Preparation by SHS-Extrusion Method of Compact Ceramic Electrode Materials Based on Ti–B–Fe System Modified with Nanosized AlN Particles

2020 ◽  
Vol 61 (3) ◽  
pp. 336-340
Author(s):  
A. V. Bolotskaya ◽  
M. V. Mikheev
Keyword(s):  
Electrode Materials ◽  
Shs Extrusion ◽  
Extrusion Method

scholarly journals Regularities of the Effect of Process Parameters of SHS-Extrusion on the Structure and Properties of Long-Dimensional Rods from TiB / 30 wt. % Ti Materials

2020 ◽  
pp. 064-067
Author(s):  
A.S. Konstantinov ◽  
◽  
M.S. Antipov ◽  
P.M. Bazhin ◽  
A.M. Stolin ◽  
...  
Keyword(s):  
Process Parameters ◽  
Delay Time ◽  
Structural Features ◽  
Time Interval ◽  
Shs Extrusion ◽  
The Press ◽  
Optimal Values ◽  
Extrusion Method ◽  
Physical And Mechanical Characteristics

In this paper, the effect of the process parameters of the SHS-extrusion method (the delay time before applying pressure, the speed of movement of the press plunger) on the length and quality of extruded cylindrical rods with a diameter of 3 mm, obtained from TiB – 30 wt. % Ti materials, was studied. Their optimal values were determined: the delay time interval was 3–3.5 s, the press plunger speed interval was 40–50 mm/s. Using the results of SEM and XRD, the structural features of the obtained materials were studied, and their texture was determined. The physical and mechanical characteristics of the obtained materials were measured: porosity, hardness, microhardness.

Extraction of compact ceramic electrode materials based on the Ti‒B‒Fe system modified by nanosized AlN particles by SHS extrusion

2020 ◽  
pp. 51-55
Author(s):  
A. V. Bolotskaya ◽  
M. V. Mikheev
Keyword(s):  
Phase Composition ◽  
Aluminum Nitride ◽  
Electrode Materials ◽  
Combustion Characteristics ◽  
Nanosized Particles ◽  
Shs Extrusion ◽  
Effect Of Additives ◽  
Initial Charge

Compact ceramic electrode materials based on the Ti‒B‒Fe system modified with nanosized particles of aluminum nitride (up to 15 wt. %) were obtained by SHS extrusion. The effect of additives on the combustion characteristics of the studied system, as well as on the structure and phase composition of the obtained materials, is studied. The addition of aluminum nitride increases the content of boride and nitride phases in the final product. It was found that the introduction of modifying nanosized particles of aluminum nitride into the initial charge leads to the grinding of grains of boride and nitride phases, which together increases the microhardness by 10 %, in comparison with unmodified samples.

Preparation by SHS-extrusion method of compact ceramic materials based on the Ti‒B system, modified with nanosized Si3N4 particles

2021 ◽  
pp. 132-135
Author(s):  
A. V. Bolotskaya ◽  
M. V. Mikheev ◽  
P. M. Bazhin ◽  
A. M. Stolin ◽  
Yu. V. Titova
Keyword(s):  
Phase Composition ◽  
Crack Resistance ◽  
Titanium Diboride ◽  
Mechanical Characteristics ◽  
Ceramic Materials ◽  
Shs Extrusion ◽  
Structure Phase ◽  
Initial Charge ◽  
Extrusion Method ◽  
Physical And Mechanical Characteristics

Compact ceramic materials based on the Ti‒B system modified with 5 wt. % of nanosized Si3N4 particles. The results of studies of the structure, phase composition, and physical and mechanical characteristics of the materials obtained are presented. It is shown that the addition of Si3N4 promotes the formation of new phases, in particular, titanium diboride and nitride in the final product. It was found that the introduction of modifying nanosized Si3N4 particles into the initial charge leads to an increase in hardness and microhardness by 15‒20 %, as well as to an increase in crack resistance by 1,5 times in comparison with unmodified samples.

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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