论文部分内容阅读
The High Velocity Arc Spraying (HVAS) technology was used to prepare Fe-Al composite coatings by the adding of dif- ferent elements into cored wires to obtain different Fe-Al coatings. The added compounds do great effect on the properties of the composite coatings. The microstructures and abrasive wear performances of the coatings were assessed by transmission electron mi- croscopy (TEM), scanning electron microscopy (SEM), and THT07-135 high temperature wear equipment. It was found that the ad- ding of Cr3C2 can greatly increase the room temperature wear behavior, and Fe-Al/WC coatings have adapting periods at the begin- ning of wear experiment. With the rise of temperature, the wear resistance of Fe-Al/Cr3C2 coatings becomes bad from room tem- perature to 250°C, and then stable from 250°C to 550°C; the wear resistance of Fe-Al/WC becomes well with the rise of temperature. The adding of Cr and Ni can also improve wear performances of Fe-Al composite coatings.
The High Velocity Arc Spraying (HVAS) technology was used to prepare Fe-Al composite coatings by the addition of dif- ferent elements into cored wires to obtain different Fe-Al coatings. The added compounds do great effect on the properties of the composite coatings . The microstructures and abrasive wear performances of the coatings were assessed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and THT07-135 high temperature wear equipment. It was found that the ad- ding of Cr3C2 can greatly increase the room temperature wear behavior, and Fe-Al / WC coatings have adapting periods at the begin- ning of wear experiment. With the rise of temperature, the wear resistance of Fe-Al / Cr3C2 coatings have bad from room tem- perature to 250 ° C, and then stable from 250 ° C to 550 ° C; the wear resistance of Fe-Al / WC becomes well with the rise of temperature. The addition of Cr and Ni can also improve wear performances of Fe-Al composite coatings .