Analysis and modeling of sintering of Sr-hexaferrite produced by PIM technology

Science of Sintering

关键词: Sintering;    Modeling;    Sr-hexaferrite;    PIM technology;   

DOI  :  10.2298/SOS1101009Z

来源: DOAJ

【 摘 要 】

The powder injection moulding (PIM) technology is lately becoming more andmore significant due to complex design possibilities and good repeatability.This technology requires optimization of all steps starting with material andbinder, injection, debinding and sintering parameters. Sintering is one ofthe key links in this technology. The powder injection moulding process isspecific as during feedstock injection powder particles mixed into the binderdo not come into mechanical contact. Shrinkage during sintering of PIMsamples is high. In this work we have analyzed and modeled the sinteringprocess of isotropic PIM samples of Sr-hexaferrite. The Master SinteringCurve (MSC) principle has been applied to analyze sintering of two types ofPIM Sr-hexaferrite samples with completely removed binder and only theextraction step of the debinding procedure (thermal debinding proceedingsimultaneously with sintering). Influence of the heating rate on resultingsample microstructures has also been analyzed. Influence of the sinteringtime and temperature was analyzed using three different phenomenologicalequations.

【 授权许可】

Unknown