Görüntüleme
23
İndirme
4
Bu çalışmada, 1050 alüminyum alaşım yüzeyine hekzagonal bor nitrür (h-BN) ilaveli akımsız nikel-fosfor (Ni-P) kompozit kaplama uygulanmış ve 400°C’de 1 saat süreyle yapılan ısıl işlemin kaplama yapısına etkisi incelenmiştir. Kompozit kaplamalar, üç farklı miktarda (1, 5 ve 10 g/L) h-BN içeren çözeltide yapılmıştır. Kaplamalara, Taramalı Elektron Mikroskobu (SEM), X-ışını spektroskopisi (EDS), X-ışını kırınımı (XRD) analizleri yapılmıştır. Bunlara ilaveten yüzey pürüzlülükleri, sertlikleri ölçülmüş ve %3,5 sodyum klorür (NaCl) çözeltisi içinde elektrokimyasal korozyon deneyleri yapılmıştır. Amorf yapıdaki nikel matrisin ısıl işlem ile kristalin yapıya dönüştüğü tespit edilmiştir. Isıl işlem sonucu sertlik değerleri artmış ve en yüksek sertlik değerine (1015 ± 41 HV0,05), 10 g/L h-BN içerikli çözeltide yapılan kaplamada ulaşılmıştır. Elektrokimyasal deneylerde ise ısıl işlemin kompozit kaplamaların korozyon direncini azalttığı belirlenmiştir.
In this study, the 1050 aluminum alloy surface has been applied an extra fluid nickel-phosphorus (Ni-P) composite coating with hexagonal bor nitrate (h-BN) and the effect of heat processing performed for 1 hour at 400°C has been studied on the coating structure. Composite coatings are made in a solution containing three different amounts (1, 5 and 10 g/L) of h-BN. For the coverage, screening electron microscope (SEM), X-ray spectroscopy (EDS), X-ray breakdown (XRD) analyses were made. In addition, the surface smoothness and hardness were measured and electrochemical corrosion tests were conducted in a 3.5% sodium chloride (NaCl) solution. It has been found that the nickel matrix in the amorphic structure is converted into a crystal structure by thermal processing. As a result of the heating process, the hardness values have increased and the highest hardness values (1015 ± 41 HV0,05) have been achieved in 10 g/L h-BN solution cover. In electrochemical experiments, it has been found that the heat process reduces the corrosion resistance of composite coatings.
In this study, surfaces of 1050 aluminium alloy were coated with hexagonal boron nitride (h-BN) reinforced electroless nickel-phosphorus (Ni-P) composite coating and the effect of heat treatment on the coating structure for 1 hour at 400°C was investigated. Composite coatings were performed in solutions which consist of three different compositions (1, 5 and 10 g/L) of h-BN. A scanning electron microscope (SEM), X-ray spectroscopy (EDS) and X-ray diffraction (XRD) analysis were performed on the composite coatings. Additionally, surface roughness and hardness were measured and finally, electrochemical corrosion experiments were conducted in 3.5% sodium chloride (NaCl) solution. The heat treatment process has identified a transition from amorphous structure to crystalline in the nickel matrix. The result of heat treatment, hardness values increased and the highest value of hardness (1015 ± 41 HV0.05) was achieved with the specimen coated in 10 g/L h-BN solution. In the electrochemical experiments, a reduction in corrosion resistance of the composite coatings was determined the result of heat treatment.
Alan : Fen Bilimleri ve Matematik; Mühendislik; Sağlık Bilimleri
Dergi Türü : Ulusal
Makale Detay 
Benzer Makaleler
PDF Görüntüle
Dergi Bilgisi
Eseri Dinleyin
Alıntı Yap
Bu Sayfayı Yazdırın
Paylaş
Mendeley
