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首页> 外文期刊>Applied Surface Science >Improvement in the properties of plasma-sprayed metallic, alloy and ceramic coatings using dry-ice blasting
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Improvement in the properties of plasma-sprayed metallic, alloy and ceramic coatings using dry-ice blasting

机译：使用干冰喷砂改善等离子喷涂的金属，合金和陶瓷涂层的性能

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Dry-ice blasting, as an environmental-friendly method, was introduced into atmospheric plasma spraying for improving properties of metallic, alloy and ceramic coatings. The deposited coatings were then compared with coatings plasma-sprayed using conventional air cooling in terms of microstructure, temperature, oxidation, porosity, residual stress and adhesion. It was found that a denser steel or CoNiCrAlY alloy coating with a lower content of oxide can be achieved with the application of dry-ice blasting during the plasma spraying. In addition, the adhesive strength of AI2O3 coating deposited with dry-ice blasting exceeded 60MPa, which was nearly increased by 30% compared with that of the coating deposited with conventional air cooling. The improvement in properties of plasma-sprayed metallic, alloy and ceramic coatings caused by dry-ice blasting was attributed to the decrease of annulus-ringed disk like splats, the better cooling efficiency of dry-ice pellets and even the mechanical effect of dry-ice impact.
机译：干冰喷射作为一种环境友好的方法被引入大气等离子喷涂中，以改善金属，合金和陶瓷涂层的性能。然后将沉积的涂层与使用常规空气冷却等离子喷涂的涂层的微观结构，温度，氧化，孔隙率，残余应力和附着力进行比较。已经发现，通过在等离子喷涂期间应用干冰喷射，可以实现具有较低氧化物含量的致密钢或CoNiCrAlY合金涂层。此外，干冰喷射沉积的AI2O3涂层的粘合强度超过60MPa，与传统风冷沉积的涂层相比，粘合强度几乎提高了30％。干冰喷砂引起的等离子喷涂金属，合金和陶瓷涂层性能的改善归因于环状环盘（如splats）的减少，干冰粒料的冷却效率更高，甚至干冰的机械作用。冰的影响。

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