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USE OF AQUEOUS SUSPENSIONS IN PLASMA SPRAYING OF ALUMINA COATINGS

机译:水性悬浮液在氧化铝涂层等离子喷涂中的使用

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摘要

The paper examines and compares the properties of Al_2O_3 coatings sprayed using two methods: arc plasma spraying (APS) of micron powders (average particle size is 45 mum) and suspension plasma spraying (SPS) (average particle size is 2.9 mum). A system for feeding suspension into plasma spray is developed and fabricated. It is established that SPS coatings contain finer structural components than APS. This improves their mechanical characteristics such as microhardness and indentation fracture toughness.
机译:本文检查并比较了两种方法喷涂的Al_2O_3涂层的性能:微米粉末的电弧等离子喷涂(APS)(平均粒径为45微米)和悬浮等离子喷涂(SPS)(平均粒径为2.9微米)。开发并制造了一种将悬浮液送入等离子喷雾的系统。可以确定的是,SPS涂层包含比APS更好的结构组分。这改善了它们的机械特性,例如显微硬度和压痕断裂韧性。

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