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Exploring the Interplay Between Composition and Milling Duration on the Microstructure and Mechanical Properties of XNiCrAlY + Y(NiCr- CrC) Composite Coatings |
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PP: 83-95 |
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doi:10.18576/ijtfst/150107
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Author(s) |
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Andrieanto Nurrochman,
Endro Junianto,
Akhmad A. Korda,
Djoko H. Prajitno,
Budi Prawara,
Eddy A. Basuki,
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Abstract |
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| This study explores the development of XNiCrAlY + Y(NiCr-CrC) HVOF-deposited composite coatings. The feedstock powders were formulated with varying weight ratios of NiCrAlY and Ni-CrC and subjected to mechanical milling between 2 and 36 hours to refine the particle size. Findings demonstrated that moderate milling times enhanced the hardness and wear resistance of the coatings. However, extended milling beyond 12 hours led to in-flight oxidation, which can impair the effectiveness of the milled powders deposition. This oxidation also compromises the inter-splat bonding, resulting in a more porous and less cohesive coating structure. Furthermore, the interplay between the NiCrAlY/NiCr-CrC composition ratios and milling duration significantly influences coating characteristics, emphasizing the necessity of precisely tailoring these parameters for optimum performance. It points to the potential of NiCrAlY + (NiCr-CrC) coatings to enhance the durability and sustainability of materials. |
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