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General description of cold sprayed coatings formation and of their properties

机译:冷喷涂涂层形成的一般描述及其性质

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This paper intends to describe the formation of cold sprayed coatings and their properties based on latest works.Thermodynamic aspects of the cold spray process are discussed,including the main factors influencing powder particles velocity,e.g.nozzle construction,gas type,powder morphology as well as its significance for coating quality.The phenomenon of coating building is illustrated using both numerical simulation and microstructure analysis.Particular emphasis is placed on the description of critical and erosion velocities.Microstructure and coating properties have also been discussed,i.e.porosity,electrical conductivity and residual stresses based on own research.These are further supplemented by a literature review.Finally,clear division between the low and high pressure cold spray method is made.
机译:本文在最新研究成果的基础上,介绍了冷喷涂涂层的形成及其性能。讨论了冷喷涂过程的热力学方面,包括影响粉末颗粒速度的主要因素,如喷嘴结构、气体类型、粉末形态及其对涂层质量的意义。通过数值模拟和微观结构分析说明了涂层生成的现象。特别强调了临界速度和侵蚀速度的描述。根据自己的研究,还讨论了微观结构和涂层性能,即孔隙率、电导率和残余应力。这些都是进一步补充的文献综述。最后,对低压和高压冷喷涂方法进行了明确划分。

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