This paper reports the synthesis and the performance of polymer-derived ceramic filters for molten metal filtration. Two different filter types were studied: foam filters produced from flexible polyurethane (PU) foams and additive manufacturing (AM) filters produced from thermoplastic polyurethane (TPU) cellular structure, and the results from all filter types were compared with that of the commercially used SiC foam filters. In both cases, the urethane-based polymeric template was impregnated with the preceramic solution, followed by pyrolysis. The produced ceramic components were then used to filter a molten Al alloy (A357), and the resulting Al samples were characterized for their mechanical properties. When filters were used, more reproducible and reliable mechanical properties were achieved compared to the samples obtained without any filtration. Among the different filters tested, the foam filters demonstrated better performance in comparison with the AM ceramic filters due probably to the three-dimensional interconnected porosity compared with the unidirectional cellular structure of the AM ceramic filters.[GRAPHICS].

Polymer-derived ceramic molten metal filters / Semerci, Tugce; Dizdar, Kerem Can; Kulkarni, Apoorv; Dispinar, Derya; Soraru, Gian Domenico; Vakifahmetoglu, Cekdar. - In: JOURNAL OF MATERIALS SCIENCE. - ISSN 0022-2461. - ELETTRONICO. - 57:31(2022), pp. 14723-14734. [10.1007/s10853-022-07542-9]

Polymer-derived ceramic molten metal filters

Semerci, Tugce
Primo
;
Kulkarni, Apoorv;Soraru, Gian Domenico
Ultimo
;
2022-01-01

Abstract

This paper reports the synthesis and the performance of polymer-derived ceramic filters for molten metal filtration. Two different filter types were studied: foam filters produced from flexible polyurethane (PU) foams and additive manufacturing (AM) filters produced from thermoplastic polyurethane (TPU) cellular structure, and the results from all filter types were compared with that of the commercially used SiC foam filters. In both cases, the urethane-based polymeric template was impregnated with the preceramic solution, followed by pyrolysis. The produced ceramic components were then used to filter a molten Al alloy (A357), and the resulting Al samples were characterized for their mechanical properties. When filters were used, more reproducible and reliable mechanical properties were achieved compared to the samples obtained without any filtration. Among the different filters tested, the foam filters demonstrated better performance in comparison with the AM ceramic filters due probably to the three-dimensional interconnected porosity compared with the unidirectional cellular structure of the AM ceramic filters.[GRAPHICS].
2022
31
Semerci, Tugce; Dizdar, Kerem Can; Kulkarni, Apoorv; Dispinar, Derya; Soraru, Gian Domenico; Vakifahmetoglu, Cekdar
Polymer-derived ceramic molten metal filters / Semerci, Tugce; Dizdar, Kerem Can; Kulkarni, Apoorv; Dispinar, Derya; Soraru, Gian Domenico; Vakifahmetoglu, Cekdar. - In: JOURNAL OF MATERIALS SCIENCE. - ISSN 0022-2461. - ELETTRONICO. - 57:31(2022), pp. 14723-14734. [10.1007/s10853-022-07542-9]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/376654
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