Modelling the Elements Reaction–Diffusion Behavior on Interface of Ti/Al₂O₃ Composite Prepared by Hot Pressing Sintering

Abstract

Element reaction−diffusion of Ti/Al2O3 composite which was fabricated at various sintering temperatures, holding times, and a sintering pressure of 30 MPa has been discussed in the present research. Results show that the thickness of the reaction layer of the Ti-Al2O3 interface was increased in exponential form in correspondence with the increase of the sintering temperature. Furthermore, according to analysis, the relationship between the thickness of the interface reaction layer, sintering temperature, and heat preservation time acquiring the kinetic equation of interfacial reaction of Ti/Al2O3 composite was d = 182.5exp(−6.6 × 104/RT)t0.48 by linear fitting.

Keywords

• ti/al₂o₃ composite
• elements reaction–diffusion
• kinetic equation