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

基本信息

项目摘要

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.
最近开发的AC-HVAF喷涂工艺与传统的HVOF喷涂相比,由于压缩空气的流速非常高,因此可提供更高的颗粒速度和更低的颗粒温度。该工艺适用于喷涂较细的喷涂粉末。由于其高喷涂速率,该方法在大面积涂层的有效生产方面是有利的。文献中没有记载用于大面积应用的新型铁基原料材料的AC-HVAF喷涂。该提案的目的是对新型铁基原料的AC-HVAF喷涂进行基础研究,以有效生产大面积应用(如造纸机的滚筒干燥器)中的耐磨和防腐蚀涂层。AC-HVAF的特殊工艺特性将与新型铁基材料的高耐磨性和耐腐蚀性相结合,与目前造纸机中使用的电弧喷涂铁基涂层相比,实现经济和生态优势。这些优点归因于减少涂层厚度、缩短喷涂时间、减少原料消耗、减少修整工作和改善导热行为。为了达到这一目的,必须制定一个适当的程序。因此,将在工艺开发中研究取决于工艺参数和粉末分数的颗粒速度和温度。研究了它们对涂层形成、原料氧化和涂层组织的影响。通过测定涂层的机械和热物理性能以及与已建立的电弧喷涂涂层相比的磨损和腐蚀行为,将证明预期的优点。

项目成果

期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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:
  • 影响因子:
    3.1
  • 作者:
    K. Bobzin;M. Öte;M. Knoch;J. Sommer
  • 通讯作者:
    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
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
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Professorin Dr.-Ing. Kirsten Bobzin其他文献

Professorin Dr.-Ing. Kirsten Bobzin的其他文献

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{{ truncateString('Professorin Dr.-Ing. Kirsten Bobzin', 18)}}的其他基金

Simulation Supported Process Development for the Deposition of MCrAlY Coatings by Means of the AC-HVAF Process
仿真支持通过 AC-HVAF 工艺沉积 MCrAlY 涂层的工艺开发
  • 批准号:
    437084607
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Fundamental research on deposition of amorphous coatings on surfaces of inner geometries and evaluation of phase stability under tribological loading
内部几何形状表面非晶涂层沉积的基础研究和摩擦载荷下相稳定性的评估
  • 批准号:
    419126987
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Development of novel creep resistant bond coats for “Environmental Barrier Coatings”
开发用于“环境屏障涂层”的新型抗蠕变粘合涂层
  • 批准号:
    428973451
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Increasing the energy efficiency of plasma spraying by means of simulation-based process development
通过基于模拟的工艺开发提高等离子喷涂的能源效率
  • 批准号:
    442323795
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Development of novel metallic feedstock materials for heating elements produced by thermal spraying
热喷涂加热元件用新型金属原料的开发
  • 批准号:
    437095503
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Investigations on temperature-activated coatings for friction reduction during turning of titanium alloys
钛合金车削过程中减少摩擦的温度激活涂层的研究
  • 批准号:
    422345568
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Experimental and simulative investigations on the fatigue behavior of compounds, consisted of Cr-based nitride hard coatings on steel substrate under cyclic impact loads and bending stresses“ (Fatigue)
对由钢基体上的铬基氮化物硬质涂层组成的化合物在循环冲击载荷和弯曲应力下的疲劳行为进行实验和模拟研究(疲劳)
  • 批准号:
    422784687
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Thermo-Elastohydrodynamics of Coated Polymer Gears
涂层聚合物齿轮的热弹流体动力学
  • 批准号:
    391059617
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Influencing the arc behavior in cascaded single-arc DC plasma generator (DC-EKEAPG) to improve process stability and coating properties
影响级联单弧直流等离子发生器 (DC-EKEAPG) 中的电弧行为,以提高工艺稳定性和涂层性能
  • 批准号:
    336061514
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Development of a method for in-situ determination of deposition efficiency in thermal spraying
热喷涂沉积效率原位测定方法的开发
  • 批准号:
    352196289
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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