METHOD FOR PREPARING MAGNESIUM-BASED COMPOSITE MATERIAL

WIPO Patent Application WO/2021/035776

A1

A method for preparing a magnesium-based composite material, comprising the following steps: (1) preparing magnesium ingot as a raw material; and preparing a salt flux and a reinforcement; (2) placing the salt flux in a crucible and heating same to prepare a salt flux melt; and adding the reinforcement; (3) pouring the product into a crucible at normal temperature, and cooling same to normal temperature to obtain a precursor; (4) pre-heating an iron crucible to a red heat state, and adding raw materials and melting same at 953 to 1043K; (5) putting the precursor into the raw material melt, stirring, then adding a refining agent under the condition of a temperature of 953 to 993K, stirring and refining same, controlling the temperature, and standing the mixture to form scum and a melt; and (6) removing the scum, lowering the temperature to 973 to 982K and performing casting. The method makes the reinforcement uniformly dispersed in the molten salt, so that the reinforcement is easily uniformly dispersed in a matrix; has a simple process and low costs, and can be used for preparing a magnesium-based composite structural member having a large volume, and the product of which can be automated.

LE QICHI (CN)
ZHAO DAZHI (CN)
LI XIAOQIANG (CN)
REN LIANG (CN)
BAO LEI (CN)
WANG TONG (CN)

PCT/CN2019/104192

March 04, 2021

September 03, 2019

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UNIV NORTHEASTERN (CN)

C22C21/00; C22C1/02; C22C1/06; C22C32/00

WO2015123502A1

2015-08-20

CN106521274A	2017-03-22
CN103725947A	2014-04-16
CN1460727A	2003-12-10
CN102747240A	2012-10-24

SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)

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