scholarly journals OBTAINING COATINGS FROM HARD ALLOYS BY EXPLOSIVE LOADING OF MIXTURES OF CHROME CARBIDE AND TITANIUM CARBIDE POWDERS ON METAL BASES

2020 ◽  
pp. 10-13
Author(s):  
A. V. Krokhalev ◽  
V. O. Kharlamov ◽  
E. A. Ivanenko ◽  
D. R. Chernikov ◽  
S. V. Kuz’min ◽  
...  
Keyword(s):  
Phase Composition ◽  
Detonation Wave ◽  
Titanium Carbide ◽  
Explosive Loading ◽  
Hard Alloys ◽  
Mechanism Of Formation ◽  
Metal Substrates ◽  
Composition And Structure ◽  
Structure Of Coatings ◽  
Explosive Pressing

The principal features of the mechanism of formation of coatings from hard alloys during their production by explosive pressing of mixtures of CrC and Ti powders on metal substrates are described. The phase composition and structure of coatings deposited using loading by a plane normally incident detonation wave and sliding loading are considered.

Investigation of the Structure and Distribution of Chemical Elements between the Phases of Hard Alloys of the Cr3C2-Ti System, Obtained at Various Modes of Explosive Compaction

2020 ◽  
Vol 992 ◽  
pp. 487-492
Author(s):  
V.O. Kharlamov ◽  
Aleksandr Vasilevich Krokhalev ◽  
S.V. Kuz’min ◽  
V.I. Lysak
Keyword(s):  
Phase Composition ◽  
Powder Mixture ◽  
Chemical Interaction ◽  
Chemical Elements ◽  
Equilibrium Phase ◽  
Hard Alloys ◽  
Explosive Compaction ◽  
Thermo Calc Software ◽  
Equilibrium Phases ◽  
Explosive Pressing

The Article presents the findings of the studies of the microstructure, chemical and phase composition of the Cr3C2-Ti system alloys obtained by the explosion. Scanning electron microscopy, energy dispersive and x-ray diffraction analyses were used. The program Thermo-Calc software was used to calculate the equilibrium phases. The phase composition of the compact was shown to fully correspond to that of the initial powder mixture during explosive pressing in the modes of heating from 300 ̊С to 600 ̊С. When heated above 600 ̊С, the chemical interaction of the initial components begins with the formation of new boundary phases. Meanwhile, there is a change in the sample destruction nature and a significant increase in hardness, which points to the hard alloy consolidation. The increase in the powder mixture heating in shock waves to 1000 ̊С leads to intensive macrochemical interaction of the powder mixture components and to formation of an equilibrium phase composition. The established temperature limits determine the most appropriate parameters of shock-wave loading when producing hard alloys by explosive pressing.

Role of the phase composition of tungsten containing hard alloys in the formation of a layer of titanium carbide in gas titanizing

1989 ◽  
Vol 28 (7) ◽  
pp. 574-578
Author(s):  
B. V. Zakharov ◽  
A. N. Minkevich ◽  
D. V. Pikunov ◽  
�. R. Ton� ◽  
E. D. Argasova
Keyword(s):  
Phase Composition ◽  
Titanium Carbide ◽  
Hard Alloys

Phase Composition and Structure of Titanium Carbide/Nickel Binder Synthesis Products

2019 ◽  
Vol 55 (11) ◽  
pp. 1104-1110 ◽  
Author(s):  
B. S. Seplyarskii ◽  
R. A. Kochetkov ◽  
T. G. Lisina ◽  
N. I. Abzalov ◽  
M. I. Alymov
Keyword(s):  
Phase Composition ◽  
Titanium Carbide ◽  
Composition And Structure ◽  
Nickel Binder

scholarly journals The Influence of the Synthesis Temperature on Phase Composition and Structure of Tenary Compounds Obtained from the Powder Mixture of the TiH2-Al-C System

2017 ◽  
Vol 18 (4) ◽  
pp. 438-443
Author(s):  
G. A. Bagliuk ◽  
O. V. Suprun ◽  
A. A. Mamonova
Keyword(s):  
Phase Composition ◽  
Intermetallic Compound ◽  
Titanium Carbide ◽  
Metastable Phase ◽  
Synthesis Temperature ◽  
Vacuum Furnace ◽  
Thermal Synthesis ◽  
Ternary Compounds ◽  
Composition And Structure ◽  
Thermal Sintering

This paper presents the results of an investigation of the features of phase and structure formation of a ternary compound during thermal sintering use of compacted TiH2-Al-C powder blends. The thermal sintering was carried out in a vacuum furnace at temperature 1150, 1300, and 1400 0С. The x-ray diffraction pattern and structural analysis show that the main phase after synthesis at 1150 0С is titanium carbide. The ternary Ti2AlC and intermetallic Ti3Al compound were also identified in the phase composition of the alloy. Increasing the sintering temperature to 1300 °C leads to significant increases in the content of Ti2AlC ternary compounds and accordingly decreases the content of titanium carbide TiC.  Is propose a modified model thermal synthesis of ternary compounds of the Ti-Al-C system, which includes the melting of aluminum and its interaction with titanium at low-temperature stages of the process, the formation of the Ti3Al intermetallic compound, formation titanium carbide grains as a result of the interaction of the Al4C3 intermediate metastable phase with titanium or Ti3Al intermetallic compound and the synthesis of ternary Ti2AlC and Ti3AlC2 compounds as a result of the interaction of the Ti3Al intermetallic compound with carbon and Ti2AlC with titanium carbide TiC. 

Tungsten-free hard alloys based on titanium carbide

2000 ◽  
Vol 36 (1) ◽  
pp. 24-27 ◽  
Author(s):  
Yu. V. Levinskii ◽  
A. P. Petrov
Keyword(s):  
Titanium Carbide ◽  
Hard Alloys
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