Method for controlling porosity of porous anti-attrition coating

• Main Authors: ZHANG ANG, DU XIUXIN, WANG CHANGLIANG, GUO MENGQIU
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2022
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention provides a method for controlling the porosity of a porous anti-attrition coating, which comprises the following steps: by taking aluminum bronze-organic matter mixed powder with set components as a spraying raw material, spraying on the surface of a matrix by adopting an atmospheric plasma spraying method, and adjusting the speed and temperature of powder particles in flame to a certain range by changing spraying parameters, so as to control the porosity of the porous anti-attrition coating. Meanwhile, the temperature of the base plate is controlled, and the porosity of the porous anti-attrition coating is controlled; the aluminum bronze-organic matter mixture powder comprises aluminum bronze alloy particles and polyester particles in a mass ratio of (95-90): (5-10); the speed of the powder particles is 170-185 m/s, and the temperature of the powder particles is 1970-2050 DEG C; the temperature of the substrate is 100 to 130 DEG C. According to the method, the speed and the temperature of powde