Recession of BN Coatings in SiC/SiC Composites through Reaction with Water Vapor

2021 ◽  
Author(s):  
Virginia E. Collier ◽  
Wenbo Xu ◽  
Robert M. McMeeking ◽  
Frank W. Zok ◽  
Matthew R. Begley
Keyword(s):  
Water Vapor ◽  
Sic Composites ◽  
Reaction With Water

Fatigue Behavior of 2D C/SiC Composites in Water-vapor Containing Environment at 1300℃

2008 ◽  
Vol 23 (4) ◽  
pp. 729-733 ◽  
Author(s):  
Chi-Dong LIU
Keyword(s):  
Water Vapor ◽  
Fatigue Behavior ◽  
Sic Composites

Kinetics of reaction with water vapor and ab initio study of titanium beryllide

2007 ◽  
Vol 367-370 ◽  
pp. 1057-1062 ◽  
Author(s):  
K. Munakata ◽  
H. Kawamura ◽  
M. Uchida
Keyword(s):  
Water Vapor ◽  
Ab Initio ◽  
Ab Initio Study ◽  
Reaction With Water ◽  
Kinetics Of Reaction ◽  
Kinetics Of

Degradation mechanism of SiCf/SiC composites after long-time water vapor and oxygen corrosion at 1300 oC

2022 ◽  
pp. 110099
Author(s):  
Jin Zhang ◽  
Rongjun Liu ◽  
Yingjie Jian ◽  
Fan Wan ◽  
Yanfei Wang
Keyword(s):  
Water Vapor ◽  
Degradation Mechanism ◽  
Long Time ◽  
Sic Composites

Decomposition of Chlorofluorocarbons by the Reaction with Water Vapor Catalyzed by Iron Oxide Supported on Activated Carbon

1989 ◽  
Vol 18 (11) ◽  
pp. 1901-1904 ◽  
Author(s):  
Susumu Okazaki ◽  
Akito Kurosaki
Keyword(s):  
Activated Carbon ◽  
Water Vapor ◽  
Iron Oxide ◽  
Reaction With Water

Potassium-graphite intercalation compounds prepared from carbon materials of different heat-treatment temperature and their reaction with water vapor

Carbon ◽  
1987 ◽  
Vol 25 (5) ◽  
pp. 691-696 ◽  
Author(s):  
Noboru Akuzawa ◽  
Takashi Seino ◽  
Atsushi Yugeta ◽  
Takeo Amemiya ◽  
Yoichi Takahashi
Keyword(s):  
Heat Treatment ◽  
Water Vapor ◽  
Heat Treatment Temperature ◽  
Carbon Materials ◽  
Treatment Temperature ◽  
Intercalation Compounds ◽  
Graphite Intercalation Compounds ◽  
Graphite Intercalation ◽  
Reaction With Water

scholarly journals Kinetics of a Criegee intermediate that would survive high humidity and may oxidize atmospheric SO2

2015 ◽  
Vol 112 (35) ◽  
pp. 10857-10862 ◽  
Author(s):  
Hao-Li Huang ◽  
Wen Chao ◽  
Jim Jr-Min Lin
Keyword(s):  
Water Vapor ◽  
Atmospheric Chemistry ◽  
High Water ◽  
Water Dimer ◽  
Atmospheric Conditions ◽  
Oxidation Reactions ◽  
Criegee Intermediates ◽  
Reaction With Water ◽  
The Impact ◽  
Kinetics Of

Criegee intermediates are thought to play a role in atmospheric chemistry, in particular, the oxidation of SO2, which produces SO3 and subsequently H2SO4, an important constituent of aerosols and acid rain. However, the impact of such oxidation reactions is affected by the reactions of Criegee intermediates with water vapor, because of high water concentrations in the troposphere. In this work, the kinetics of the reactions of dimethyl substituted Criegee intermediate (CH3)2COO with water vapor and with SO2 were directly measured via UV absorption of (CH3)2COO under near-atmospheric conditions. The results indicate that (i) the water reaction with (CH3)2COO is not fast enough (kH2O < 1.5 × 10−16 cm3s−1) to consume atmospheric (CH3)2COO significantly and (ii) (CH3)2COO reacts with SO2 at a near–gas-kinetic-limit rate (kSO2 = 1.3 × 10−10 cm3s−1). These observations imply a significant fraction of atmospheric (CH3)2COO may survive under humid conditions and react with SO2, very different from the case of the simplest Criegee intermediate CH2OO, in which the reaction with water dimer predominates in the CH2OO decay under typical tropospheric conditions. In addition, a significant pressure dependence was observed for the reaction of (CH3)2COO with SO2, suggesting the use of low pressure rate may underestimate the impact of this reaction. This work demonstrates that the reactivity of a Criegee intermediate toward water vapor strongly depends on its structure, which will influence the main decay pathways and steady-state concentrations for various Criegee intermediates in the atmosphere.

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