Influence of Spray Process Parameters on Microstructure and Properties of Aluminum-Based Boron Nitride Abradable Seal Coating

Thursday, May 10, 2018: 8:20 AM
Tampa 1 (Gaylord Palms Resort )
Mr. TONG LIU , Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts, Beijing, China
Prof. Yueguang Yu , Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts, Beijing, China
Dr. Jianming Liu , Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts, Beijing, China
Mrs. Xuying Cheng , Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts, Beijing, China
Prof. Deming Zhang , Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts, Beijing, China
Prof. Suyuan Yang , Beijing Institute of Technology, BEIJING, China
In this paper, Aluminum-based boron nitride composite which composed of Aluminum powder and boron nitride as raw material, was prepared using mechanical clad. Abradable seal coating was prepared by plasma spraying. The micro-structure, hardness, bonding strength and abradability of coating were researched. The influence of spray parameters (power, powder feeding rate and spray distance) on micro-structure and properties were analysed. The results present that with the increase of the power, the wear phase of coating decreased, the hardness and bonding strength of coating increased, and the wear resistance decreased, and with the increase of powder feeding rate and spraying distance, the hardness and bonding strength of the coating decreased, and the wear resistance increased.
See more of: Mechanical, Tribological, Oxidation & Corrosion Behavior of Aerospace-based Coatings
See more of: Advanced Coatings for the Aerospace Industry (joint symposium with AeroMat)