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<p>Researchers have been continuously formulating, designing and optimizing HVOF coating materials to obtain porous free and highly dense coating material with better mechanical properties and good erosion resistance. This study examines the impact of molybdenum addition as an alloying element on the erosive and mechanical characteristics of coating materials based on iron alloys. Using HVOF, Fe alloy coatings with different molybdenum contents were applied to 316&#xa0;L steel substrates. The micro-hardness, adhesion strength, surface roughness, porosity, and erosion wear rate of coatings with varying molybdenum contents were compared. The results showed that the micro-hardness, adhesion, and wear resistance were enhanced with an increase in molybdenum content. It also reduced the porosity and surface roughness. A minimal erosion rate was best obtained using a combination of factors with 20% weight% of molybdenum, an impact velocity of 40&#xa0;m/sec, an impingement angle of 30°. Moreover, molybdenum was found to be the most significant factor compared to wear parameters like impact velocity and angle of impingement.</p>

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Role of molybdenum on mechanical and erosion wear analysis of iron alloy coating deposited via HVOF coating

  • 期刊论文

  • 发表日期：

    2025年7月14日

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  • Ratnesh Kumar Sharma,
  • Randip Kumar Das,
  • Shiv Ranjan Kumar

摘要

Researchers have been continuously formulating, designing and optimizing HVOF coating materials to obtain porous free and highly dense coating material with better mechanical properties and good erosion resistance. This study examines the impact of molybdenum addition as an alloying element on the erosive and mechanical characteristics of coating materials based on iron alloys. Using HVOF, Fe alloy coatings with different molybdenum contents were applied to 316 L steel substrates. The micro-hardness, adhesion strength, surface roughness, porosity, and erosion wear rate of coatings with varying molybdenum contents were compared. The results showed that the micro-hardness, adhesion, and wear resistance were enhanced with an increase in molybdenum content. It also reduced the porosity and surface roughness. A minimal erosion rate was best obtained using a combination of factors with 20% weight% of molybdenum, an impact velocity of 40 m/sec, an impingement angle of 30°. Moreover, molybdenum was found to be the most significant factor compared to wear parameters like impact velocity and angle of impingement.