Effect of reaction atmosphere on combustion synthesis of Ti₂AlN

Abstract

Combustion synthesis of Ti 2 AlN was carried out in air and pressurised N 2 respectively. The reaction atmosphere had an evident effect on the phase composition and microstructure of the products. By combustion synthesis in 2 MPa N 2 , Ti 2 AlN was synthesised as the major product, but in the samples prepared in air, Ti 2 AlN was obtained only as a minor phase, and the predominant phases were Ti-Al intermetallics. The reaction mechanism has been studied, suggesting that TiN is a key intermediate in the formation of Ti 2 AlN. It is proposed that, in the combustion synthesis of Ti 2 AlN, the flux of N 2 plays an important role in determining both reaction kinetics and phase composition of the products.

High-temperature hydrogenation behaviour of bulk titanium silicon carbide

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Ti3SiC2 friction material prepared by novel method of infiltration sintering

“…Ti 3 SiC 2 has been received increasing attention owing to its excellent properties. Ti 3 SiC 2 was an important metallic ceramic because it shows both metallic and ceramic properties simultaneously [1][2][3][4][5][6][7][8][9][10]. Like metals, it has good thermal and electric conductivity, relatively soft, higher elastic modulus.…”

Characterisation of graphene nanoplatelets reinforced hot pressed Ti3SiC2ceramic

“…MAX ceramics are a group of layered ternary ceramics, which have received special attentions over the last decades. [1][2][3][4][5] Among these MAX ceramics, titanium silicon carbide (Ti 3 SiC 2 ) exhibits a surprising combination of the properties of both metals and ceramics, such as relative low density, high strength and toughness, good thermal and electrical conductivities and excellent resistance to thermal shock and oxidation below 1300uC, which make it distinctive compared with conventional ceramics. [6][7][8][9][10] Above all, Ti 3 SiC 2 ceramic also possesses good machinability and can be machined using conventional tools, 11,12 which is of great technological importance.…”