Effect of Sintering Temperature on the Microstructure and Mechanical Properties of Ti6Al4V/WA Composite Fabricated by Powder Injection Molding
Composite biomaterials are in high demand today in medical field.The combination of bioactive wollastonite glass ceramic with the biocompatibility alloy Ti6Al4V can be a good candidate for implant application.Different materials have different sintering temperature.Determination of sintering temperature for Ti6Al4V/WA composite is very important to get well sintered part.Rheological properties of Ti6Al4V/W feedstock show pseudoplastic behavior with low activation energy.The feedstock was successfully injected as a green part with no defects.The green part was solvent debound for 6 hours in heptane and thermal debound in argon environment for 1 hour.The brown part was successfully sintered at 1300℃ for 3 hours with 5℃/min of heating and cooling rate.The average sintered density was 4.12 g/cm3 which is 97.5%from the theoretical density.The highest Youngs modulus obtained was 18.10 GPa.Increasing sintering temperature causes mechanical properties to decrease due to changes occurring on the physical properties of the composite materials but still in the range of human bones strength.This indicates that the Ti6Al4V/W composite is suitable for bone implant applications.
Ti6Al4V/WA composite Powder injection molding Sintering Microstructure Mechanical properties
Ramli Mohd Ikram Sulong Abu Bakar Muhamad Norhamidi Muchtar Andanastuti Zakaria Mohd Yusuf
Department of Mechanical and Materials Engineering,Faculty of Engineering and Build Environment,Universiti Kebangsaan Malaysia,43600,Bangi,Selangor,Malaysia
国际会议
北京
英文
558-563
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）