Manufacturing of AZ91D Implants with Micro-Scale Features by Powder Metallurgy Route

摘要

The main purpose of this investigation was to verify the feasibility of manufacturing porous structure of AZ91D alloy with micro surface features. In summary, porosity can be controlled by manipulating the experiment parameters. The compaction temperature should also be higher than 100℃ in order to achieve strong bonding between particles. Moreover, de-inserting problems generally occur at compaction temperatures below 100 ℃. Also, there was no oxidation problem because the working temperatures were relatively low at compaction stage. However, sufficient gas flow should be provided to prevent oxidation of magnesium during heat treatment process. And there is a need for obtaining uniform particles to get better results from image processing technique.