Aecc Beijing Institute of Aeronautical Materials

Zimin Zhou

Yang Yu

Changliang Wang

Zhihui Tang

Mengqiu Guo

Yongjing Cui

Haoliang Tian

Junguo Gao

Tianying Wang

Ang Zhang

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.

Preparation method for wear-resistant coating on cylindrical inner wall surface of aluminum alloy

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 SiOand La&#x2014;Ce&#x2014;Zr&#x2014;O using plasma spraying or explosive spraying to form a surface layer.

Method for fabricating thermal barrier coating having self-repair and temperature-sensitive functions

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Beijing, China

Zimin Zhou