Investigation of the Effect of Deep Cryogenic Treatment with Different Holding Time on the Corrosion Behavior of Cementation Steel

GÜNEY, Furkan; Kam, Menderes; Gerengi, Hüsnü; Kaya, Ertuğrul; Yıldız, Mesut

doi:10.35193/bseufbd.1021338

Cited by 3 publications

(2 citation statements)

References 26 publications

(24 reference statements)

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“…W-P ise Warburg kısmının eğimini temsil etmektedir. Çizelge 2'deki veriler analiz edildiğinde Rs ile gösterilen çözeltiye ait direncin bütün kaplama numunelerinde benzer değerlerde olduğu göze çarpmaktadır, bu durum korozyon deneylerinin yapıldığı çözeltilerin benzer standartlarda olduğunu göstermektedir [30]. Şekil 7'de aynı zamanda Çizelge 2'de de verilen paslanmaz çelik altlık, saf nikel, Ni-B alaşım ve nanokompozit kaplamaların EES yöntemiyle elde Ç.Ü.…”

Section: Ees Yöntemi Ile Korozyon Analiziunclassified

Ni-B/TiC Nanokompozit Kaplamaların Korozyon Dayanımlarının Elektrokimyasal Empedans Spektroskopisi (EES) Yöntemi ile Analizi

Ünal

Yaşar

Karahan

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Makine parçaları korozyon ve aşınma gibi malzeme yüzeylerinde hasara neden olan çeşitli etkilere maruz kalmaktadır. Malzeme yüzeylerinin bu zararlı etkilerden korunması için çeşitli ve etkili yöntemler bulunmaktadır. Elektrokimyasal kaplama bu yöntemlerden en çok tercih edilenlerden bir tanesidir. Bu çalışmada, Ni-B alaşımı ana yapısı titanyum karbür (TiC) takviye parçacıkları ile desteklenerek, sanayide kullanımı çok tercih edilen AISI 304 kalite paslanmaz çelik üzerine elektrokimyasal depolama metodu ile kaplanmıştır. Elde edilen bu kaplamaların korozyon dayanımları elektrokimyasal empedans spektroskopisi (EES) yöntemi ile analiz edilmiştir. Mukayese yapmak amacıyla paslanmaz çelik altlığın korozyon direncinin yanı sıra, saf nikel ve Ni-B alaşım kaplamalarda üretilmiş ve korozyon direnci incelenmiştir. Elde edilen sonuçlara göre, Ni-B/TiC nanokompozit kaplamaların Nyquist eğrilerinin, paslanmaz çelik, saf nikel ve Ni-B alaşıma göre çok daha kapsayıcı ve geniş görünümlü olduğu tespit edilmiştir. Aynı zamanda Bode grafiğindeki nanokompozit kaplamalara ait faz açısı değerleri de yine çok daha yüksek elde edilmiştir. Nyquist eğrilerinin eş değer devre uydurma işlemiyle hesaplanan korozyon direnç değerlerine göre, en iyi korozyon dayanımını 12 g/l TiC banyo parçacık içerikli nano kompozit numune sergilemiştir. Bu numunenin direnç değeri paslanmaz çeliğe göre ~%280, saf nikele göre ~%235, Ni-B alaşıma göre ise ~%307 civarlarında daha yüksek elde edilmiştir. Elde edilen bu sonuçlara göre, Ni-B alaşımını TiC ile takviye etmenin korozyondan korunma açısından son derece etkili olduğu anlaşılmıştır.

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Section: Ees Yöntemi Ile Korozyon Analiziunclassified

Ni-B/TiC Nanokompozit Kaplamaların Korozyon Dayanımlarının Elektrokimyasal Empedans Spektroskopisi (EES) Yöntemi ile Analizi

Ünal

Yaşar

Karahan

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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“…Owing to the shallow and deep cryogenic processes (SC and DC) applied, improvements such as a reduction in the percentage of retained austenite and carbide volume and a more homogeneous distribution of carbides in the microstructure are provided [9][10][11][12][13][14][15][16][17]. As a result of all these important improvements in the microstructure, there is an increase in the important properties of tool steels such as wear resistance, hardness and tool life [15,[18][19][20]. Considering tool life, which is one of these very important improvements, it has been stated that even better results (by nearly 110%) have been obtained from TiN coated tools [21].…”

Section: Introductionmentioning

confidence: 99%

Performances of cryo-treated and untreated cutting tools in machining of AA7075 aerospace aluminium alloy

Adin

2023

European Mechanical Science

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The quality of drilled holes in aluminium alloys used in the aerospace industry is vital to ensure high-precision structural integrity. For this reason, optimum selection of cost-effective cutting tools and cutting parameters is of great importance. Nowadays, due to their high cost and supply difficulties, there is a great interest in improving the performance of traditional HSS cutting tools as an alternative to ceramic, carbide and coated cutting tools. HSS cutting tools are widely used in different industries due to their cost-effectiveness and suitability to improve tool performance. In this research, the performances of cryo-treated (DC&T) and untreated (UT) HSS cutting tools used in dry machining of AA7075 aluminium alloys were investigated. Thanks to DC&T processes applied to HSS cutting tool, improvements have occurred in its microstructure. The hardness value of HSS cutting tool increased by 6.89% with the effect of DC&T processes applied. When the highest and lowest Ra values obtained using DC&T and UT HSS cutting tools were compared, it was seen that DC&T HSS cutting tool performed better by 11.05% and 25.91%, respectively. It has been determined that the hole surface quality of the aluminium workpiece machined with DC&T and UT HSS drills is negatively affected by the increase in spindle speed and feed rate. The highest S/N ratios calculated according to Ra values of holes drilled on aluminium workpieces using DC&T and UT HSS cutting tools were found to be -7.12 dB (2.27 μm) and -9.62 dB (3.03 μm), respectively. In the ANOVA analysis, it was determined that the most effective parameters on Ra values were spindle speed (70.62%), tools (18.19%) and feed rate (9.98%), respectively. In the regression analysis, R2 value for Ra values was calculated as 98.30%. High R2 value result shows that the model developed is quite successful in estimating Ra values.

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Corrosion inhibition analysis on cerium induced hydrophobic surface of Al-6061/SiC/Al₂O₃ hybrid composites

Sharma,

Kumar,

Akhai

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part B:

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A new kind Al-6061/SiC/Al2O3 hybrid composite was prepared with traces amount of cerium oxide and its corrosion performance was evaluated by potentio-dynamic polarization electrochemical method. A new kind of intermetallic (γ-phase) has been observed in the microstructure with higher content of cerium oxide and Al elements. The corrosion resistance of Al-6061 alloy improved with addition of cerium oxide and this improvement could attribute to depression of the micro-galvanic couples. The corrosion rates were observed as 0.16 and 0.034 mpy corresponding to 3.5 and 2.5 wt% of NaCl corresponding to 2.5 wt% of cerium oxide. Moreover, the formation of cerium oxide and Al enrichment film over the surface of hybrid composites was also found to be main key factor for the inhibition of corrosion resistance. Another key factor that inhibits the further corrosion was observed as hydrophobicity between the aluminium liquid matrix and Al2O3/SiC reinforcement after incorporation of cerium oxide. Improvement in hydrophobicity of composites with Al2O3/SiC is due to increase in contact angle up to 100.78° after addition of 2.5 wt% cerium oxide. Micro-hardness and impact strength of the hybrid composites improved significantly after addition of traces amount of REOs from 0.5 to 2.5 wt%.

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Investigation of the Effect of Deep Cryogenic Treatment with Different Holding Time on the Corrosion Behavior of Cementation Steel

Cited by 3 publications

References 26 publications

Ni-B/TiC Nanokompozit Kaplamaların Korozyon Dayanımlarının Elektrokimyasal Empedans Spektroskopisi (EES) Yöntemi ile Analizi

Ni-B/TiC Nanokompozit Kaplamaların Korozyon Dayanımlarının Elektrokimyasal Empedans Spektroskopisi (EES) Yöntemi ile Analizi

Performances of cryo-treated and untreated cutting tools in machining of AA7075 aerospace aluminium alloy

Corrosion inhibition analysis on cerium induced hydrophobic surface of Al-6061/SiC/Al₂O₃ hybrid composites

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Investigation of the Effect of Deep Cryogenic Treatment with Different Holding Time on the Corrosion Behavior of Cementation Steel

Cited by 3 publications

References 26 publications

Ni-B/TiC Nanokompozit Kaplamaların Korozyon Dayanımlarının Elektrokimyasal Empedans Spektroskopisi (EES) Yöntemi ile Analizi

Ni-B/TiC Nanokompozit Kaplamaların Korozyon Dayanımlarının Elektrokimyasal Empedans Spektroskopisi (EES) Yöntemi ile Analizi

Performances of cryo-treated and untreated cutting tools in machining of AA7075 aerospace aluminium alloy

Corrosion inhibition analysis on cerium induced hydrophobic surface of Al-6061/SiC/Al2O3 hybrid composites

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Corrosion inhibition analysis on cerium induced hydrophobic surface of Al-6061/SiC/Al₂O₃ hybrid composites