Tribocorrosion behavior of boride coating on CoCrMo alloy produced by thermochemical process in 0.35% NaCl solution

Ruiz, M.A. Doñu; Perrusquia, N. López; Renteria-Salcedo, A.; Flores, M.; Anda, E. Rodríguez-De; Mühl, S.; Navarro, Carolina; García, E.

doi:10.1016/j.surfcoat.2021.127698

Cited by 11 publications

(8 citation statements)

References 25 publications

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“…Literatürde kobalt esaslı süper alaşımlar üzerinde ASTM F1537 alaşımı 1000℃'de 6 saat süre ile EKaboron 2 ortamında kutu borlama sonucu alaşımının yüzeyinde 30 µm kalınlığında ve 25 GPa serflik değerine sahip CoB-Co2B'dan oluşmuş bir borür katmanı elde edilmiştir [23]. Bir diğer çalışmada ise Do˜nu-Ruiz et al (2021) CoCorMo alaşımını dehydrated borlama pastası ile 850℃'de 2 saat süre ile pasta borlama sonucu yüzeyde oluşan CoB, Co2B ve CrB fazından oluşmuş borür tabakaları elde ettiklerini bildirmişlerdir [24]. Dolayısıyla, çalışmada elde edilen faz yapısı literatürdeki çalışmalar ile uyumludur.…”

Section: X-ışını Analizleriunclassified

“…(2021) 950℃'de 6 saat süre ile Ekabor 2 ortamında 25.3 µm kaplama kalınlığı elde ettiklerini bildirmişlerdir [25]. Do˜nu-Ruiz et al (2021) CoCorMo alaşımını dehydrated borlama pastası ile 850℃'de 2 saat süre ile pasta borlama sonucu yüzeyde oluşan CoB, Co2B ve CrB fazından oluşmuş 8 µm kalınlığında borür tabakaları elde ettiklerini bildirmişlerdir [24]. Campos-Silva ve ark.…”

Section: şEkil 4 1000℃'de 4 Saat Süre Ile %90 B4c + %10 Nabf4 Tozları...unclassified

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Boronizing of Cobalt Based Haynes 25/L-605 Superalloy

GİRİŞKEN¹,

ÇAM²

2022

JCHAR

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Bu çalışmada, kobalt esaslı Haynes 25 süper alaşımına 900℃'de 2 saat, 900℃'de 4 saat ve 1000℃'de 4 saat süre ile %90 B4C + %10 NaBF4 tozları kullanılarak kutu borlama yöntemi ile borlama işlemi uygulanmıştır. Borlama sonrası numunelerin yüzeyinde oluşturulan borür tabakalarının karakterizasyonu taramalı elektron mikroskobu (SEM), X-ışını difraktometresi (XRD) ve mikrosertlik testleri ile gerçekleştirilmiştir. XRD analizi sonucunda yüzeyde oluşan borür tabakalarında baskın fazın alaşım içeriğine ve difüze bor elementine bağlı olarak CoB fazı olduğu tespit edilmiştir. Ayrıca yapıda düşük miktarlarda (CoFe)B2, CrB ve W3CoB3 fazlarının da bulunduğu gözlenmiştir. Borlama sıcaklık ve süresindeki değişimlere bağlı olarak kaplama kalınlığının yanı sıra sertlik değerlerinde artışlar olmuştur. Kullanılan yüksek konsantrasyonlu borlama tozu sayesinde literatüre göre daha kalın borür tabakaları elde edilmiştir.

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Section: X-ışını Analizleriunclassified

Section: şEkil 4 1000℃'de 4 Saat Süre Ile %90 B4c + %10 Nabf4 Tozları...unclassified

Boronizing of Cobalt Based Haynes 25/L-605 Superalloy

GİRİŞKEN¹,

ÇAM²

2022

JCHAR

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“…The measured COF value remained similar in both cases, uncoated and coated samples, but it decreased to a value of approximately 0.3-0.35. This reduction in COF was produced because the thin fluid film of NaCl present in the surface of the samples worked as a weak lubricant, and the tribolayer formed during the process served to reduce the contact pressure [47,48]. Coated samples presented fluctuations while varying the potential in potentiodynamic polarization, whereas COF maintained stability in uncoated samples.…”

Section: Corrosion and Tribocorrosion Testsmentioning

confidence: 99%

Improvement of the Tribocorrosion Properties of Cemented Carbide (WC-Tic-Co) Samples with PVD Coating

et al. 2022

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This study aims to investigate the improvement of the tribocorrosion properties of WC-TiC-Co substrates by coating them with hard coatings such as AlCrSiN using cathodic arc deposition. WC-TiC-Co is commonly used in the fabrication of machining and cutting tools; however, there are some materials such as titanium or stainless steel that are difficult to work with; furthermore, in aggressive environments or under high temperatures the performance of the machining tools can be affected, and a failure may occur. This coating is intended to ensure the correct performance of the tools in any conditions. The coatings were characterized by glow discharge optical emission spectroscopy (GDOES), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Tribocorrosion, tribology and corrosion tests were performed to evaluate the tribocorrosion properties of the samples. Furthermore, mechanical and adhesive properties of the coating were studied using scratch and nanoindentation tests. The results showed improved tribocorrosion properties in the samples combined with good adhesive and mechanical properties. These results show the possibility of using these coated materials in the most demanding cutting and machining applications.

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“…Several studies have reported improvements in these alloys' wear and oxidation resistance, ranging from room temperature up to 750 • C, thanks to these coatings [17,18]. However, upon reviewing the literature, it can be observed that while these thermomechanical coatings on cobalt-based superalloys have been investigated for their wear resistance in various biological fluids at room temperature [11,19,20], their high-temperature wear behavior has been rarely studied [21].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Characterization and High-Temperature Wear Behaviors of Thermochemical Coatings Applied to Cobalt-Based Haynes 25 Superalloys

Günen

Ergin

2023

Coatings

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This study investigated the characteristic properties of aluminizing, boronizing, and boro-aluminizing coatings grown on Haynes 25 superalloys and their effects on the high-temperature wear behavior. The coating processes were conducted in a controlled atmosphere at 950 °C for 3 h. Characterization studies were performed using scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction analysis, nanoindentation testing, and high-temperature wear tests. It was determined that the thickness values of aluminide, boride, and boride–aluminide coatings were 140 ± 1.50 µm, 37.58 ± 2.85 µm, and 14.73 ± 1.71 µm, and their hardness values were 12.23 ± 0.9 GPa, 26.34 ± 2.33 GPa, and 23.46 ± 1.29 GPa, respectively. The hardness of the coatings resulted in reduced wear volume losses both at room temperature and at 500 °C. While the best wear resistance was obtained in the boronized sample at room temperature due to its high hardness, the best wear resistance at 500 °C was obtained in the boro-aluminized sample with the oxidation–reduction effect of Al content and the lubricating effect of B content in the boro-aluminide coating. This indicates that the presence of aluminum in boride layers improves the high-temperature wear resistance of boride coatings. The coated samples underwent abrasive wear at room temperature, whereas at 500 °C, the wear mechanism shifted to an oxidative-assisted adhesive wear mechanism.

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Tribocorrosion behavior of boride coating on CoCrMo alloy produced by thermochemical process in 0.35% NaCl solution

Cited by 11 publications

References 25 publications

Boronizing of Cobalt Based Haynes 25/L-605 Superalloy

Boronizing of Cobalt Based Haynes 25/L-605 Superalloy

Improvement of the Tribocorrosion Properties of Cemented Carbide (WC-Tic-Co) Samples with PVD Coating

A Comparative Study on Characterization and High-Temperature Wear Behaviors of Thermochemical Coatings Applied to Cobalt-Based Haynes 25 Superalloys

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