Patent ID: 11918958
Assignee: AT&M ENVIRONMENTAL ENGINEERING TECHNOLOGY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A method for preparing a Fe—Al-based metal porous membrane, wherein the method comprises the steps of:
adding a Fe—Al-based metal powder and a metal fiber powder into an organic-additive-added water-based solvent, and mixing them into a slurry;
casting the slurry, through a casting machine, to form a membrane green body on a metal substrate layer, and letting it dry; and
placing the dried membrane green body in a sintering furnace, to remove organic substances and perform high-temperature sintering and predetermined-temperature reaction synthesis, thus generating a Fe—Al-based metal porous membrane removed off the organic additive and having a uniform pore structure, and forming firm sintering necks between powder particles and powder fibers in the membrane;
the Fe—Al-based metal powder is one or two selected from a Fe3Al powder and a FeAl powder, and the metal fiber powder is one or more selected from 304L, 316L and 310S stainless steel fiber powders; the metal substrate layer is made of one material selected from 310S, 304L and 316L; and, the organic additive include one or more selected from polyvinyl alcohol, methyl cellulose, polyethylene glycol, propanetriol, and dibutyl phthalate;
a Al powder is further added into the Fe—Al-based metal powder.