Nanometer aluminum composite bearing bush coating slurry formula design and high-density coating preparation method

The invention discloses a nano-aluminum composite bearing bush coating slurry formula design and a high-density coating preparation method. The coating steady-state slurry formula comprises the following components: polyamide-imide, nano-aluminum powder, N-methyl pyrrolidone, sodium pyrophosphate and a silane coupling agent. The spraying process disclosed by the invention comprises the steps of green body pretreatment, bearing bush spraying, slurry curing, inspection and sub-packaging. The formula slurry disclosed by the invention has excellent dispersion stability and rheological property, and is combined with a spraying process to prepare a metal organic composite coating which is high in density, good in uniformity and good in combination with a matrix. 本发明公开一种纳米铝复合轴瓦涂层浆料配方设计及高致密涂层制备方法，所述的涂层稳态浆料配方由以下成分组成：聚酰胺酰亚胺，纳米铝粉，N-甲基吡咯烷酮，焦磷酸钠，硅烷偶联剂。本发明公开的喷涂工艺包括坯体预处理、轴瓦喷涂、浆料固化及检验分装步骤。本发明配方浆料具有优异的分散稳定性和流变性能，与喷涂工艺相结合，制备出致密度高、均匀性好、与基体结合良好的金属有机复合涂层。