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形成涂层以修复或增强它们。最近，冷喷涂已被引入增材制造领域，用于制造和/或修复独立式部件。现状是在沉积之后需要进行机械加工以获得所需的形状和纹理。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）。材料最初将根据成本和易于沉积的程度进行选择，例如铜，但随后将转向功能更强的材料，例如钛合金。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综述和实验相结合来确定最有前途的探索领域。随后的几年将着眼于发展过程和它的理解，沿着与任何必要的机械，以潜在地消除对后处理加工的需要。有关冷喷涂在增材制造中的现状的更多信息，请参阅：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.