Multifunctional electroless nickel boron composite coatings incorporated by magnesium diboride ceramic particles
Küçük Resim Yok
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, the role of MgB2 in composite coatings is pivotal. Electroless Ni-B plating, a current-free chemical reduction process, deposits nickel-boron coatings. Other than MgB2, reinforcements like SiC, B4C, and so forth are used with Ni-B coatings for improved properties. The research focuses on Ni-B/MgB2 coatings on AISI 4140 steel using electroless deposition and annealing at different temperatures. Initially, the coating appears dense and amorphous, transforming into worm-like structures through crystallization with MgB2. Higher annealing temperatures lead to brush-like, feathery, and oyster mushroom structures, forming crystalline nickel boron compounds and oxide phases due to synergy. Interestingly, the newly introduced phases disrupt friction patterns nonlinearly, which is linked to MgB2's ceramic nature and reinforcement quantity. Conversely, incorporating MgB2 and annealing-induced intermetallic phases notably enhances hardness (up to 6) and improves hydrophilicity and antibacterial traits in the coating.
Açıklama
Anahtar Kelimeler
composite coating, electroless deposition, MgB2, Ni-B
Kaynak
International Journal of Ceramic Engineering and Science
WoS Q Değeri
N/A
Scopus Q Değeri
Q3
