Scholarlink

<p>Cr<sub>3</sub>C<sub>2</sub>-NiCr coatings are widely used to protect industrial components in harsh environments due to their exceptional wear resistance, high-temperature oxidation protection, and corrosion resistance. Such coatings are typically produced using the high-velocity oxygen fuel (HVOF) spraying process. However, internal coating applications pose challenges such as restricted surface access, limited experience with optimized process parameters and the difficulty of producing fine chromium carbides, which results in coarser particles compared to powders like WC-CoCr. This study investigates the application of a commercially available Cr<sub>3</sub>C<sub>2</sub>-NiCr powder using the ID-HVOF coating process. A Central Composite Design (CCD) within a Design of Experiments (DoE) framework was employed to analyze the effects of key process parameters—kerosene, hydrogen, oxygen, and the powder feed rate—on the coating performance. The results confirm that the validation test successfully produced a coating that matches the predicted parameters from the CCD. This study underscores the importance of statistical design in optimizing the ID-HVOF process, enabling improved mechanical properties and reliable coating quality for the internal surface protection using Cr<sub>3</sub>C<sub>2</sub>-NiCr powders.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimization of Cr3C2-NiCr Coatings using ID-HVOF: A Statistical Approach to Key Process Parameters

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月31日

查看全文
  • Mark Dennis Kensy,
  • Ingor Baumann,
  • Jonas Zajaczkowski,
  • Leif Hagen,
  • Wolfgang Tillmann

摘要

Cr3C2-NiCr coatings are widely used to protect industrial components in harsh environments due to their exceptional wear resistance, high-temperature oxidation protection, and corrosion resistance. Such coatings are typically produced using the high-velocity oxygen fuel (HVOF) spraying process. However, internal coating applications pose challenges such as restricted surface access, limited experience with optimized process parameters and the difficulty of producing fine chromium carbides, which results in coarser particles compared to powders like WC-CoCr. This study investigates the application of a commercially available Cr3C2-NiCr powder using the ID-HVOF coating process. A Central Composite Design (CCD) within a Design of Experiments (DoE) framework was employed to analyze the effects of key process parameters—kerosene, hydrogen, oxygen, and the powder feed rate—on the coating performance. The results confirm that the validation test successfully produced a coating that matches the predicted parameters from the CCD. This study underscores the importance of statistical design in optimizing the ID-HVOF process, enabling improved mechanical properties and reliable coating quality for the internal surface protection using Cr3C2-NiCr powders.