@Article{, title={Preparation and Characterization of ceramic - metal Functionally Graded Materials for Hip Joint Implants}, author={Alaa Abdulhasan Atiyah and Noor S. Ghafil نور غافل الجبوري}, journal={Dijlah Journal مجلة دجلة}, volume={2}, number={1}, pages={45-58}, year={2019}, abstract={The present study included preparation and characterization of step-wise functionally graded materials (FGMs) for hip joint replacements, prepare by using powder technology technique. ceramic – metal FGMs specimens (AZT Group) that made from nano Al2O3, nano 3YPS-ZrO2 and Ti – alloy (Ti-6Al-4V), consist of 10 layers begins with 100% Ti – alloy that gradually decreases and Al2O3and 3YPS-ZrO2 increases, finally ends by 100 %Al2O3. Physical tests for AZT – Group were done in order to characterize FGMs prepared, which includes apparent density & porosity for green compact and for sintered compacts also relative apparent density percentage, all physical tests showed increase in apparent and relative apparent density percentage after sintering process in a range (93-98)% and decrease in porosity (25- 35)% as a range also after sintering process, which it’s a great evident that the time and temp. of sintering process chose carefully and gave optimum properties of FGMs specimens. Mechanical tests such as Vickers microhardness, fracture toughness and residual stresses used to characterize prepared of FGMs. All mechanical tests are presented a gradient in results through the cross – section of FGMs specimens as expected from the gradient of composition that shows a smooth transition from layer to another that eliminate the sharp transition. X-rays diffraction was done to investigate phases appears and SEM and EDS analysis also were done for AZT1, which shows higher properties among their groups, display good distributed of 3YPS – ZrO2 from EDS analytic and there were no agglomerates, which its good evidence of good mixing process and sintering practice.

} }