Restoration of aluminum alloy valve bodies by thermal spray deposition

更换形状复杂、壁薄的零件成本可能很高。在某些情况下，可以通过使用热喷涂工艺在磨损区域沉积适当的涂层来翻新零件，从而在不影响零件功能和原始几何形状的情况下恢复尺寸。通常，由于涂层微观结构的特殊性，通过热喷涂修复的表面可提供更好的使用性能。我们将调查涂层技术的发展，以修复Aeropol航空服务公司库存中的一些常见部件。特别是要为铝合金阀体选择合适的涂层材料和沉积方法，并对修复后的零件进行性能测试。

Replacement of parts with complex shape and thin walls can be costly. In some cases the parts can be refurbished by using thermal spray coating processes to deposit a proper coating on the worn areas to restore dimensions without affecting the functionality and original geometry of the part. Often the surface restored by thermal spray offers better performance in service due to the specifics of the coating microstructure. We will investigate the development of coating techniques for restoration of a number of common parts from the Aeropol Aviation Services Corporation inventory. In particular we are going to select a proper coating material and deposition method for a valve body made out of aluminum alloy, and test the performance of the restored parts.