【作者】 曹宁； 李木森； 隋金玲； 陈华英； 薛成骞；

【Author】 CAO Ning LI Musen CHEN Huaying XUE Chengqian School of Materials Science and Engineering,Shandong University,Jinan 250061,China

【机构】 山东大学 材料科学与工程学院； 北京石油化工学院；

【摘要】 喷砂预处理作为一种能够显著提高各类等离子体喷涂层与碳／碳复合材料基体界面结合强度的技术手段已得到广泛应用。本文以具有不同粒度的碳化硅砂为介质,采用四种不同的工艺对碳／碳复合材料进行表面喷砂预处理。通过对比观察材料表面显微形貌发现,采用5～11μm 粒度的碳化硅砂和0．2MPa 载气压力工艺进行喷砂预处理,可以在不破坏碳／碳复合材料表面结构完整性的前提下,获得适于等离子体喷涂的、较为理想的表面结构。更多还原

【Abstract】 Sand blasting pretreatment is widely used as an important method to increase the bond strength of the plasma sprayed coatings and carbon/carbon composites obviously.In this paper,the SiC sands with different granularity were blasted onto the carbon/carbon composites through four technics. By the means of scanning electronic microscope and stereology optical microscope,the surface of sand blasted carbon/carbon composites were observed respectively.The results revealed that when the SiC sands with the 5～11μm granularity were blasted onto the carbon/carbon composites under the air pressure 0.2MPa,the surface of the materials could keep the structure integrality and obtain the ideal microstructure for plasma spraying.更多还原