Influence of Deposition Conditions and Heat Treatment on Tensile Strength of Cold Spray Aluminium Coatings on Al2O3 and AlN Substrates
Influence of Deposition Conditions and Heat Treatment on Tensile Strength of Cold Spray Aluminium Coatings on Al2O3 and AlN Substrates
复制标题
沉积条件和热处理对Al2O3和AlN基体冷喷铝涂层拉伸强度的影响
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
B. Wielage
中科院分区：
文献类型：
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作者：
S. Kuemmel;T. Grund;P. Loeschner;B. Wielage
冷气体喷涂 (CGS) 是一种在陶瓷材料上生产致密且附着力良好的铝涂层的新颖工艺。导致冷喷涂涂层在陶瓷基材上粘合的机械、物理和化学过程仅被粗略地描述。对有关冷喷涂涂层粘合机制的文献进行了调查，其中讨论了对粘合强度的影响并确定了参数。以通过冷气喷涂纯铝涂覆 Al2O3 和 AlN 基材为例，介绍了工艺和基材参数的变化。在升高的基材温度下以及随后的退火之后，可以看到拉伸涂层强度显着提高。拉伸强度还取决于基材的化学成分和粗糙度。结果允许讨论陶瓷基板上冷喷涂铝的结合机制作为沉积和退火参数的函数。
A novel process to produce dense, well adherent aluminium coatings on ceramic materials is cold gas spraying (CGS). The mechanical, physical and chemical processes leading to the bonding of cold-sprayed coatings on ceramic substrates have only been described rudimentarily. A survey of the literature on adhesion mechanisms of cold spray coatings is given, where influences on bond strength are discussed and parameters identified. Using the example of coating Al2O3 and AlN substrates with pure aluminium via cold gas spraying, a process and substrate parameter variation is presented. A significant raise in tensile coating strength was seen at elevated substrate temperatures and after subsequent annealing. Tensile strength also depended on chemical composition and roughness of the substrate. The results allow the discussion of the bonding mechanisms of cold spray aluminium on ceramic substrates as a function of deposition and annealing parameters.