In-situ study of the process of self-propagating high-temperature synthesis of titanium carbide with a nichrome binder

被引：6

作者：

Bazhin, Pavel ^{[1
,2
]}

Antipov, Mikhail ^{[1
]}

Konstantinov, Alexander ^{[1
]}

Khomenko, Natalia ^{[1
]}

机构：

[1] Russian Acad Sci, Merzhanov Inst Struct Macrokinet & Mat Sci, Ul Akad Osipyana 8, Chernogolovka 142432, Moscow Region, Russia

[2] Natl Univ Sci & Technol MISIS, NUST MISIS, Leninskiy Prospekt 4, Moscow 119991, Russia

来源：

MATERIALS LETTERS | 2022年 / 308卷

关键词：

Ceramic composites; Phase transformation; Phase diagrams; X-ray techniques; POWDERS; SHS;

D O I：

10.1016/j.matlet.2021.131086

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, first experimental results of an in-situ study of self-propagating high-temperature synthesis of titanium carbide with a nichrome binder have been obtained. As the initial powder components, Ti(56)-C(14)-NiCr(30) (wt %) have been chosen. The results of time-resolved X-ray diffraction of the phase formation process of the composition under study are presented. Based on the study, it has been found that an exothermic reaction of titanium with soot occurs in the course of SHS, which leads to the melting of the NiCr metal powder. It has been shown that the NiCr metal binder is inert to the initial components and synthesis products. It has been found that the metal binder changes its stoichiometry after melting and subsequent crystallization. To determine the stoichiometry of the resulting alloy, a practical implementation of the linear dependence of Vegard's law was presented. Based on the plotted dependences, it was found that the metal binder has the following modification Ni66.397Cr33.603 with the unit cell parameter a = 3.5534 angstrom.

引用

页数：3

共 14 条

[1] Combustion of Ti–Al–C compacts in air and helium: A TRXRD study [J].

Bazhin P.M. ;

Kovalev D.Y. ;

Luginina M.A. ;

Averichev O.A. .

International Journal of Self-Propagating High-Temperature Synthesis, 2016, 25 (01) :30-34

[2] TiC-NiCr thermal spray coatings as an alternative to WC-CoCr and Cr3C2-NiCr [J].

Bolelli, Giovanni ;

Colella, Alberto ;

Lusvarghi, Luca ;

Morelli, Stefania ;

Puddu, Pietro ;

Righetti, Enrico ;

Sassatelli, Paolo ;

Testa, Veronica .

WEAR, 2020, 450

[3] Effect of the Microstructure of Cermet Powders on the Performance Characteristics of Thermal Spray Coatings [J].

Chesnokov, A. E. ;

Smirnov, A. V. ;

Batraev, I. S. .

JOURNAL OF SURFACE INVESTIGATION, 2019, 13 (04) :628-634

[4] Study of the Influence of Volume Fraction of Ceramic Inclusions in NiCr-TiC Composite with Columnar Structure on Its Mechanical Behavior [J].

Eremina, Galina M. ;

Smolin, Alexey Yu. ;

Shilko, Evgeny V. .

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2017 (AMHS'17), 2017, 1909

[5] Bulk Nanocrystalline Ferrite Stabilized through Grain Boundary Carbon Segregation [J].