Synthesis and characterization of wear and corrosion resistant Ni-doped Al2O3 nanocomposite ceramic coatings by sol-gel method

Yetim, Tuba; Turalıoğlu, Kerem; Taftalı, Merve; Tekdir, H.; Kovacı, H.; Yetim, A.F.

doi:10.1016/j.surfcoat.2022.128659

Cited by 29 publications

(8 citation statements)

References 32 publications

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“…The wear mechanism of copper substrate is adhesive wear. This can be confirmed by the obvious scratches on the wear surface and the plate-like wear debris [ 30 , 31 ]. The dominance of adhesive wear is due to the significantly higher hardness of the wear ball (GCr15) relative to copper substrate.…”

Section: Resultsmentioning

confidence: 90%

A Novel Superhard, Wear-Resistant, and Highly Conductive Cu-MoSi2 Coating Fabricated by High-Speed Laser Cladding Technique

Li,

Zhao,

Zhai

et al. 2023

Materials

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The pursuit of an advanced functional coating that simultaneously combines high hardness, wear resistance, and superior electrical conductivity has remained an elusive goal in the field of copper alloy surface enhancement. Traditional solid solution alloying methods often lead to a significant increase in electron scattering, resulting in a notable reduction in electrical conductivity, making it challenging to achieve a balance between high hardness, wear resistance, and high conductivity. The key lies in identifying a suitable microstructure where dislocation motion is effectively hindered while minimizing the scattering of conductive electrons. In this study, a novel Cu-MoSi2 coating was successfully fabricated on a CuCrZr alloy surface using the coaxial powder feeding high-speed laser cladding technique, with the addition of 10–30% MoSi2 particles. The coating significantly enhances the hardness and wear resistance of the copper substrate while maintaining favorable electrical conductivity. As the quantity of MoSi2 particles increases, the coating’s hardness and wear resistance gradually improve, with minimal variance in conductivity. Among the coatings, the Cu-30%MoSi2 coating stands out with the highest hardness (974.5 HV0.5) and the lowest wear amount (0.062 mg/km), approximately 15 times the hardness of the copper base material (65 HV0.5) and only 0.45% of the wear amount (13.71 mg/km). Additionally, the coating exhibits a resistivity of 0.173 × 10−6 Ω·m. The extraordinary hardness and wear resistance of these coatings can be attributed to the dispersion strengthening effect of MoxSiy particles, while the high electrical conductivity is due to the low silicon content dissolved into the copper from the released MoSi2 particles, as well as the rapid cooling rates associated with the high-speed laser cladding process.

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Section: Resultsmentioning

confidence: 90%

A Novel Superhard, Wear-Resistant, and Highly Conductive Cu-MoSi2 Coating Fabricated by High-Speed Laser Cladding Technique

Li,

Zhao,

Zhai

et al. 2023

Materials

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“…Furthermore, some other ceramic coatings can be prepared on the surfaces of SLM Ti and its alloy implants. For example, Yetim et al [ 170 ] produced ZnO and TiO 2 /ZnO multilayer coatings on SLM Ti6Al4V/316L sample using sol–gel method, Zhang et al [ 177 ] produced Ta 2 O 5 coating on SLM porous Ti6Al4V alloy sample using ALD method, Yan et al [ 224 ] produced Al 2 O 3 coating on SLM Ti6Al4V alloy sample using MAO method, and Wang and Zhang [ 234 ] produced SiO 2 and ZrO 2 coatings on SLM Ti6Al4V alloy samples using MAO method. Significantly, the coatings of CaTiO 3 and HA, which contain the ions of Ca and P, are considered to be the most effective and reliable bioactive coatings.…”

Section: Discussionmentioning

confidence: 99%

“…With the presence of MBG nanospheres, the initial hydrophobic surface of the SLM Ti implant was altered into superhydrophilic. Yetim et al [ 170 ] deposited ZnO, TiO 2 monolayer, ZnO–TiO 2 composite, and ZnO/TiO 2 , TiO 2 /ZnO multilayer coatings on SLM Ti6Al4V/316L sample using sol–gel method. The best corrosion resistance was acquired for the multilayer coating (ZnO/TiO 2 ).…”

Section: Chemical Methodsmentioning

confidence: 99%

Surface Modification of Porous Titanium and Titanium Alloy Implants Manufactured by Selective Laser Melting: A Review

Liu,

Li,

Wang

et al. 2023

Adv Eng Mater

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Titanium (Ti) and its alloy implants with porous structure manufactured by selective laser melting (SLM) can match elastic modulus of human bone to reduce the stress‐shielding effect and satisfy the personalized requirement in orthopedic surgery. Compared with conventional casting and forging Ti and its alloy implants, SLM implants possess unique microstructural features and excellent comprehensive mechanical properties. However, the un‐melted powder particles inevitably adhere to the surfaces of SLM implants, which may result in excessive surface roughness and potential health risks. Moreover, there are significant issues encountered, such as bioactivity, toxicity, antibacterial activity, corrosion and wear resistance. Consequently, surface modification methods are essential to remove the un‐melted powder particles and improve biological and mechanical properties of SLM implants. Herein, the research efforts focus exclusively on chemical (acid treatment, alkali treatment, sol‐gel, chemical vapor deposition and atomic layer deposition) and electrochemical methods (anodization and microarc oxidation) for SLM Ti and its alloy implants, especially for porous structures. Particularly, the characteristics of these methods are summarized, and their commonly used pre‐ and post‐treatment methods are introduced. In addition, the development trends and challenges in surface modification of SLM Ti and its alloy implants are discussed.This article is protected by copyright. All rights reserved.

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“…When the ceramic coatings are considered in themselves, the difference in current density, resistance, and corrosion rates is thought to be related to two factors. The first of these is the structural properties of the film such as the thickness, roughness, integrity, and chemical content [5,6,34,[45][46][47][48][49][50][51]. The more homogeneous and compact the coatings are on the surface, the less deformation could be mentioned.…”

Section: Microstructural and Morphological Examinationsmentioning

confidence: 99%

Electrochemical Behavior of CoO/Ag2O/TiO2 Ceramic and Composite Coated Selective Laser Manufactured 316L Stainless Steel

Yetim

2023

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Seçici lazer ergitme eklemeli üretim yöntemi ile üretilmiş 316L paslanmaz çeliğinin korozyon direncini artırmak için ayrı ayrı Ag2O, CoO, ve TiO2 ve Ag2O/CoO/TiO2 kompozit seramik film 316L yüzeyine sol-jel dip kaplama metodu ile kaplandı. Kaplanmış ve kaplanmamış numunelerin yapısal özellikleri XRD ve SEM ile karakterize edildi. Numunelerin tamamının korozyon direnci simüle edilmiş yapay tükürük sıvısı içerisinde potansiyodinamik polarizasyon ve elektrokimyasal empedans spektroskopi (EIS) testleri değerlendirildi. Test sonuçlarına göre, oldukça yoğun, kolonsal ve porlu olmayan, kompakt ve 30-40 μm kalınlığında seramik oksit filmler 316L yüzeyinde oluşturuldu. Ayrıca bütün seramik filmler 316L yüzeyinin korozyon direncini artırdı. En yüksek korozyon dirençli yüzey Ag2O/CoO/TiO2 kompozit seramik film kaplı 316L yüzeyinde elde edildi.

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Synthesis and characterization of wear and corrosion resistant Ni-doped Al2O3 nanocomposite ceramic coatings by sol-gel method

Cited by 29 publications

References 32 publications

A Novel Superhard, Wear-Resistant, and Highly Conductive Cu-MoSi2 Coating Fabricated by High-Speed Laser Cladding Technique

A Novel Superhard, Wear-Resistant, and Highly Conductive Cu-MoSi2 Coating Fabricated by High-Speed Laser Cladding Technique

Surface Modification of Porous Titanium and Titanium Alloy Implants Manufactured by Selective Laser Melting: A Review

Electrochemical Behavior of CoO/Ag2O/TiO2 Ceramic and Composite Coated Selective Laser Manufactured 316L Stainless Steel

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