Efficient Production of Novel Fe-based Coatings for Large-area Applications by Means of AC-HVAF Spraying

通过 AC-HVAF 喷涂高效生产大面积应用的新型铁基涂层

• 批准号: 284041570
• 负责人: Professorin Dr.-Ing. Kirsten Bobzin
• 金额: --
• 依托单位: Institut für Oberflächentechnik (IOT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/284041570?language=en
• 关键词: Efficient; Production; Novel; Fe; based

The recently developed AC-HVAF spray process provides higher particle velocities and lower particle temperatures compared to conventional HVOF spraying due to very high flow rates of compressed air. This process is suitable for spraying finer spray powders. This process is advantageous in terms of efficient production of large-area coatings because of its high spray rates. AC-HVAF spraying of novel Fe-based feedstock materials for large-area applications is not documented in literature. The purpose of this proposal is the fundamental investigation of AC-HVAF spraying of novel Fe-based feedstock materials for efficient production of wear and corrosion protective coatings in terms of large-area applications such as cylinder dryers of paper machines. The special process characteristics of the AC-HVAF will be combined with the high wear and corrosion resistance of novel Fe-based materials to achieve economic and ecologic advantages compared to established arc-sprayed Fe-based coatings as used in paper machines today. These advantages are attributed to reduced coating thickness, shorter spray time, less consumption of feedstock materials, reduced finishing work and improved thermal conductive behavior. A suitable process must be developed in order to achieve this purpose. Therefore, particle velocities and temperatures depending on process parameters and powder fractions will be investigated in the process development. Their influences on coating formation, oxidation of feedstock materials and coating microstructure will be studied. The expected advantages will be demonstrated by determination of mechanical and thermos-physical properties of the coatings and their wear and corrosion behavior in comparison with established arc-sprayed coating.

与传统的HVOF喷涂相比，最近开发的AC-HVAF喷雾过程可提供更高的颗粒速度和较低的颗粒温度，这是由于压缩空气的流量很高。此过程适合喷洒更精细的喷雾粉末。由于其高喷雾速率，此过程在有效生产大面积涂料方面是有利的。文献中未记录为大区域应用的新型Fe基原料材料的AC-HVAF喷涂。该提案的目的是对新型Fe基原料材料的AC-HVAF喷涂的基本研究，以有效地生产磨损和腐蚀保护涂料，以大面积应用（例如纸机的圆柱体干燥机）。与当今纸机中既定的ARC基于FE的Fe基涂料相比，AC-HVAF的特殊过程特征将与新型FE基材料的高磨损和耐腐蚀性相结合，以实现经济和生态优势。这些优点归因于涂料厚度减小，喷雾时间较短，原料材料的消耗较小，精加工工作减少以及改善的热导电行为。为了实现此目的，必须开发合适的过程。因此，在过程开发中将研究粒子速度和温度，具体取决于过程参数和粉末分数。将研究它们对涂料形成，原料材料的氧化和涂料微结构的影响。与已建立的弧涂的涂层相比，将通过确定涂料的机械和热物质特性及其磨损和腐蚀行为来证明预期的优势。

项目成果

Influence of Powder Size on the Corrosion and Wear Behavior of HVAF-Sprayed Fe-Based Coatings

• DOI: 10.1007/s11666-018-0819-7
• 发表时间: 2018
• 期刊: Journal of Thermal Spray Technology
• 影响因子: 3.1
• 作者: K. Bobzin;M. Öte;M. Knoch;J. Sommer

Novel Fe-based and HVAF-sprayed coating systems for large area applications

适用于大面积应用的新型铁基和 HVAF 喷涂系统

• DOI: 10.1088/1757-899x/480/1/012005
• 发表时间: 2019
• 期刊: IOP Conference Series: Materials Science and Engineering
• 作者: K. Bobzin;M. Öte;M. A. Knoch;J. Sommer
• 通讯作者: J. Sommer

Impact resistance of WC-Co reinforced HVAF-sprayed FeCrB-coatings

• DOI: 10.1088/1757-899x/1147/1/012028
• 发表时间: 2021-01-01
• 期刊: 22ND CHEMNITZ SEMINAR ON MATERIALS ENGINEERING - 22. WERKSTOFFTECHNISCHES KOLLOQUIUM (WTK 2021)
• 作者: Bobzin, K.;Wietheger, W.;Schulz, M.
• 通讯作者: Schulz, M.

Influence of powder feed rate on corrosion and wear properties of Fe-based HVAF coatings

送粉速度对铁基HVAF涂层腐蚀磨损性能的影响

• DOI: 10.1088/1757-899x/373/1/012012
• 发表时间: 2018
• 期刊: IOP Conference Series: Materials Science and Engineering
• 作者: K. Bobzin;M. Öte;M. A. Knoch;J. Sommer
• 通讯作者: J. Sommer