Abstract
In order to improve the poor compactibility of atomized bronze powder, the authors re-ex-amined the producing process. First powders containing small amounts of sulfur were produced, then, these powders were subjected to oxidation and finally reduced. The powder obtained showed outstanding compactibility in comparison with that of those powders obtained by mixing each component powder. .
The results were summarized as follows:
1. The optimum oxidizing temperature was 800°C.
2. The retained sulfur in the powder decreased with increasing oxidizing time.
3. The optimum reducing temperature after oxidation was 550°C and the reduced cake was crashed easily.
4. Apparent density decreased with increasing sulfur content and oxidizing time.
5. Weight decrease by Rattler test was found in the low percent range and the powder was found excellent in comparison with conventional atomized bronze powders.
