Surface & Coatings Technology最新文献_第4页

Improving the tribological and corrosion behavior of NiB coating with low boron content from optimized lead-free bath on aluminum alloys 通过优化无铅浴改善铝合金上低硼含量镍铍涂层的摩擦学和腐蚀行为

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131464

{"title":"Improving the tribological and corrosion behavior of NiB coating with low boron content from optimized lead-free bath on aluminum alloys","authors":"","doi":"10.1016/j.surfcoat.2024.131464","DOIUrl":"10.1016/j.surfcoat.2024.131464","url":null,"abstract":"<div><div>This study focuses on producing environmentally friendly, lead-free nickel‑boron (Ni<img>B) coatings as an alternative to hard chromium coatings. Using the electroless method, the Ni<img>B coatings were fabricated from a lead-free bath, and the effects of varying B and Ni concentrations on the coatings' chemical composition, surface morphology, hardness, corrosion resistance, and wear performance were investigated. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to analyze surface morphology and phase composition. Corrosion performance was evaluated using potentiodynamic polarization (PP) and electrochemical impedance spectroscopy (EIS), while wear behavior was tested at sliding speeds of 20, 30, and 40 cm/s. The study highlights the critical role of sliding speed on wear mechanisms, friction coefficient, wear rate, and surface morphology. The analyses revealed that the optimal Ni<img>B coating, containing 34 g/L Ni and 3 g/L B, exhibited the highest hardness, the lowest corrosion rate, and the highest wear rate performance. The values obtained from these analyses were 891 HV for hardness, 8.87 × 10<sup>−6</sup> mpy for corrosion rate, and 2.21 × 10<sup>−4</sup> mm<sup>3</sup>/N·m for wear rate. The use of analysis of variance (ANOVA) identified key factors influencing these properties. The findings suggest that optimizing boron and nickel concentrations significantly enhances Ni<img>B coatings' corrosion resistance and wear performance, making them suitable for industrial applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Steam oxidation of thermally deposited coatings from 304 L and recycled 316 L/Z100 steels: Influence of temperature, coatings microstructure and steel recycling 304 L 和回收的 316 L/Z100 钢热沉积涂层的蒸汽氧化：温度、涂层微观结构和钢回收的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131478

{"title":"Steam oxidation of thermally deposited coatings from 304 L and recycled 316 L/Z100 steels: Influence of temperature, coatings microstructure and steel recycling","authors":"","doi":"10.1016/j.surfcoat.2024.131478","DOIUrl":"10.1016/j.surfcoat.2024.131478","url":null,"abstract":"<div><div>The application of thermally sprayed stainless steels coatings is a well-established approach to protecting low-alloy steels against high-temperature degradation. In this study, we investigated both: (1) the influence of microstructural features of the coatings and (2) the recycling of stainless steels on the course of high temperature steam oxidation. It was achieved by thermally spraying coatings on C45 steel from 304 L and a new type of 316 L/Z100 steel, obtained as a result of mixed scraps recycling. Steam oxidation tests carried out in the temperature range 600–800 °C for 500 h in pure steam show temperature depended mechanism of oxidation, which was defined and described. The formation of the scales with a multi-layered structure was observed, consisting of Fe<sub>2</sub>O<sub>3</sub>, Fe<sub>3</sub>O<sub>4,</sub> Cr<sub>2</sub>O<sub>3</sub>, Fe- or Cr-rich Cr<sub>x</sub>Fe<sub>x-2</sub>O<sub>3</sub> and (Mn,Cr,Ni)<sub>x</sub>Fe<sub>3-x</sub>O<sub>4</sub> spinels. The relative ratio of the phases and their presence in particular scale layers varied depending on the material studied and the exposure temperature. The key findings are that recycling of steel deposited as protective coating has led to an unintended change in Si and C concentrations, which may affects course of oxidation. Also, the microstructure of the initial coatings, consisting of porosity and a significant volume of oxides formed during steel deposition, inhibits the formation of a homogeneous layer of protective Cr<sub>2</sub>O<sub>3</sub>. As a result, the established values of oxidation kinetics constants (in range of 8.55E-12 to 1.50E-10 g<sup>3</sup>·cm<sup>−6</sup>·s<sup>−1</sup> for 316 L/Z100 and 2,71E-12 to 4.60E-10 g<sup>3</sup>·cm<sup>−6</sup>·s<sup>−1</sup> for 304 L coatings) and oxidation activation energies (156.4 kJ·mol<sup>−1</sup> for 316 L/Z100 and 211.5 kJ·mol<sup>−1</sup> for 304 L coatings) differ significantly from those of bulk steels under the same conditions reported in the literature.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Minimum Energy Atomic Deposition: A novel, efficient atomistic simulation method for thin film growth 最小能量原子沉积：用于薄膜生长的新型高效原子模拟方法

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131462

{"title":"Minimum Energy Atomic Deposition: A novel, efficient atomistic simulation method for thin film growth","authors":"","doi":"10.1016/j.surfcoat.2024.131462","DOIUrl":"10.1016/j.surfcoat.2024.131462","url":null,"abstract":"<div><div>Thin-film growth is an area of research concerned with complex phenomena happening at atomic scales. Therefore, molecular simulation has been an important tool to confront experimental results to theoretical assumptions. However, the traditional thin film growth simulation methods, i.e., Molecular Dynamics (MD) and kinetic Monte-Carlo (kMC) and combinations thereof, suffer from limitations inherent to their design, i.e., limitations in system size and simulation time for MD and predetermined reaction rates and reaction sites for kMC. Consequently, it is practically impossible to simulate the evolution of polycrystalline growth resulting in <span><math><mo>∼</mo></math></span>100nm thick films with realistic stress fields and defect structures, such as grain boundaries, stacking faults, etc. In this work, we propose a versatile and efficient atomistic simulation method (Minimum Energy Atomic Deposition) which works by direct insertion of atoms at points of minimal potential energy through efficient scanning of candidate positions and rapid relaxation of the system. This method allows simulating <span><math><mo>≥</mo></math></span>100nm film thickness while mimicking experimental growth rates and high crystallinity and low-defect concentration and enables in-depth studies of atomic growth mechanisms, the evolution of crystal defects, and residual stress build-up. We demonstrate the efficiency and versatility of the method through the deposition of Al on Si, Al on Al, and Si on Si. The simulation results are systematically compared with experimental observations of thin-film deposition, yielding consistent observations. The method has been implemented in open-source LAMMPS software, making it easily accessible to the research community.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and tribological performance of Ni-SiC composite coating on 304 stainless steel through brush plating 通过刷镀制备 304 不锈钢上的 Ni-SiC 复合涂层及其摩擦学性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131491

{"title":"Preparation and tribological performance of Ni-SiC composite coating on 304 stainless steel through brush plating","authors":"","doi":"10.1016/j.surfcoat.2024.131491","DOIUrl":"10.1016/j.surfcoat.2024.131491","url":null,"abstract":"<div><div>The low hardness of 304 stainless steels makes them susceptible to wear, which increasing the probability of workpiece failure during actual use. In this study, a Ni-SiC composite coating was successfully prepared on 304 stainless steel using brush plating equipment, effectively enhancing the material's surface wear resistance. By characterizing the microstructure and properties of the composite plating layer, we determined the optimal process parameters for brushing Ni-SiC wear-resistant plating and revealed the wear mechanism of this protective layer. When the parameters for preparing the composite plating coating were adjusted to a voltage of 10 V, a relative motion rate of 8 m/min, a plating solution temperature of 50 °C and a SiC concentration of 15 g/L, the resulting wear-resistant plating coating exhibited an impressive microhardness value of 457 HV<sub>0.1</sub> and a friction coefficient of 0.46. It was observed that the fatigue wear mechanism dominated in Ni-SiC composite coatings with a solution SiC concentration below 5 g/L, while oxidative and abrasive wear mechanisms were dominant in Ni-SiC composite coatings with solution SiC concentrations exceeding 10 g/L.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on corrosion resistance of galvanised steel passivated by a silanised cerium-tannic acid solution 硅烷化铈-单宁酸溶液钝化镀锌钢的耐腐蚀性研究

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131483

引用次数: 0

Impact of sulfate to chloride ratio on titanium aluminide coating's high temperature corrosion performance in settings mimicking waste incineration 硫酸盐与氯化物比率对铝化钛涂层在模拟垃圾焚烧环境中高温腐蚀性能的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131463

引用次数: 0

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131418

{"title":"Highly correlated deposition characteristics between individual elemental powders and elemental powder blends of MoNbTaTi in laser melt deposition","authors":"","doi":"10.1016/j.surfcoat.2024.131418","DOIUrl":"10.1016/j.surfcoat.2024.131418","url":null,"abstract":"<div><div>The laser melt deposition process often involves fabricating custom alloys from cost-effective elemental powder blends. However, discrepancies between the nominal ratio of the pre-mixed powders and the final composition of the deposited part are commonly observed due to variations in the material properties of the elemental powders. In this study, separate experiments were employed to investigate the relationship of deposition characteristics between individual elemental powders and elemental powder blends in the laser melt deposition process. To investigate the spatial distribution between elemental powder particles, powder flow characteristics in four different delivery systems were measured. Single-track deposition experiments were deployed to study the real powder catchment efficiency of elemental powder and the final composition of the deposited layer. In addition, a finite element model was established and validated with experimental data to predict the dilution rate and final chemical composition of the deposited layer. The experimental results indicate a strong correlation between the powder catchment efficiency of individual elemental powder and the final composition of the deposited layer. The simulation results agreed well with the actual composition of the deposited track. This study’s findings have the potential to predict and optimize the composition of the desired materials fabricated by elemental powder blends in the laser melt deposition process.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing hot corrosion resistance of N-doping NiCoCr-based superalloy coatings fabricated by directed energy deposition in mixed molten salts 在混合熔盐中通过定向能沉积提高掺杂 N 的镍钴铬基超合金涂层的耐热腐蚀性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131501

引用次数: 0

Improved strategy of oxygen-assist heat treatment to prepare the antioxidant coating for carbon/carbon composites 制备碳/碳复合材料抗氧化涂层的氧辅助热处理改进策略

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131500

引用次数: 0

Improvement of fatigue life by aluminizing of additive manufactured Fe- and Ni-base alloy 通过为添加剂制造的铁基和镍基合金镀铝提高疲劳寿命

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-10-30 DOI: 10.1016/j.surfcoat.2024.131493

{"title":"Improvement of fatigue life by aluminizing of additive manufactured Fe- and Ni-base alloy","authors":"","doi":"10.1016/j.surfcoat.2024.131493","DOIUrl":"10.1016/j.surfcoat.2024.131493","url":null,"abstract":"<div><div>Laser powder bed fusion (PBF-LB/M) is used in various industries to manufacture complex parts with high precision. High surface roughness and porosity have a negative impact on fatigue resistance. This work presents aluminum pack cementation as a method to reduce surface roughness and improve fatigue resistance of AM parts. An Fe-base alloy (Alloy 800H) and a Ni-base alloy (Alloy 699XA) are selected. Some of the specimens made from PBF-LB/M were treated by pack cementation with aluminum, while others were subjected to the vibratory finishing process. The surface roughness, microhardness distribution and the microstructure of the interface zone were measured and analyzed for the as-built, vibratory finished and aluminized specimens. Rotating bending fatigue test was performed at room temperature. Conventionally fabricated specimens of both investigated alloys were tested under the same conditions to evaluate the effects of pack cementation. The aluminized samples (PBF-LB/M) show a significant reduction in surface roughness with a decrease of 45 % for Alloy 800H and 65 % for Alloy 699XA. This leads to an improvement in fatigue life for both Alloy 800H and Alloy 699XA. In contrast, the conventionally fabricated specimens exhibited increased surface roughness after pack cementation compared to their initial condition and showed a significant reduction in fatigue resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0