The Application of Laser Assisted Cold Spray for Additive Manufacturing

冷喷涂是一种金属粉末沉积技术，传统上用于在基材上创建涂层以修复或增强它们。最近，冷喷涂技术被引入到增材制造领域，用于制造和/或修复独立部件。目前的现状是，沉积后需要进行加工，以获得所需的形状和织构。该项目将研究冷喷涂和激光辅助冷喷涂在增材制造中的应用。这可能包括零件的建造，喷涂到模具和维修工作（或任何组合）。材料的选择将首先考虑成本和易沉积性，如铜，但随后将转向功能更强的材料，如钛合金。目标应用领域将从航空航天到医疗。第一年的研究将通过文献回顾和实验相结合的方法来确定最有前途的探索区域。随后的几年将着眼于发展工艺及其理解，以及潜在地消除后处理加工需要的任何必要的机械。更多关于增材制造中冷喷涂现状的信息，请参考：Yin S， Cavaliere P, Aldwell B, Jenkins R, Liao H， Li W等。冷喷涂增材制造与修复：基础与应用。添加剂制造。2018年5月；21:628-50。

Cold spray is a metallic powder deposition technique which has been traditionally used to create coatings on substrates to repair or enhance them. Recently cold spray has been introduced to the additive manufacturing sector, being used to fabricate and/or repair free standing components. The status quo is that machining is required after the deposition to obtain the desired form and texture. This project will look at the application of cold spray and laser assisted cold spray for additive manufacturing. This may encompass building of parts, spraying into moulds and repair work (or any combination). Materials will initially be selected for cost and ease of deposition, e.g. copper, but will then move onto more functional materials e.g. titanium alloys. Target application spaces will range from aerospace to medical.The first year of study will look to identify the most promising regions for exploration by a combination of literature review and experimentation. Subsequent years will look at developing the process and its understanding, along with any machinery necessary to potentially eliminate the need for post process machining. For more information on the status quo of cold spray in additive manufacturing please refer to: Yin S, Cavaliere P, Aldwell B, Jenkins R, Liao H, Li W, et al. Cold spray additive manufacturing and repair: Fundamentals and applications. Addit Manuf. 2018 May;21:628-50.