FOAM NICHROME AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2024/036691

A1

A foam nichrome and a preparation method therefor. The preparation method comprises: (1) obtaining nickel foam; (2) under vacuum, mixing the nickel foam and an alloy material, and carrying out alloy treatment to obtain a composite material; and (3) carrying out thermal diffusion on the composite material to obtain foam nichrome. By controlling the composition of the alloy material and carrying out alloying under a vacuum condition, problems such as powder loss caused by introduction of ammonium chloride can be avoided. By using a reducing agent to remove an oxide film on the surface of the chromium powder and by using an activator to promote alloying of chromium and nickel foam, impurities generated during this process can be removed under the vacuum condition, avoiding effects on the alloying process. By means of the mutual cooperation of said materials and conditions, the generated foam nichrome exhibits a dense and smooth surface, solving the problems, such as powder stickiness, high cost and poor safety, in the current process.

SHEN WEI (CN)

PCT/CN2022/120121

February 22, 2024

September 21, 2022

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SHEN WEI (CN)

C22C1/08; C23C10/38; C22C19/05

CN102127731A	2011-07-20
CN103328693A	2013-09-25
US3690934A	1972-09-12
GB1263704A	1972-02-16
JP2012111988A	2012-06-14
CN104691046A	2015-06-10
CN103249850A	2013-08-14
CN102121090A	2011-07-13
US20140087206A1	2014-03-27
US20160130678A1	2016-05-12
US20080031767A1	2008-02-07

BEIJING ZHI CHENG HAN FANG IP AGENCY CO., LTD. (CN)

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