Abstract: A method for producing an abrasion-resistant coating on the inner wall of an aluminum alloy workpiece is provide. The steps include mixing a graphene powder and Al powder to obtain a mixed powder; combining and heating the mixed power with a polyvinyl alcohol (PVA) liquid, and performing spray granulation to obtain a low-temperature self-propagating composite; stirring a slurry comprising the low-temperature self-propagating composite and sodium silicate; injecting the slurry into a cylindrical inner cavity of an aluminum alloy workpiece mounted on a horizontal rotary table for rotation, the aluminum alloy workpiece is heated with the rotation at a second temperature of 80-100° C. so that the slurry is uniformly solidified on the cylindrical inner surface of the cylindrical inner cavity; and burning the slurry, after the slurry is uniformly solidified and while the rotation is maintained, with an oxyacetylene flame to form the wear-resistant coating.
Type:
Grant
Filed:
June 17, 2020
Date of Patent:
April 9, 2024
Assignee:
AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS
Abstract: A method for preparing a thermal barrier coating (TBC) material includes: spraying a metal mixture onto a surface of an alloy using supersonic flame spraying or explosive spraying to form a bottom layer; spraying an yttria-stabilized zirconia (YSZ) precursor sol onto the bottom layer using liquid plasma spraying to form an intermediate layer; and spraying a ceramic composite including SiO2 and La—Ce—Zr—O using plasma spraying or explosive spraying to form a surface layer.
Type:
Grant
Filed:
June 17, 2020
Date of Patent:
January 10, 2023
Assignee:
AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS
Abstract: A resin matrix composite used as anti-ablation coating material and its preparation method is provided. The resin matrix composite is a mixture of yttria-stabilized zirconia (YSZ), a resin, Cu, and SiO2. The mixture is uniform and include spherical particles or spherical aggregates. A method for preparing a resin matrix composite for anti-ablation coating includes mixing YSZ, a resin, Cu, and SiO2 to obtain a mixed powder and performing spray granulation of the mixed powder to obtain a resin matrix composite including spherical particles or spherical agglomerates.
Type:
Application
Filed:
June 17, 2020
Publication date:
April 21, 2022
Applicant:
AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS
Inventors:
Haoliang Tian, Jie Pang, Changliang Wang, Mengqiu Guo, Huanhuan Zhang, Junguo Gao, Yang Yu, Zhihui Tang, Yongjing Cui
Abstract: A method for preparing a thermal barrier coating (TBC) material includes: spraying a metal mixture onto a surface of an alloy using supersonic flame spraying or explosive spraying to form a bottom layer; spraying an yttria-stabilized zirconia (YSZ) precursor sol onto the bottom layer using liquid plasma spraying to form an intermediate layer; and spraying a ceramic composite including SiO2 and La—Ce—Zr—O using plasma spraying or explosive spraying to form a surface layer.
Type:
Application
Filed:
June 17, 2020
Publication date:
April 7, 2022
Applicant:
AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS
Abstract: A method for producing an abrasion-resistant coating on the inner wall of an aluminum alloy workpiece is provide. The steps include mixing a graphene powder and Al powder to obtain a mixed powder; combining and heating the mixed power with a polyvinyl alcohol (PVA) liquid, and performing spray granulation to obtain a low-temperature self-propagating composite; stirring a slurry comprising the low-temperature self-propagating composite and sodium silicate; injecting the slurry into a cylindrical inner cavity of an aluminum alloy workpiece mounted on a horizontal rotary table for rotation, the aluminum alloy workpiece is heated with the rotation at a second temperature of 80-100° C. so that the slurry is uniformly solidified on the cylindrical inner surface of the cylindrical inner cavity; and burning the slurry, after the slurry is uniformly solidified and while the rotation is maintained, with an oxyacetylene flame to form the wear-resistant coating.
Type:
Application
Filed:
June 17, 2020
Publication date:
December 16, 2021
Applicant:
AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS