Concentration Upon Oxygen Precipitation in Cz Si

1987 ◽  
Vol 104 ◽  
Author(s):  
S. Hahn ◽  
M. Arst ◽  
K. N. Ritz ◽  
S. Shatas ◽  
H. J. Stein ◽  
...  
Keyword(s):  
Carbon Content ◽  
Carbon Concentration ◽  
High Carbon ◽  
High Carbon Content ◽  
Oxygen Precipitation ◽  
Oxygen Precipitate ◽  
High Carbon Concentration ◽  
Precipitation Characteristics ◽  
C Complex ◽  
Oxide Precipitate

ABSTRACTEffects of high carbon concentration upon oxygen precipitate formation in Cz silicon have been investigated by combining various furnace and rapid thermal annneals. Even though oxide precipitate density increases with increasing carbon levels, Cs, synchrotron radiation section topographs of processed high carbon content wafers (Cs ∼ 4ppma) exhibit Pendellosung fringes, indicating a strain free bulk state. Our optical microscopic data have also shown very few defect etch features inside the bulk. A model based upon a direct coupling of both SiO2 and Si-C complex formation reactions is used to explain rather unique oxygen precipitation characteristics in the high carbon content Cz Si materials.

Microstructure and Wear Behavior of High-Carbon Concentration CrCoNi Multi-principal Element Alloys

2021 ◽  
Author(s):  
Gustavo Bertoli ◽  
Guilherme Y. Koga ◽  
Fernanda C. Puosso ◽  
Amy J. Clarke ◽  
Claudio S. Kiminami ◽  
...  
Keyword(s):  
Carbon Concentration ◽  
Wear Behavior ◽  
High Carbon ◽  
Principal Element ◽  
High Carbon Concentration

scholarly journals The Role of Retained Austenite and Its Carbon Concentration on Elongation of Low Temperature Bainitic Steels at Different Austenitising Temperature

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 931 ◽  
Author(s):  
Baoqi Dong ◽  
Tingping Hou ◽  
Wen Zhou ◽  
Guohong Zhang ◽  
Kaiming Wu
Keyword(s):  
Low Temperature ◽  
Carbon Concentration ◽  
Retained Austenite ◽  
Trip Effect ◽  
High Carbon ◽  
Volume Percentage ◽  
Bainitic Steels ◽  
High Carbon Concentration ◽  
The Matrix

The influence of austenitising temperature on the tensile properties of low temperature bainitic steel was investigated. With the increasing austenitising temperature, a significant change of elongation was found between 850 and 950 °C, which was changed from 1.0 ± 0.5 to 10.7 ± 2.0%; while there was a slight increase between 950 to 1050 °C (11.2 ± 1.5%). By characterising the retained austenite at necking and matrix, we found that the elongation is obviously correlated with the retained austenite content, and also determined by the volume change of retained austenite during the tensile test. The transformation induced plasticity (TRIP) effect, which contributes to the improve elongation, almost did not occur at 850 °C due to the relatively low volume percentage of retained austenite and its high carbon concentration, which resulted in a very low martensite transformation temperature. With the austenitising, the temperature was increased up to 950 and 1050 °C, and a large volume percentage of retained austenite was observed in the matrix. Meanwhile, a considerable amount of retained austenite has occurred by the TRIP effect because of a moderate carbon content.

scholarly journals Oxidation Reaction of Silicon in Molten Iron of High Carbon Concentration by FeO Containing Slag

1988 ◽  
Vol 74 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Wei PAN ◽  
Masamichi SANO ◽  
Masahiro HIRASAWA ◽  
Kazumi MORI
Keyword(s):  
Carbon Concentration ◽  
Oxidation Reaction ◽  
Molten Iron ◽  
High Carbon ◽  
High Carbon Concentration
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