Preparation and Characterization of Hollow 316L Stainless Steel Spheres Prepared by Powder Metallurgy

Autor:	Fengchun Jiang, Chunhuan Guo, Wang Chunhe, Tianmiao Yu, Qin Ruonan
Rok vydání:	2021
Předmět:	Materials science Mechanical Engineering Sintering engineering.material Microstructure Polyvinyl alcohol chemistry.chemical_compound Vacuum furnace chemistry Coating Mechanics of Materials Powder metallurgy engineering General Materials Science Polystyrene Composite material Porosity
Zdroj:	Journal of Materials Engineering and Performance. 31:1540-1549
ISSN:	1544-1024 1059-9495
DOI:	10.1007/s11665-021-06246-6
Popis:	In this study, we firstly fabricated green spheres with an automatic coating machine using 316L stainless steel powder, polystyrene particles, and polyvinyl alcohol aqueous solution. These green spheres were then sintered at different temperatures in a high-temperature vacuum furnace to produce hollow metal spheres (HMSs). The effects of the sintering temperatures on the physical parameters, microstructure, and compression performance of the HMSs were investigated. Results show that the diameter and the wall thickness of HMSs decrease gradually with increasing sintering temperatures, while the wall density and overall density of the HMS increase steadily. When the sintering temperature is 1250 °C, the HMSs have the lowest wall porosity (24.44 ± 0.06 %) and the highest overall density (1.59 ± 0.03 g/cm3), which provides the best compressive performance of all the sintering temperatures we evaluated. In this paper, we also discuss the deformation mechanism of HMSs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::61df0303a3dc4d008001a87cea612495 https://doi.org/10.1007/s11665-021-06246-6 Zobrazit plný text záznamu Full text from SpringerLink