scholarly journals Prediction and experimental verification of erosion resistance of gas switch electrode materials

AIP Advances ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 055206
Author(s):  
Cheng Luo ◽  
Peitian Cong ◽  
Tianyang Zhang ◽  
Xiangli Zhong ◽  
Weixi Luo
Keyword(s):  
Experimental Verification ◽  
Electrode Materials ◽  
Erosion Resistance ◽  
Gas Switch

Additive Influence of Carbon and Carbides of Vanadium and Chrome in Anodic Tungsten-Cobalt Materials on their Erosive Fragility and Formation of the Alloyed Layer at ESA of Steels 35

2020 ◽  
Vol 992 ◽  
pp. 683-688
Author(s):  
S.V. Nikolenko ◽  
L.A. Konevtsov ◽  
P.G. Chigrin
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Electrode Materials ◽  
Erosion Resistance ◽  
Roughness Parameter ◽  
Alloyed Layer ◽  
Roughness Parameters ◽  
Processing Modes ◽  
Additive Influence

The effect of electric-spark deposition (ESD) on carbon steel 35 by functional-gradient electrode materials based on tungsten carbide with additions of chromium and vanadium carbides is shown. These dopants increase the total weight gain of the cathode and the mass transfer coefficient at ESD. The change of anode material erosion resistance parameters and roughness of alloyed layers using Ra, Rz, Rp, Rq, Tn parameters were studied. It is shown that an increase in the roughness parameters is observed with a decrease in the duty cycle and with an increase in the duration of the pulses in the period of the electric-spark discharge, as well as with an increase in the total gain of the cathode and with mass transfer coefficient. For the studied anode materials, an averaged series of increasing erosion resistance was obtained for ESA: M1→ BK15→ BK8→ M210% → M28%. and a series of increasing roughness parameters Ra, Rz, Rp, Rq, Tn: BK8→ BK15→ M28%→ M210%→ M1. With a long-term ESD up to t = 20 min, the dependence of the roughness parameter growth on the increase of ΣΔк, Кср and processing regimes and processing modes tsк, tр remains the same. It has been established that the addition of grain growth inhibitors 0.4Cr3C2 + 0.4VC and 0.4VC-0.4Cr3C2 + 0.4C to anodic W-Co materials significantly increases the total cathode weight ΣΔк, mass transfer coefficient Kp and the thickness of the alloyed layer in ESA steel 35, at the same time, the microhardness of the alloyed layer remains almost the same.

A novel ligand with –NH2 and –COOH-decorated Co/Fe-based oxide for an efficient overall water splitting: dual modulation roles of active sites and local electronic structure

2020 ◽  
Vol 10 (18) ◽  
pp. 6266-6273
Author(s):  
Yalan Zhang ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jung Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Water Splitting ◽  
Energy Demand ◽  
Active Sites ◽  
Electrode Materials ◽  
Global Energy ◽  
Overall Water Splitting ◽  
Local Electronic Structure ◽  
Electrochemical Water Splitting

Excellent electrochemical water splitting with remarkable durability can provide a solution to satisfy the increasing global energy demand in which the electrode materials play an important role.

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