Incorporation of graphene nano platelets in suspension plasma sprayed alumina coatings for improved tribological properties
نویسندگان
چکیده
• GNP incorporated in alumina matrix to deposit composite coatings via SPS. Raman analysis confirmed retention of as-processed coatings. Improved mechanical and tribological properties achieved for Wear mechanisms monolithic coating were revealed. Graphene possesses high fracture toughness excellent lubrication properties, which can be exploited enhance performance systems utilized combat wear. In this work, suspension plasma spray (SPS) process was employed a composite, graphene nano-platelets (GNP) coating. For comparison, also deposited utilizing identical conditions. The as-deposited characterized detail their microstructure, porosity content, hardness, phase composition. the GNP. showed good microstructural integrity, comparable porosity, higher similar composition as subjected dry sliding wear tests. lower CoF specific rate than pure Additionally, counter surface case Post-wear performed by SEM/EDS differences track ball Furthermore, presence micro-indentation test results indicate that aided improving toughness, lowering compared Results from work demonstrated an SPS processed coating, further design superior wear-resistant
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ژورنال
عنوان ژورنال: Applied Surface Science
سال: 2021
ISSN: ['1873-5584', '0169-4332']
DOI: https://doi.org/10.1016/j.apsusc.2021.151227