Abstract
The expectation has been wide-spread that MIM keeps a good possibility of being an advanced powder processing technique. So far various kinds of studies have been reported for optimization of MIM process, however, there still remain several subjects to be discussed. Especially, it is the most important issue to control the amount of elements in the final products such as the carbon and oxygen. Therefore we have made a basical research about the behavior of those elements in SUS304L steels during debinding and sintering process. In this study, by varying the sintering atmosphere (vacuum pressure) and debinding temperature, we analyzed the carbon and oxygen contents in each step of heat treatment, and successfully made clear the guidlines of ruling reaction as follows;1)In the vacuum sintering process for SUS304L steels, the removal of carbon and oxygen from the compacts progresses under the dominant reaction below;2C(residual carbon)+O2(in furnace and gained as oxides) → 2CO↑2)The carbon and metal oxidation are enhanced over about 1200K. As the oxygen pressure is higher, metal oxidation becomes more dominant.3)During the vacuum sintering, the decrease of carbon content down to approximately 0.05mass% accelerates metal oxidation remarkedly.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Society of Powder and Powder Metallurgy
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
