Investigation of microstructure and corrosion properties of ni-b-doped nanoparticle alloys produced by powder metallurgy

Ni-B-doped nanoparticle alloys have been increasingly utilized in recent times for many years in the areas of automobile, aviation, density, high-speed turbines, where many classical metals have been replaced. When the excellent properties of Ni-B-doped nanoparticle alloys are taken into account and appreciated, the effect of such materials is further increased. Nanoparticle alloys with superior properties are produced by adding different particles together. Here, the amount and distribution of particles are very important factors affecting the mechanical properties of these nanoparticles. In this thesis, Ni-B-doped nanoparticles alloys have been produced utilizing high-energy ball milling technique by altering the percentages of the constituents, i.e., Ni, B and TiC. Samples were sintered at 800 ° C for 2 hours at heating rate 10 ° C / min. The ball milling process duration is 5 h at 350 RPM. Microstructure, mechanical and density properties of specimens were investigated. Optical microscope, scanning electron microscope SEM, ESD and XRD analysis techniques were used to investigate the microstructure analysis of the samples. The experimental densities of the samples were also determined. Hardness properties are measured as mechanical properties. The corrosion test for the samples was carried out using Gamry Potentiostat 3000. As a microstructure, a structure in which the reinforcing particles are partially homogeneously dispersed in the samples obtained. For most of the samples crystal size decreased as anticipated. Peak broadening in XRD curves, EDX analyses indicated amorphous structure. According to SEM analyses, with increasing milling time, average particle size decreased in almost all samples. There are no noteworthy supplementary peaks until 5 h milling. It can be determined from the decrease in the intensity of NiBTi peaks that, the amount of these phases decreased when the milling time increased to5 h. As for the corrosion analysis, the pattern produced by the system indicates reliable and well-functioning corrosion system.