Surface & Coatings Technology最新文献

{"title":"Mechanical and electrochemical properties of CrAl-CrAlN and CrAl-CrAlN-(a-CNx) multilayer coatings obtained from Cr/Al sectioned targets deposited by HIPIMS","authors":"C.J. Martínez-González ,&nbsp;D. Bravo-Barcenas ,&nbsp;J. Pérez-Alvarez ,&nbsp;O. Jiménez ,&nbsp;M. Flores","doi":"10.1016/j.surfcoat.2025.132706","DOIUrl":"10.1016/j.surfcoat.2025.132706","url":null,"abstract":"<div><div>The present study analyzed the mechanical and elasto-plastic properties of three multilayer CrAl/CrAlN coatings, which were deposited from a Cr/Al target with a volumetric ratio of 25:75. The top layer of (a-CN_x) was deposited by high-power magnetron sputtering (HIPIMS) on A11 tool steel. The study then compared these coatings with those of previous studies. A range of analytical techniques were employed to characterize these coatings. The structural and phase composition of the coatings was determined through the utilization of X-ray diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS) techniques. Scanning electron microscopy (FE-SEM) was utilized to ascertain the thickness, microstructure, and scratch failure mechanisms of the coatings. To determine the elastoplastic properties and quantitative adhesion resistance, nanoindentation and micro-scratch tests were performed, respectively. In order to establish corrosion resistance, a series of electrochemical corrosion tests were developed. These include open circuit potential (OCP) behavior, electrochemical impedance spectroscopy (EIS) tests, and potentiodynamic polarization (PP) tests. XRD revealed the presence of a CrAlN FCC structure (111). XPS analysis confirmed the assumed chemical composition of the coatings, with the characteristic peaks corresponding to the binding energies of Cr, Al and N, respectively. The FE-SEM characterization of the CrAl/CrAlN multilayer coatings revealed the presence of three distinct layer thicknesses, measuring 1.56, 1.26, and 1.33 μm, respectively. Additionally, a glassy-like morphology was observed in the CrAl layer and in the (a-CN_x) top layer, where the CrAlN layers exhibited a columnar morphology. The findings of the nanoindentation experiment demonstrated elevated superficial levels of hardness, with measured values of 30.42 ± 2.3 GPa, 25.83 ± 2.2 GPa, and 23.56 ± 2.1 GPa, respectively. The CrAl/CrAlN–(a-CN_x)t₂ multilayer demonstrated the most robust scratch resistance and the highest adhesive energy values (0.5349 ± 0.009 GPa and 0.7878 ± 0.014 J/m², respectively). The EIS and PD tests in a 3.5 wt% NaCl dissolution demonstrated an enhancement in the corrosion resistance of the (a-CN_x) top layer, exhibiting up to 15 times greater R_p values compared to the AISI A11 substrate. The OCP, EIS and PP values confirmed that CrAl/CrAlN multilayer coatings deposited from a 25:75 vol% Cr/Al sectioned target have superior anticorrosive properties.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132706"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160081","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}

{"title":"Phase and tribological behavior of Al0.5Ti2NbVZrx lightweight refractory HEA coatings","authors":"Ruirui Dai ,&nbsp;Hainan Wang ,&nbsp;Ao Wei ,&nbsp;Heran Geng ,&nbsp;Xiaohui Zhao ,&nbsp;Abul Fazal Muhammad Arif ,&nbsp;Junfeng Yuan","doi":"10.1016/j.surfcoat.2025.132731","DOIUrl":"10.1016/j.surfcoat.2025.132731","url":null,"abstract":"<div><div>To extend the service life of high-temperature components, lightweight refractory high-entropy alloy (LRHEA) coatings of Al_0.5Ti₂NbVZr_x (x = 0, 0.5, 1, 1.5) were prepared on Ti6Al4V substrates by laser cladding. Their microstructure, phase composition, mechanical properties, and tribological behavior over a wide temperature range were systematically investigated. The results showed that the Zr addition is correlated with the suppression of needle-like BCC precipitates. A single β phase with BCC structure was obtained at x = 0.5, whereas excessive Zr content (x ≥ 1) induced the Al₂Zr precipitation. The microhardness was improved from 505.53 HV_0.3 (Zr₀) to 715.97 HV_0.3 (Zr_1.5) with Zr content elevation, while nanoindentation revealed enhanced resistance to plastic deformation, primarily attributed to solid-solution strengthening and grain refinement. Furthermore, secondary phase strengthening was evident in the Zr₁ and Zr_1.5 coatings. The Zr_0.5 coating demonstrated the best wear resistance at 25 °C, 400 °C, and 600 °C. Especially at 600 °C, the wear rate reached its lowest value of 3.04 × 10⁻⁵ mm³/(N·m). XPS analysis revealed that a uniform and compact oxide layer consisting of ZrO₂, Al₂O₃, and TiO₂ formed on the surface of the Zr_0.5 coating during the wear process, indicating that appropriate Zr addition enhanced its high-temperature wear resistance. This study offers valuable guidance on the design of Zr-doped LRHEA coatings for high-temperature friction applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132731"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160079","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}

{"title":"Construction and anticorrosive mechanism of external cation/internal anion-selective bipolar magnesium alloy MAO/WPU coatings","authors":"Siying Zhang ,&nbsp;Guanjin Li ,&nbsp;Shan Wan ,&nbsp;Bokai Liao ,&nbsp;Xingpeng Guo","doi":"10.1016/j.surfcoat.2025.132729","DOIUrl":"10.1016/j.surfcoat.2025.132729","url":null,"abstract":"<div><div>Magnesium alloy micro-arc oxidation (MAO) film/waterborne polyurethane (WPU) composite coating has been widely applied in the automotive, electronic communication, and aerospace fields because of high corrosion resistance, environmental friendliness, and low cost. Although the high corrosion resistance of magnesium alloy MAO/WPU coatings mainly depends on their compactness, the ion selectivity of the coating determines the migration rate of corrosive medium and thus significantly affects corrosion behavior of magnesium alloy beneath the coating. In view of this, a novel MAO/WPU composite bipolar coating with inner anion-selective and outer cation-selective was constructed on the magnesium alloy for enhancing its anti-corrosion performance. Through regulating the ion selectivity of the MAO film and the WPU coating respectively, two types of external cation/internal anion-selective and external cation/internal cation-selective coatings were successfully prepared. Corrosion resistance of the former is significantly superior to the latter through electrochemical impedance spectra measurement in the salt-water immersion accelerated test. To further elucidate the influence of ion selectivity on the corrosion resistance, the I-V curve characteristics are analyzed and ion-transporting behavior of the bipolar coatings is revealed, whose outer-cation/inner-anion structure resembles that of a semiconductor p-n junction, exhibiting unidirectional cation conduction and anion blocking. The EDS elemental analysis results confirm that coating failure is mainly driven by localized Cl⁻ enrichment. This work offers a novel insight into improving the corrosion resistance of anti-corrosion coating by governing its ion selectivity.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132729"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160083","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}

{"title":"Thermal cycling performance and CMAS corrosion behavior of high-entropy composite thermal barrier coatings","authors":"Yun Xue ,&nbsp;Li Zhao ,&nbsp;Haoxin Zhang ,&nbsp;Yun Ye ,&nbsp;Yulong An","doi":"10.1016/j.surfcoat.2025.132724","DOIUrl":"10.1016/j.surfcoat.2025.132724","url":null,"abstract":"<div><div>A composite thermal barrier material, Y_0.5LECO, was designed by introducing 50 <em>wt</em>% 8YSZ (8 mol% Yttria-Stabilized Zirconia) into high-entropy (La_0.2Nd_0.2Sm_0.2Eu_0.2Gd_0.2)₂Ce₂O₇ (LECO). Then, two TBCs were constructed via atmospheric plasma spraying, including double-ceramic-layer Y_0.5LECO-8YSZ (Y-Y_0.5LECO) and single-ceramic-layer Y_0.5LECO. The thermal cycling performance and CMAS corrosion behavior were investigated. During thermal cycling, the t → m phase transformation of ZrO₂ was detected. Despite this, the phase transformation toughening and ferroelastic toughening effects of 8YSZ effectively impeded crack propagation and provided excellent cracking resistance. Consequently, Y-Y_0.5LECO (58 thermal cycles, 1000 °C) exhibited a significantly improved thermal cycling performance. The free-standing Y_0.5LECO coating also presented good CMAS resistance, where the corrosion depth was only ~55 μm after corrosion at 1300 °C for 10 h. However, after prolonged corrosion, the corrosion product Ca₂RE₈(SiO₄)₆O₂ phase served as an effective barrier, but the ZrO₂ failed to inhibit CMAS ingress. Thus, the incorporation of 8YSZ resulted in a deterioration of CMAS resistance, at which several elongated penetration paths were generated beneath the corrosion layer. Such a compositional approach establishes a basis for the design of advanced TBCs.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132724"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222560","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}

{"title":"Effect of Cr/Zr metal layer on the microstructure and properties of CrN coating deposited by arc ion plating","authors":"Zhendong Zhao ,&nbsp;Yinglin Guan ,&nbsp;Yichuan He ,&nbsp;Yitao Xin ,&nbsp;Yongjun Hu ,&nbsp;Le Huang ,&nbsp;Qian Shi ,&nbsp;Changguang Deng","doi":"10.1016/j.surfcoat.2025.132730","DOIUrl":"10.1016/j.surfcoat.2025.132730","url":null,"abstract":"<div><div>This study utilized first-principles calculations to evaluate the interfacial work of separation (Wsep) in metal/CrN systems, revealing that the Cr(111)/CrN(111) interface exhibits the highest adhesion strength of 0.44 eV/Ų, followed by the Zr(002)/CrN(111) interface with 0.37 eV/Ų. This result is consistent with the Wsep value calculated for the Cr(210) crystal plane. Guided by these theoretical predictions, Cr/CrN and Zr/CrN multilayer coatings were synthesized via arc ion plating to enable systematic comparative analysis. Microstructural characterization demonstrated that Cr/CrN coatings exhibit superior surface integrity, characterized by diminished defect density and lower roughness. Nanoindentation tests confirmed enhanced mechanical properties in Cr/CrN, with hardness reaching 20.9 ± 0.3 GPa, elastic modulus of 342.6 ± 4.9 GPa, and improved plasticity indices. Additionally, Cr/CrN coatings displayed superior bonding strength of 33.6 N. Tribological analysis under varying loads revealed ultralow wear rates for both coatings at 10 N, which were attributed to nanocrystalline grain boundary strengthening and compressive stress effects. However, Cr/CrN demonstrated exceptional wear resistance under medium-load conditions, where the wear mechanism transitioned from adhesive to a combined adhesive-abrasive-oxidative mode. High-temperature oxidation tests further validated Cr/CrN's thermal stability through the formation of a protective Cr₂O₃ layer, in contrast to Zr/CrN's degradation via monoclinic ZrO₂ (m-ZrO₂) oxide formation. The experimental validation of Cr/CrN's superior interfacial compatibility and multifunctional performance aligns with its theoretically predicted high Wsep, thereby establishing a robust computational-experimental framework for the design of high-performance wear-resistant coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132730"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222712","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}

{"title":"Unprecedented results on the high current density-low temperature boriding of hot work tool steels","authors":"J.L. Rosales-Lopez ,&nbsp;M. Olivares-Luna ,&nbsp;L.E. Castillo-Vela ,&nbsp;K.D. Chaparro-Pérez ,&nbsp;I. Campos-Silva","doi":"10.1016/j.surfcoat.2025.132726","DOIUrl":"10.1016/j.surfcoat.2025.132726","url":null,"abstract":"<div><div>This study rigorously examines the potential of Pulsed DC Powder-Pack Boriding (PDCPB) to produce boride layers on AISI H13 steel at significantly reduced temperatures (873 K – 973 K) and short exposure times (1800 s – 3600 s), under high current densities (∼952 mA cm⁻²). Traditional processes for similar results on AISI H13 require temperatures above 1173 K and exposure times exceeding 14,400 s.</div><div>Microstructural and physicochemical analyses (SEM-EDS, XRD) confirm the formation of uniform, dense, dual-phase FeB + Fe₂B layers (8 μm – 17 μm) at 873 K, while preserving the α substrate microstructure without α’ transformation or diffusion zones. This suggest the feasibility of boriding closer to 803 K, representing a significant advancement in surface engineering.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132726"},"PeriodicalIF":6.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160084","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}

{"title":"Cobalt atom incorporation regulates grain structure and thermoelectric properties in Bi₂Te₃ thin films","authors":"Min-Chen Chuang ,&nbsp;Sheng-Chi Chen ,&nbsp;Cheng-Lung Chen ,&nbsp;Wei-Yu Chen ,&nbsp;Shang-Wei Chou ,&nbsp;Hui Sun","doi":"10.1016/j.surfcoat.2025.132714","DOIUrl":"10.1016/j.surfcoat.2025.132714","url":null,"abstract":"<div><div>Cobalt-doped Bi₂Te₃ thin films were fabricated via sustainable manufacturing of the direct current magnetron co-sputtering with Co contents ranging from 0 to 8.2 at.%. Magnetic doping is introduced as a viable strategy to regulate microstructure and transport properties in thermoelectric coatings for use in the renewable energy. The incorporation of cobalt results in grain refinement from ∼16 nm to 5 nm and promotes the in-situ formation of nanoscale CoTe₂ phases, as confirmed by high-resolution TEM. These nanophases suppress grain coarsening and enhance interfacial density, thereby increasing carrier scattering. Electrical measurements reveal that Co doping increases carrier concentration while maintaining the Seebeck coefficient up to 2.5 at.%, a behavior explained by single parabolic band modeling with an effective mass of ∼1.7 mₑ. This suggests that magnetic scattering and band structure stability together enable decoupling of electrical conductivity and thermopower. The optimized film achieves a power factor of 260 μW m⁻¹ K⁻² at 300 K. The as-deposited films exhibit tunable electrical properties and well-defined nanostructures without thermal post-treatment. These findings provide new insights into how magnetic dopants mediate phase formation, defect structures, and transport dynamics in layered thermoelectric systems, and establish a scalable platform for designing multifunctional coatings applicable to energy harvesting, microelectronic integration, and active thermal management.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132714"},"PeriodicalIF":6.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145269635","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}

{"title":"Sealing post-treatments of plasma electrolytic oxidation coatings based on fibrous silica","authors":"Safiya Al Abri ,&nbsp;Tiantian Liao ,&nbsp;Lizhuo Zhang ,&nbsp;Xiangli Zhong ,&nbsp;Aleksey Yerokhin ,&nbsp;Beatriz Mingo","doi":"10.1016/j.surfcoat.2025.132697","DOIUrl":"10.1016/j.surfcoat.2025.132697","url":null,"abstract":"<div><div>This study investigates the hydrothermal sealing of plasma electrolytic oxidation (PEO) coatings on aluminium using fibrous silica (KCC-1) and Ce-modified KCC-1 particles (Ce-KCC-1). The in-situ growth of fibrous silica within the porous oxide layer enables deep penetration and chemical integration, forming a robust barrier against corrosion. This work presents a significantly enhanced sealing strategy for PEO coatings, demonstrating superior corrosion resistance and structural cohesion compared to existing post-treatment methods. The incorporation of cerium retained the fibrous morphology of KCC-1, with a slight reduction in particle size due to cerium ion hydrolysis by urea, which influenced silica condensation. Cerium-rich compounds (CeO₂, Ce₂O₃, and CeCO₃OH) formed during treatment were deposited as nanoparticles and sharp platelets on the silica surface. The Ce-KCC-1 post-treatment delivered substantial barrier enhancement during the initial 72 h of immersion, attributed to particle-induced compaction and cathodic inhibition by cerium ions. Additionally, Ce microstructural modification facilitated Cl⁻ retention near the coating surface, mitigating chloride-induced degradation. Beyond 72 h, a decline in protective performance was observed, likely due to the structural disruption caused by CeCO₃OH platelets. These findings demonstrate a scalable and multifunctional approach to extending the durability of lightweight alloy systems, with potential relevance across advanced corrosion-resistant applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132697"},"PeriodicalIF":6.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120085","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}

{"title":"Effect of bias voltage and heating power on the structural and tribo-mechanical properties of chemically complex TiSiBCN nanocomposites","authors":"Wolfgang Tillmann ,&nbsp;Julia Urbanczyk ,&nbsp;Robin Ratke ,&nbsp;Jonas Kruth ,&nbsp;Alexander Thewes ,&nbsp;Günter Bräuer ,&nbsp;Nelson Filipe Lopes Dias","doi":"10.1016/j.surfcoat.2025.132728","DOIUrl":"10.1016/j.surfcoat.2025.132728","url":null,"abstract":"<div><div>TiSiBCN thin films combine high thermal stability, oxidation resistance, and low friction, making them promising for high-temperature applications. While previous studies focused on the effect of chemical composition on TiSiBCN, it remains unclear how bias voltage and heating power affect the structural and tribo-mechanical properties of TiSiBCN. Therefore, this study investigates the effect of these parameters on the structural and tribo-mechanical behavior of TiSiBCN nanocomposites with different compositions. Thin films were deposited by magnetron sputtering, varying the bias voltage (−100, −150, −200 V) and heating power (2, 5, 8 kW).</div><div>The chemical composition remained largely unchanged with heating power, but a slight reduction in Si content was observed at higher bias in B- and Ti-rich films. x-ray diffraction confirmed polycrystalline structures with TiN, TiC, TiB, and TiB₂ phases coexisting in various amorphous phases. Transmission electron microscopy images revealed nanocomposite structures and changes dependent on the initial phase structure and chemical composition, like crystallite refinement with higher bias voltage or growth, as well as further reorganization with higher deposition temperatures. Increasing bias voltage induces residual stresses while the hardness tends to decrease. With higher heating power, internal stresses are released and the hardness increases up to 41 GPa. Tribological evaluation against AW-6060 aluminum alloy showed that C- and N-rich nanocomposites minimized material transfer and friction, while hard crystalline-rich TiSiBCN increased friction and wear due to oxide adhesions. These findings demonstrate how deposition conditions influence the microstructure and performance of TiSiBCN nanocomposites and support their suitability for aluminum forming applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132728"},"PeriodicalIF":6.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120649","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}

{"title":"Preparation and cyclic oxidation behavior of Pt-modified Ni3Al-based coatings: Effects of Al/Pt content and vacuum annealing time","authors":"Dongliang Xue ,&nbsp;Shuai Li ,&nbsp;Yiming Jiang ,&nbsp;Jiahao Wu ,&nbsp;Caiyun Zhang ,&nbsp;Zebin Bao ,&nbsp;Shenglong Zhu ,&nbsp;Fuhui Wang","doi":"10.1016/j.surfcoat.2025.132725","DOIUrl":"10.1016/j.surfcoat.2025.132725","url":null,"abstract":"<div><div>This work proposes an option for preparing Pt-modified Ni₃Al-based coating and systematically investigates the effects of deposition parameters on microstructural evolution and phase composition. Compared with conventional β-(Ni,Pt)Al coating, the Pt-modified Ni₃Al-based coatings significantly refrain elements from interdiffusion and inhibit precipitation of topologically close-packed phases (TCP). The cyclic oxidation test at 1100 °C demonstrates that the single-phase Pt-modified Ni₃Al coatings possess superior high-temperature performance, attributing to their lower oxidation rate and insignificant oxide scale rumpling extent. Moreover, the formation of orthorhombic Ni₅Al₃ phase has been identified in the Pt-modified Ni₃Al-based coatings when Al content is excessive, which is consistent with the transmission electron microscopy (TEM) analysis. As seldom reported, the detrimental effects of Ni₅Al₃ precipitates on oxidation resistance are particularly discussed. These findings provide informative ideas for strategies optimizing the microstructure of high-performance Ni₃Al-based coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132725"},"PeriodicalIF":6.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160086","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}