Anti-carbon deposition mechanism of H2O on nickel-based anode of SOFC: A ReaxFF molecular modelling

2020 ◽  
Vol 45 (56) ◽  
pp. 32423-32432
Author(s):  
Sheng Wu ◽  
Xintong Chen ◽  
Yunzhuo Jiang ◽  
Guanlun Guo ◽  
Bin Huang ◽  
...  
Keyword(s):  
Molecular Modelling ◽  
Carbon Deposition ◽  
Deposition Mechanism

New insights into carbon deposition mechanism of nickel/yttrium-stabilized zirconia cermet from methane by in situ investigation

2019 ◽  
Vol 256 ◽  
pp. 113910 ◽  
Author(s):  
Fangyong Yu ◽  
Jie Xiao ◽  
Yapeng Zhang ◽  
Weizi Cai ◽  
Yongmin Xie ◽  
...  
Keyword(s):  
Carbon Deposition ◽  
Stabilized Zirconia ◽  
Deposition Mechanism ◽  
In Situ Investigation ◽  
Zirconia Cermet

A Raman spectroscopic study of the carbon deposition mechanism on Ni/CGO electrodes during CO/CO2 electrolysis

2014 ◽  
Vol 16 (26) ◽  
pp. 13063-13068 ◽  
Author(s):  
V. Duboviks ◽  
R. C. Maher ◽  
M. Kishimoto ◽  
L. F. Cohen ◽  
N. P. Brandon ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Carbon Deposition ◽  
Ex Situ ◽  
Deposition Mechanism ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Electrolyte Interface ◽  
Co2 Electrolysis

In situ and ex situ Raman analyses of porous Ni/CGO electrodes reveal differences in the amount, location and type of carbon formed during CO/CO2 electrolysis. The majority of the carbon forms in the region of the anode, which lies in the range of ca. 4 micrometers from the electrode–electrolyte interface.

Carbon deposition mechanism and structural changes for zeolite-templated carbons

2021 ◽  
pp. 111311
Author(s):  
Ying Liu ◽  
Jiaxin Wang ◽  
Mohamed A. Serageldin ◽  
Tao Wang ◽  
Wei-Ping Pan
Keyword(s):  
Structural Changes ◽  
Carbon Deposition ◽  
Deposition Mechanism

scholarly journals Carbon deposition mechanism of molten salt cleaning and optimization of multicomponent molten salt formula for remanufacturing

2021 ◽  
Vol 104 (3) ◽  
pp. 003685042110310
Author(s):  
Shuo Zhang ◽  
Shanguo Zhang ◽  
Jianyong Li ◽  
Jianfeng Li ◽  
Xin Zhou ◽  
...  
Keyword(s):  
Molten Salt ◽  
Adsorption Mechanism ◽  
Carbon Deposition ◽  
Salt Bath ◽  
Storage Medium ◽  
Optimal Process ◽  
Deposition Mechanism ◽  
Low Viscosity ◽  
Key Factor ◽  
New Formula

In remanufacturing engineering, cleaning is the key factor for subsequent blank inspection and parts repair. Molten salt has the characteristics of low viscosity, good fluidity, and strong chemical stability. Salt bath cleaning can be comprehensively applied to remove various organic pollutants. Molten salt has the function of self-cleaning. The dirt in the cleaning pool can be decomposed and reused. Moreover, the waste molten salt is massive, and the waste residue is easy to treat. The formation and adsorption mechanism of carbon deposition was explored, and the formation mechanism of carbon deposition was verified by experiments. Then, the existing formula was improved by mixing experiment and compared with the current cleaning method; the cleaning effect was excellent. A new molten salt formula is proposed on the basis of the research on solar thermal storage medium. The composition percentage and the optimal process parameters of the new molten salt formula were determined on the basis of the experimental design of mixture. The cleaning effect of the new formula is good.

Chemical Vapor Deposition (CVD) of ZrC Coatings from ZrCl4-C3H6-H2

2011 ◽  
Vol 189-193 ◽  
pp. 648-652 ◽  
Author(s):  
Qiao Mu Liu ◽  
Li Tong Zhang ◽  
Zhi Xin Meng ◽  
Lai Fei Cheng
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Content ◽  
Flow Rate ◽  
Vapor Deposition ◽  
Deposition Temperature ◽  
Carbon Deposition ◽  
Rough Surfaces ◽  
Chemical Vapor ◽  
Deposition Mechanism ◽  
Spherical Structure

ZrC coatings were prepared by CVD using ZrCl4, C3H6, and H2as the precursors. The mechanisms responsible for the effects of deposition temperature, H2flow rate and inlet C/Zr ratio on the ZrC coatings were studied based on the deposition mechanism of ZrC. The results indicate that the ZrC morphologies change from a loose spherical structure to a cauliflower structure, then to a glassy structure as the deposition temperature increases from 1050°C to 1150°C, then to 1250°C. The carbon content in the ZrC coatings increases with increasing the deposition temperature. Higher inlet C/Zr ratio can lead to rough surfaces and higher carbon content. Reasonable H2concentration can inhibit carbon deposition, and lead to a cauliflower structure.

Microstructural and fractographic characterization of B4C-Al cermets tested under dynamic and static loading

1989 ◽  
Vol 47 ◽  
pp. 562-563
Author(s):  
Gyeung Ho Kim ◽  
Mehmet Sarikaya ◽  
D. L. Milius ◽  
I. A. Aksay
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Fracture Toughness ◽  
Static Loading ◽  
Carbon Deposition ◽  
Full Density ◽  
Unique Combination ◽  
Strong Component ◽  
Reaction Products

Cermets are designed to optimize the mechanical properties of ceramics (hard and strong component) and metals (ductile and tough component) into one system. However, the processing of such systems is a problem in obtaining fully dense composite without deleterious reaction products. In the lightweight (2.65 g/cc) B4C-Al cermet, many of the processing problems have been circumvented. It is now possible to process fully dense B4C-Al cermet with tailored microstructures and achieve unique combination of mechanical properties (fracture strength of over 600 MPa and fracture toughness of 12 MPa-m1/2). In this paper, microstructure and fractography of B4C-Al cermets, tested under dynamic and static loading conditions, are described.The cermet is prepared by infiltration of Al at 1150°C into partially sintered B4C compact under vacuum to full density. Fracture surface replicas were prepared by using cellulose acetate and thin-film carbon deposition. Samples were observed with a Philips 3000 at 100 kV.

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