Passive oxidation kinetics for glass and cristobalite formation on Hi-Nicalon™-S SiC fibers in steam

2018 ◽  
Vol 101 (11) ◽  
pp. 5241-5256 ◽  
Author(s):  
Randall S. Hay ◽  
Randall Corns
Keyword(s):  
Oxidation Kinetics ◽  
Sic Fibers ◽  
Passive Oxidation

Passive-Oxidation Kinetics of High-Purity Silicon Carbide from 800o to 1100oC

1996 ◽  
Vol 79 (11) ◽  
pp. 2897-2911 ◽  
Author(s):  
C. Eric Ramberg ◽  
Gary Cruciani ◽  
Karl E. Spear ◽  
Richard E. Tressler ◽  
Charles F. Ramberg
Keyword(s):  
Silicon Carbide ◽  
High Purity ◽  
Oxidation Kinetics ◽  
Passive Oxidation ◽  
High Purity Silicon ◽  
Kinetics Of

scholarly journals Oxidation Kinetics and Mechanical Property of Stoichiometric SiC Fibers (Hi-Nicalon-S).

2000 ◽  
Vol 108 (1264) ◽  
pp. 1096-1102 ◽  
Author(s):  
Toshio SHIMOO ◽  
Hiroshi TAKEUCHI ◽  
Michio TAKEDA ◽  
Kiyohito OKAMURA
Keyword(s):  
Mechanical Property ◽  
Oxidation Kinetics ◽  
Sic Fibers

Passive-Oxidation Kinetics of SiC Microparticles

2004 ◽  
Vol 87 (7) ◽  
pp. 1301-1305 ◽  
Author(s):  
D. Das ◽  
J. Farjas ◽  
P. Roura
Keyword(s):  
Oxidation Kinetics ◽  
Passive Oxidation ◽  
Kinetics Of

TEM characterization of reaction zone in a SiC fiber-reinforced titanium alloy

1988 ◽  
Vol 46 ◽  
pp. 738-739
Author(s):  
G. Das ◽  
R. E. Omlor
Keyword(s):  
Titanium Alloys ◽  
Reaction Zone ◽  
Carbon Layer ◽  
Fiber Reinforced ◽  
Reaction Products ◽  
Sic Fibers ◽  
Sic Fiber ◽  
The Matrix ◽  
Immense Potential

Fiber reinforced titanium alloys hold immense potential for applications in the aerospace industry. However, chemical reaction between the fibers and the titanium alloys at fabrication temperatures leads to the formation of brittle reaction products which limits their development. In the present study, coated SiC fibers have been used to evaluate the effects of surface coating on the reaction zone in the SiC/IMI829 system.IMI829 (Ti-5.5A1-3.5Sn-3.0Zr-0.3Mo-1Nb-0.3Si), a near alpha alloy, in the form of PREP powder (-35 mesh), was used a茸 the matrix. CVD grown AVCO SCS-6 SiC fibers were used as discontinuous reinforcements. These fibers of 142μm diameter contained an overlayer with high Si/C ratio on top of an amorphous carbon layer, the thickness of the coating being ∽ 1μm. SCS-6 fibers, broken into ∽ 2mm lengths, were mixed with IMI829 powder (representing < 0.1vol%) and the mixture was consolidated by HIP'ing at 871°C/0. 28GPa/4h.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

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