目的 研究等离子喷涂-物理气相沉积（PS-PVD）制备热障涂层过程中影响气膜冷却孔堵塞情况的因素。方法 采用等离子喷涂-物理气相沉积技术，以团聚烧结的ZrO2-7%Y2O3（7YSZ）为原料，在预制有气膜冷却孔的高温合金板基体上制备热障涂层，研究了气膜冷却孔的孔角度、孔径大小等参数在热障涂层制备过程中对气膜孔堵塞情况的影响。结果 当气膜冷却孔的孔径控制为0.85 mm时，30°、60°、90°气膜冷却孔的孔径收缩率分别为19.01%、14.50%、14.86%，孔径收缩率随角度的增大而减小，一定程度后保持稳定。孔内部涂层结构与表面涂层结构一致，都为柱状结构涂层。当气膜冷却孔的角度控制为30°时，孔径为1.0、1.3、15 mm的气膜冷却孔的孔径收缩率分别为36.40%、31.70%、24.45%，孔径收缩率随孔径的增大而减小。涂层在孔内的分布深度随孔径大小的增大而增大。结论 气膜冷却孔的角度会影响PS-PVD热障涂层的沉积效率，从而影响孔径收缩率。气膜冷却孔的孔径不影响PS-PVD热障涂层的沉积效率，但会影响孔径收缩率。

The work aims to study factors affecting blocking of air film cooling hole during preparation of thermal barrier coating by plasma-spray physical vapor deposition. With agglomerated and sintered ZrO2-7wt%Y2O3(7YSZ) powder as raw material, thermal barrier coatings were prepared by plasma spray-physical vapor deposition (PS-PVD) on superalloy plate substrate with precast air film cooling holes. Effects of parameters including hole angle and pore size of the air film cooling hole on hole blockage were studied. When pore size of the air film cooling hole was controlled within 0.85 mm, shrinkage factor of the pore size was 19.01%, 14.50%, 14.86%, respectively at the angle of 30°, 60°and 90°. Shrinkage factor of the pore size decreased and maintained stable after a while as the angle increased. Both coatings outside and inside the hole were of columnar structure. When the angle of air film cooling hole was 30°, shrinkage factor of the pore size was 36.40%, 31.70% and 24.45%, respectively provided with pore size of 1.0 mm, 1.3 mm and 1.5 mm. The shrinkage factor decreased while distribution depth of the coating in hole increased as the pore size increased. The angle of air film cooling hole will influence deposition efficiency of thermal barrier coatings, and thus affecting shrinkage factor of pore size. Pore size of the air film cooling hole has no effect on deposition efficiency of thermal barrier coatings, but it will affect shrinkage factor of pore size.