Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

摘要：

Coating build-up mechanisms and properties of cold sprayed aluminum-alumina cermets were investigated. Two spherical aluminum powders having average diameters of 36 and 81 microns were compared. Those powders were blended with alumina at several concentrations. Coatings were produced using a commercial low pressure cold spray system. Powders and coatings were characterized by electronic microscopy and microhardness measurements. In-flight particle velocities were monitored for all powders. The deposition efficiency was measured for all experimental conditions. Coating performance and properties were investigated by performing bond strength test, abrasion test and corrosion tests, namely, salt spray and alternated immersion in salt water tests. These coating properties were correlated to the alumina fraction either in the starting powder or in the coating.

作者: E. Irissou J.-G. Legoux B. Arsenault C. Moreau

作者单位: National Research Council Canada – Industrial Materials Institute, Boucherville, QC, Canada

会议类型: 国际会议

会议名称: 2007国际热喷涂大会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-05-14（万方平台首次上网日期，不代表论文的发表时间）