Investigation of the Deposition and Densification Parameters on the Mechanical Properties of Pressurized Spray Deposited (PSD) 3-D Printed Ceramic Components

Menchhofer, Paul A.¹  Becker, Benjamin² 

[1] Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division;HotEnd Works, LLC, Oberlin, OH (United States)

关键词: Spray deposition;    Ceramic composites;   

DOI  :  10.2172/1311268
RP-ID  :  ORNL/TM--2016/385
PID  :  OSTI ID: 1311268
Others  :  Other: ED2802000
Others  :  CEED492

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Oak Ridge National Laboratory (ORNL) and HotEnd Works teamed to investigate the use of pressurized spray deposition (PSD) technology for the production of ceramic parts via additive manufacturing. Scanning electron microscopy of sintered parts provided by HotEnd Works revealed voids large enough to compromise the mechanical properties of PSD manufactured parts. Scanning electron microscopy and particle size analysis of the alumina oxide powder feedstocks indicated that the powders contained some large particles and some agglomerations in the powder. Further classification of the powder feedstocks and removal of the agglomerates by sonication in the liquid used for the PSD process are recommended. Analysis of sintered parts indicated that the sonic modulus for the alumina part is consistent with other known values for alumina. The density for this part was determined by standard Archimedes immersion density methods and was found to be > 99.7 % of the theoretical density for pure alumina.