{"id":6415,"date":"2026-09-04T14:03:29","date_gmt":"2026-09-04T19:03:29","guid":{"rendered":"https:\/\/cqfa.quebec\/?p=6415"},"modified":"2026-09-04T14:05:31","modified_gmt":"2026-09-04T19:05:31","slug":"influence-of-feedstock-characteristics-and-printing-parameters-on-material-extrusion-additive-manufacturing-of-aluminum-based-powder-binder-mixtures","status":"publish","type":"post","link":"https:\/\/cqfa.quebec\/en\/influence-of-feedstock-characteristics-and-printing-parameters-on-material-extrusion-additive-manufacturing-of-aluminum-based-powder-binder-mixtures\/","title":{"rendered":"Influence of feedstock characteristics and printing parameters on material extrusion additive manufacturing of aluminum-based powder-binder mixtures"},"content":{"rendered":"<p><em>Marcil-St-Onge, G.; Chandoul, A.; Pelletier, A.; Kreitcberg, A.; Demers, V. (2026). Influence of feedstock characteristics and printing parameters on material extrusion additive manufacturing of aluminum-based powder-binder mixtures. Transactions of the Canadian Society for Mechanical Engineering, vol. 50, 2026.<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Aluminum and its alloys are widely used in industrial fields such as aerospace and automotive due to their excellent rigidity-to-weight ratio. However, the oxide layer that forms on the surface of aluminum poses challenges for powder metallurgy processes, particularly during sintering. Material extrusion additive manufacturing, a powder-binder-based process, offers advantages of rapid prototyping and low cost but remains largely unexplored for aluminum systems. This study investigates each step of the material extrusion process for AlSi10Mg powders. Feedstocks formulated with 65\u00a0vol.% of powder, 25\u201327\u00a0vol.% of paraffin wax, 2\u00a0vol.% of stearic acid, and 6\u20138\u00a0vol.% of ethylene\u2013vinyl acetate were printed to produce simple and complex geometries. It was established that the particle size distribution is a critical parameter driving the feedstock behavior and stabilizing its printability. Printed parts underwent thermal wick-debinding at 250\u00a0\u00b0C for 2 h under argon followed by liquid-phase sintering varying from 565 to 575\u00a0\u00b0C for 2 h in a nitrogen atmosphere, using sacrificial magnesium granules as an oxygen getter. The sintered parts reached a relative density up to 98% and exhibited an adequate microstructure. However, further optimization is required to mitigate warping during sintering and improve dimensional stability.<\/p>\n<p>&nbsp;<\/p>\n<p class=\"link-btn-style btn-yellow\"><a href=\"https:\/\/cdnsciencepub.com\/doi\/full\/10.1139\/tcsme-2025-0245\" target=\"_blank\" rel=\"noopener\">Read the publication<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Marcil-St-Onge, G.; Chandoul, A.; Pelletier, A.; Kreitcberg, A.; Demers, V. (2026). Influence of feedstock characteristics and printing parameters on material extrusion additive manufacturing of aluminum-based powder-binder mixtures. Transactions of the [&hellip;]<\/p>\n","protected":false},"author":80,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-6415","post","type-post","status-publish","format-standard","hentry","category-publications-academiques-quebecoises"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Influence of feedstock characteristics and printing parameters on material extrusion additive manufacturing of aluminum-based powder-binder mixtures - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cqfa.quebec\/en\/influence-of-feedstock-characteristics-and-printing-parameters-on-material-extrusion-additive-manufacturing-of-aluminum-based-powder-binder-mixtures\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Influence of feedstock characteristics and printing parameters on material extrusion additive manufacturing of aluminum-based powder-binder mixtures - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\" \/>\n<meta property=\"og:description\" content=\"Marcil-St-Onge, G.; Chandoul, A.; Pelletier, A.; Kreitcberg, A.; Demers, V. 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