Interdiffusion between 316L Stainless Steel and Copper in Coatings Processed by High Velocity Oxyfuel

What is it about?

The combination of stainless steel and copper materials can lead to superior corrosion and thermal conductivity performance. Nevertheless, joining these dissimilar materials by fusion processes is challenging due to the risk of hot cracks and lack of fusion. In this work, we processed these materials by thermal spray and investigated the adhesion performance by bending tests. It was found that 316L coatings have a much superior adhesion to Cu substrates than Cu coatings had to AISI 316 substrates, associated to the ease of 316L incoming particles to embed in the softer Cu matrix and with the higher susceptibility of 316L coatings to diffuse into Cu substrates.

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