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Title:
METHOD FOR PREPARING CITRIC ACID CATALYZED RARE EARTH-SILANE COMPOSITE CONVERSION FILM
Document Type and Number:
WIPO Patent Application WO/2021/097664
Kind Code:
A1
Abstract:
Disclosed is a method for preparing a citric acid catalyzed rare earth-silane composite conversion film, comprising: step 1: preparation of silane sol; step 2: preparation of a rare earth salt solution; step 3: magnesium-lithium alloy surface treatment; and step 4: preparation of a rare earth-silane composite conversion film. The present invention has simple operation, and a uniform and dense cerium conversion film is formed on the surface of a magnesium-lithium alloy, thereby improving the corrosion resistance of the magnesium-lithium alloy.

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Inventors:
LI YUGUANG (CN)
Application Number:
PCT/CN2019/119431
Publication Date:
May 27, 2021
Filing Date:
November 19, 2019
Export Citation:
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Assignee:
NANJING ADVANCED BIOLOGICAL MAT & PROCESS EQUIPMENT INSTITUTE CO LTD (CN)
International Classes:
C23C22/57
Domestic Patent References:
WO2019157612A12019-08-22
Foreign References:
CN105483684A2016-04-13
JP2003213446A2003-07-30
CN1549873A2004-11-24
CN102409325A2012-04-11
Attorney, Agent or Firm:
BEIJING TINGLI PATENT AGENCY (ORDINARY PARTNERSHIP) (CN)
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