E-catalog        

The surface structure of the obtained materials by diffusion sintering of calcium hydride-calcium powder TiNi can be described as a combination of TiNi phases and particles of a secondary phase enriched in titanium Ti2Ni or Ti4Ni2 (O, N, C). High-temperature sintering leads to the homogenization of the powder alloy based on titanium nickelide. In order to determine the chemical composition of the material, the alloy surface was studied by energy dispersive microanalysis (EDS). The presence of oxygen and carbon atoms in the composition of the material in the TiNi and Ti2Ni phases was confirmed. Many individual TiNi powder particles that adhered to the surface of the monolithic plate constitute the structure of the obtained sample. The maximum profile height Rz is 322 ym, which corresponds to the geometric dimensions of the particles, with a surface roughness index of Ra = 87 ym. An increase in the sintering temperature leads to the formation of a larger amount of the liquid phase during high-temperature aging, which causes a decrease in the coefficient Ra = 64 ym due to the smoothing of the surface of TiNi powder particles and the convergence of their centers. Varying the temperature-time regimes of diffusion sintering can make it possible to obtain a material with an increased roughness index Ra when using a TiNi powder alloy. The high value of the latter can positively affect the adhesive properties of the implantation material, which has a developed surface.