Reactive hot pressing of TiC0.5 ceramic at low applied pressure with 1 wt% Ni additive.

Kannan, R and Rangaraj, L and Jayaram, V (2021) Reactive hot pressing of TiC0.5 ceramic at low applied pressure with 1 wt% Ni additive. Journal of the American Ceramic Society, 104 (11). pp. 5461-5466.

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Official URL: https://www.researchgate.net/publication/352140314...

Abstract

Densification in non‐stoichiometric TiC0.5 ceramic has been studied by reactive hot pressing (RHP) of Ti:0.5C composition at 4–40 MPa, 1200 °C for 60 min. Incomplete reaction and 94% relative density (RD) at a pressure of 4 MPa changed to 99% RD and a negligible amount of residual Ti at 40 MPa. In contrast, the addition of 1 wt.% Ni in the starting Ti‐0.5C powder mixture resulted in full density at a lower pressure of 4 MPa, leading to comparable hardness. It is argued that both, reaction as well as densification, were improved by the formation of transient Ti‐Ni liquid phase. The enhanced RD and residual metallic phase in the nickel‐containing non‐stoichiometric TiC0.5 showed high flexural strength (537 ±79 MPa), which is comparable to values obtained from materials processed at high temperature and pressure.

Item Type: Article
Uncontrolled Keywords: Carbides, Hot pressing, Nonstoichiometry
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
CHEMISTRY AND MATERIALS > Composite Materials
CHEMISTRY AND MATERIALS > Inorganic, Organic and Physical Chemistry
Depositing User: Mrs. Usha Kumari
Date Deposited: 06 Apr 2022 15:32
Last Modified: 06 Apr 2022 15:32
URI: http://nal-ir.nal.res.in/id/eprint/13517

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