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首页> 外文期刊>DVS-Berichte >Comparison of coating stresses produced by high velocity liquid/gas fuel and triplex pro 200 plasma processes using in-situ coating stress measurement
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Comparison of coating stresses produced by high velocity liquid/gas fuel and triplex pro 200 plasma processes using in-situ coating stress measurement

机译：使用原位涂层应力测量比较高速液体/气体燃料和Triplex pro 200等离子工艺产生的涂层应力

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摘要

The coating stresses induced by thermal spray using a High Velocity Gas Fuel (HVOF) and Liquid Fuel (HVLF) gun and a High Velocity Plasma (HVP) gun with the high velocity nozzle are compared using a curvature based in-situ coating stress analysis approach that measures the deflection of a beam while a coating is applied to it. This novel diagnostic tool provides new insights into the internal stresses generated in a coating system during the actual application of the coating. Coatings were sprayed with three process guns and the same material feed stock that result in similar coating structures and properties. HVOF, HVLF and HVP processes induce similar particle energy states at high velocity regimes as measured with particle diagnostic tools during spraying but due to the differences in particle history are expected to result in different coating stresses. In some cases the actual measured stress conditions using the in-situ coating stress method were dramatically different. Analysis is presented to explain the reason for these surprising results. The understanding of these differences will lead to an improved methodology for mapping coating processes from one another along with a more in depth understanding of coating stresses buildup.
机译：使用基于曲率的原位涂层应力分析方法，比较了使用高速气体燃料（HVOF）和液体燃料（HVLF）喷枪以及带有高速喷嘴的高速等离子（HVP）喷枪热喷涂引起的涂层应力它测量在施加涂层时光束的挠度。这种新颖的诊断工具可提供对涂料实际应用过程中涂料系统中产生的内部应力的新见解。用三把处理枪和相同的原料进料喷涂涂层，从而得到相似的涂层结构和性能。 HVOF，HVLF和HVP工艺在喷涂过程中使用颗粒诊断工具在高速状态下诱导了相似的颗粒能量状态，但是由于颗粒历史的差异，预计会导致不同的涂层应力。在某些情况下，使用原位涂层应力法测得的实际应力条件有很大不同。进行分析以解释产生这些令人惊讶结果的原因。对这些差异的理解将导致一种改进的方法，用于相互映射涂层工艺，以及对涂层应力累积的更深入的了解。

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