Low cost Ti–Si intermetallic compound membrane with nano-pores synthesized by in-situ reactive sintering process

Liu, Zhongjun; Liu, Zhuomeng; Ji, Shuai; Wang, Gaosong

doi:10.1038/s41598-020-73869-5

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…A narrow thickness range of synthesized membrane can be explained from two aspects [32]: (1) the sintering stress resulted from the difference of thermal expansion coefficient between porous Ti matrix and silica restricts the thickness growth of the membrane;…”

Section: (D)mentioning

confidence: 99%

“…The previously described researches show the importance of intermetallic compound, but is not all intermetallic membranes for applications of filtration and separation. Our previous work [30][31][32] proposed a novel method of in-situ reactive process within a confined space to prepare Ti-based Ti5Si3 porous membrane using Ti and SiO2. It was found that the pores of membrane are open and throughout the membrane, which guarantees the filtration applications.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Fe doping on preparation of Ti-Si porous membrane via in-situ reactive process

Liu

Zhao

et al. 2023

Preprint

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Asymmetric porous filter element can reach a high filtering accuracy with larger filtration flux, which can enhance the filtration efficiency and reduce the energy consumption when it was applied in separation equipment. A novel porous material of Ti-Si intermetallic compound micro-porous membrane was successfully synthesized with Fe doped Ti mixed powder and SiO2 by the in-situ reactive sintering process. Effects of Fe doping, sintering temperature and the external load pressure on the formation of membrane were systemically studied. The results show that increasing Fe doping amount can celebrate the in-situ reactive process and promote the membrane formation. The synthesized granules on the membrane are well distributed with the size of 1∼3 µm, and the thickness of the membranes is 4∼7 µm. The relative air permeability coefficient of porous membrane reduces raptly with increasing either Fe doping amount, or sintering temperature and the external load pressure. All synthesized membranes show the presence of Ti5Si3 and Ti phases, with a little amount phase of FeTi and FeO. The membrane formation mechanism is due to the large reduction reactivity of Fe doped Ti powder with SiO2, and the asymmetric porous structure of Ti5Si3/Ti was obtained finally.

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Section: (D)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%