The effect of rare earth yttrium on properties of Ni-W/ZrO2layers

Pei Feng, Yuhua Shi, Dayong Jiang, Ling Lu, Peng Shang, Bin Li

Research output: Contribution to journalConference articlepeer-review

Abstract

Aluminum alloys often fail to meet harsh environmental conditions, such as abrasion and erosion, due to their inherent limitations in terms of unsatisfied hardness and wear resistance. In this paper, Re/Ni-W-ZrO2 composite layers are fabricated on the surface of an aluminum alloy matrix by electroplation. The cross-sectional morphology, elemental distribution, thickness and surface hardness of the composite coatings are characterized. The impact of the addition of Re-Y(NO3)3 on the characteristics of the coating is further examined. The coating is well bonded to the matrix material while ZrO2 particles are dispersed within the Ni-W base metal layer with a thickness of 136 μm. When Re is added to 1.5 g/L, the thickness and hardness are enhanced significantly. This is because the unique 4f electronic structure of rare earth elements not only plays a role in refining the grain during the coating growth process, but also effectively reduces the overpotential that may be generated during the deposition process, thereby increasing the deposition rate, so as to obtain a denser and finer grain structure.

Original languageEnglish
Article number012023
JournalJournal of Physics: Conference Series
Volume2819
Issue number1
DOIs
StatePublished - 2024
Externally publishedYes
Event2024 10th International Conference on Applied Materials and Manufacturing Technology, ICAMMT 2024 - Hybrid, Guangzhou, China
Duration: 22 May 202423 May 2024

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