Preceramic-Modified Reaction-Bonded Silicon Nitride (PM-RBSN): Processing and Properties with Focus on Long-Term High-Temperature Stability

2008 ◽  
pp. 575-582
Author(s):  
Gerhard Wtting ◽  
Lothar Schnfelder ◽  
Andreas Herzog
Keyword(s):  
High Temperature ◽  
Silicon Nitride ◽  
Temperature Stability ◽  
High Temperature Stability

High Temperature Oxidation and Corrosion of Silicon-Based Non-Oxide Ceramics

1999 ◽  
Vol 122 (1) ◽  
pp. 13-18 ◽  
Author(s):  
H. Klemm ◽  
M. Herrmann ◽  
C. Schubert
Keyword(s):  
High Temperature ◽  
Elevated Temperatures ◽  
Microstructural Analysis ◽  
Temperature Stability ◽  
Ambient Air ◽  
High Temperature Stability ◽  
Temperature Oxidation ◽  
Sic Ceramics ◽  
Silicon Based

The present study is focussed on the oxidation behavior of nonoxide silicon-based ceramics. Various Si3N4 and SiC ceramics were examined after long term oxidation tests (up to 5000 h) at 1500°C in ambient air. The damage mechanisms were discussed on the basis of a comprehensive chemical and microstructural analysis of the materials after the oxidation tests. The diffusion of oxygen into the material and its further reaction in the bulk of the material were found to be the most critical factors during long term oxidation treatment at elevated temperatures. However, the resulting damage in the microstructure of the materials can be significantly reduced by purposeful microstructural engineering. Using Si3N4/SiC and Si3N4/MoSi2 composite materials provides the possibility to improve the high temperature stability. [S0742-4795(00)00301-X]

TIMETAL 6-2-4-2

Alloy Digest ◽  
2007 ◽  
Vol 56 (6) ◽  
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Creep Strength ◽  
Temperature Stability ◽  
Heat Treating ◽  
High Temperature Stability ◽  
Temperature Performance

Abstract Timetal 6-2-4-2 has a combination of tensile strength, creep strength, toughness, and high-temperature stability for long-term application at temperatures up to 538 deg C (1000 deg F). This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, and joining. Filing Code: TI-140. Producer or source: Timet.

1D π-d Conjugated Coordination Polymers for Multilevel Memory of Long-Term and High-Temperature Stability

2017 ◽  
Vol 3 (8) ◽  
pp. 1700107 ◽  
Author(s):  
Xue-Feng Cheng ◽  
Er-Bo Shi ◽  
Xiang Hou ◽  
Jie Shu ◽  
Jing-Hui He ◽  
...  
Keyword(s):  
High Temperature ◽  
Coordination Polymers ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Multilevel Memory

scholarly journals Long-Term High-Temperature Stability of Directionally Grown [Bi2Ba2O4]p[CoO2] Rods

Materials ◽  
2017 ◽  
Vol 10 (2) ◽  
pp. 146 ◽  
Author(s):  
Juan Diez ◽  
María Madre ◽  
Miguel Torres ◽  
Shahed Rasekh ◽  
Andrés Sotelo
Keyword(s):  
High Temperature ◽  
Temperature Stability ◽  
High Temperature Stability

High Temperature Stability of Fepure-Si3N4 in Reducing Atmosphere

2014 ◽  
Vol 952 ◽  
pp. 11-15
Author(s):  
Bin Li ◽  
Jun Hong Chen ◽  
Jin Dong Su
Keyword(s):  
High Temperature ◽  
Silicon Nitride ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Reducing Atmosphere ◽  
Xrd Diffraction ◽  
Calculation Results ◽  
Different Temperatures ◽  
The Stability ◽  
Main Components

Iron and silicon nitride powders were mixed in a certain proportion and compacted, then Fepure-Si3N4 were prepared by heating the samples in reducing atmosphere at 1100°C, 1300°C and 1500 °C, respectively. The stability of Fepure-Si3N4 prepared at different temperatures was analyzed by XRD diffraction and theoretical thermodynamics calculation. Results show that the main components of Fepure-Si3N4 at high temperatures in reducing atmosphere are Si3N4 and Si2N2O; Iron exists in Fepure-Si3N4 at 1100°C, and iron had largely converted to Fe3Si phase at 1300°C and 1500°C, which is in accordance with the result of thermodynamic theoretical calculation.

scholarly journals High Temperature Oxidation and Corrosion of Silicon-Based Nonoxide Ceramics

1998 ◽  
Author(s):  
Hagen Klemm ◽  
Mathias Herrmann ◽  
Christian Schubert
Keyword(s):  
High Temperature ◽  
Elevated Temperatures ◽  
Microstructural Analysis ◽  
Temperature Stability ◽  
Ambient Air ◽  
High Temperature Stability ◽  
Temperature Oxidation ◽  
Nonoxide Ceramics ◽  
Silicon Based

The present study is focussed on the oxidation behavior of nonoxide silicon-based ceramics. Various Si3N4 and SiC ceramics were examined after long term oxidation tests (up to 5000 h) at 1500°C in ambient air. The damage mechanisms were discussed on the basis of a comprehensive chemical and microstructural analysis of the materials after the oxidation tests. The diffusion of oxygen into the material and its further reaction in the bulk of the material were found to be the most critical factors during long term oxidation treatment at elevated temperatures. However, the resulting damage in the microstructure of the materials can be significantly reduced by purposeful microstructural engineering. Using Si3N4/SiC and Si3N4/MoSi2 composite materials provides the possibility to improve the high temperature stability.

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