Title:
PREPARATION METHOD FOR WEAR-RESISTANT COATING ON CYLINDRICAL INNER WALL SURFACE OF ALUMINUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2021/012627
Kind Code:
A1
Abstract:
A preparation method for a wear-resistant coating on a cylindrical inner wall surface of an aluminum alloy. The preparation method comprises the following steps: firstly preparing graphene powder, Al powder and the like to obtain a mixed powder; uniformly mixing and heating the mixed powder and a polyvinyl alcohol liquid, and then carrying out spray granulation to obtain a low-temperature self-propagating composite material; stirring and mixing the low-temperature self-propagating composite material and water glass to obtain a slurry; injecting the slurry into a cylindrical inner cavity of an aluminum alloy workpiece, mounting the aluminum alloy workpiece on a horizontal rotary table to rotate, and heating the aluminum alloy workpiece during the rotation process, such that the slurry is uniformly solidified on the inner wall surface of the cylindrical inner cavity; and after the slurry is uniformly solidified, continuing to rotate same while fusing the solidified slurry using an oxygen acetylene flame, such that the solidified slurry reacts to generate a coating. According to the preparation method, the reaction process is relatively low in temperature, and the compactness and the bonding strength of the coating are improved.
Inventors:
TIAN HAOLIANG (CN)
YU YANG (CN)
WANG CHANGLIANG (CN)
GUO MENGQIU (CN)
ZHOU ZIMIN (CN)
TANG ZHIHUI (CN)
ZHANG ANG (CN)
CUI YONGJING (CN)
WANG TIANYING (CN)
GAO JUNGUO (CN)
YU YANG (CN)
WANG CHANGLIANG (CN)
GUO MENGQIU (CN)
ZHOU ZIMIN (CN)
TANG ZHIHUI (CN)
ZHANG ANG (CN)
CUI YONGJING (CN)
WANG TIANYING (CN)
GAO JUNGUO (CN)
Application Number:
PCT/CN2020/000140
Publication Date:
January 28, 2021
Filing Date:
June 17, 2020
Export Citation:
Assignee:
AECC BEIJING INST AERONAUTICAL MAT (CN)
International Classes:
C22C29/12; B22F1/052; B22F1/10; B22F1/102; C23C24/10
Foreign References:
| CN104556726A | 2015-04-29 | |||
| CN104498938A | 2015-04-08 | |||
| CN107319948A | 2017-11-07 | |||
| CN104313446A | 2015-01-28 | |||
| CN106191613A | 2016-12-07 | |||
| US20040219344A1 | 2004-11-04 | |||
| US20120161098A1 | 2012-06-28 | |||
| CN110284039A | 2019-09-27 |
Attorney, Agent or Firm:
AVIC PATENT OFFICE (CN)
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