火焰热解喷涂Al_2O_3-Y_2O_3陶瓷涂层

Flame Pyrolysis Spraying of AluminaYttria Ceramic Coating

采用火焰热解喷涂方法，以Ａｌ（ＮＯ３）３和Ｙ（ＮＯ３）３为源物质，在敞开的大气环境中，在不锈钢基板上获得了具有一定厚度的Ａｌ２Ｏ３Ｙ２Ｏ３复合氧化物陶瓷涂层。在１２７３Ｋ空气中的恒温氧化结果表明，涂层有效地促进了基体中铬元素的选择氧化，并提高了不锈钢的抗高温氧化性能。

?Aluminayttria composite oxide coating was obtained on the stainless steel through the pyrolysis of aluminium nitrate and yttrium nitrate by flame spraying in the open atmospheric environment. The isothermal oxidation behaviour of the specimens coated with aluminayttria was investigated in air at the temperature of 1273 K. The results show that the coating can promote the selective oxidation of chromium in the alloy and improve the high temperature corrosion resistance of the stainless steel.