Journal of Alloys and Compounds最新文献

{"title":"Crystal growth, ferromagnetism and electronic structure of van der Waals NbCo1.1Te2","authors":"Yan Feng, Zhengming Shang, Junjie Wu, Haige Tan, Changlong Wang, Lizhen Huang, Ruimin Li, Shengtao Cui, Yi Liu, Yalin Lu, Haiou Li, Bin Xiang","doi":"10.1016/j.jallcom.2024.177844","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177844","url":null,"abstract":"Recent advances in the synthesis of intercalated compounds have opened new avenues for exploring novel magnetic properties. This work focuses on the synthesis of high-quality single crystals of NbCo_1.1Te₂, achieved through a meticulously optimized chemical vapor transport method that facilitates effective cobalt intercalation into the van der Waals gaps of NbCoTe₂. Comprehensive characterizations, including magnetic susceptibility, angle-resolved photoemission spectroscopy (ARPES), and magnetoresistance measurements, revealed pronounced room-temperature ferromagnetism and significant magnetic anisotropy, along with a confirmed metallic nature of NbCo_1.1Te₂. These findings underscore the transformative effects of cobalt intercalation on the physical properties of NbCo_1.1Te₂, demonstrating its promising potential for advanced electronic and spintronic applications, and laying the groundwork for future research on related materials.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"27 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742635","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 of pCL-20/PTFE-Al Composites for Sensibility Reduction and Combustion Improvement","authors":"Lanting Yang, Zhaokang Chen, Lihao Wang, Zhenwei Zhang, Ruihao Wang, Changping Guo","doi":"10.1016/j.jallcom.2024.177839","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177839","url":null,"abstract":"The high sensitivity of high explosive hexanitrohexaazaisowurtzitane (CL-20) limits its applicability, and the performance optimization brought by the synergistic effect between nanothermite and CL-20 is expected to expand its application prospects. In this study, polydopamine (PDA) was introduced to modify CL-20 (denoted as pCL-20), and a quasi-core/shell pCL-20/polytetrafluoroethylene-aluminum (pCL-20/PTFE-Al) composite was successfully prepared by ultrasonic-assisted composite method. The performance characterization results demonstrate that the composite exhibits significantly better decomposition heat release than the mixed sample, a reduction in combustion time from 408 ms to 268 ms, a more stable combustion flame, and more focused energy release. At the same time, the comparison of composite combustion with different condition variables reflects the combustion advantages of the selected proportional conditions in this study. The characteristic drop height (H₅₀) increased from 24.05<!-- --> <!-- -->cm to 42.15<!-- --> <!-- -->cm, the explosive percentage of friction sensitivity reduced from 100% to 70%, and the sensitivity of the composite sample decreased significantly when compared to the raw CL-20. It improves the combustion performance while reducing the sensitivity, thereby enhancing the application potential and providing a reference for the high-energy desensitization of energetic materials.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"72 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742637","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":"Microwave dielectric properties of high-entropy [(Mg1/2Zn1/2)0.4+x(Ni1/3Co1/3Mn1/3)0.6-x]2TiO4 ceramics","authors":"Pingwen Xiang, Yuanming Lai, Linqiao Zhang, Feng Liu, Yuanxun Li, Jiao Han, Yiming Zeng, Qian Liu, Chongsheng Wu","doi":"10.1016/j.jallcom.2024.177833","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177833","url":null,"abstract":"In this study, a series of high-entropy [(Mg_1/2Zn_1/2)_{0.4+<em>x</em>}(Ni_1/3Co_1/3Mn_1/3)_{0.6-<em>x</em>}]₂TiO₄ (expressed as MZNCMT) (0.0 ≤ <em>x</em> ≤ 0.6) ceramics were prepared via the solid-state reaction, the high-entropy ceramics exhibited inverse spinel structure. The phase compositions, microstructures, and microwave dielectric properties were investigated. The results of x-ray diffraction (XRD) showed that a principal phase of [(Mg_1/2Zn_1/2)_{0.4+<em>x</em>}(Ni_1/3Co_1/3Mn_1/3)_{0.6-<em>x</em>}]₂TiO₄ ceramics, whereas the second phase of (Mg, Zn, Ni, Co, Mn)TiO₃ appeared when <em>x</em> ≤ 0.4. With the increase of <em>x</em> value, the relative density of the sample decreased, the unit cell volume first decreased and then kept expanding. This phenomenon could be attributed to the reduction of (Ni_1/3Co_1/3Mn_1/3)²⁺. Good microwave dielectric properties were achieved: <em>x</em> = 0.0 (<em>ε</em>_r = 17.17, Qf = 16500<!-- --> <!-- -->GHz, <em>τ</em>_<em>f</em> = -33 ppm/℃), <em>x</em> = 0.5 (<em>ε</em>_r = 16.30, Qf = 53900<!-- --> <!-- -->GHz, <em>τ</em>_<em>f</em> = -30 ppm/℃) and <em>x</em> = 0.6 (<em>ε</em>_r = 16.26, Qf =110800<!-- --> <!-- -->GHz, <em>τ</em>_<em>f</em> = -39 ppm/℃), well temperature coefficient of resonance frequency (<em>τ</em>_<em>f</em>) = -30 ppm/℃ for the sample at <em>x</em> = 0.5, and the highest quality factor (Qf) = 110800<!-- --> <!-- -->GHz for the sample at <em>x</em> = 0.6. The <em>ε</em>_r value of MZNCMT ceramics is consistent with the theoretical dielectric constant (<em>ε</em>_theo), indicating that <em>ε</em>_r is mainly based on ion polarization. The Qf value were highly related to the packing fraction. Furthermore, the <em>τ</em>_<em>f</em> value depended on the bond strength of A-site.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"22 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742552","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 ultrasonic surface rolling extrusion on microstructural evolution and wear resistance of laser-clad CoCrFeMnNi high-entropy alloy with low stacking fault energy","authors":"Hao Liu, Dali Li, Ruitong Wang, Peijian Chen, Rongtao Zhu, Yanfei Wang, Xinhua Liu","doi":"10.1016/j.jallcom.2024.177832","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177832","url":null,"abstract":"Ultrasonic surface rolling extrusion (USRE) was employed to strengthen face-centered cubic (FCC) phase CoCrFeMnNi high-entropy alloy (HEA) coatings prepared by laser cladding. The influence of USRE's static load on the microstructure, mechanical properties, and wear resistance of the coatings was examined to elucidate the grain refinement mechanism. The findings indicate that USRE preserves the phase composition of the CoCrFeMnNi HEA coatings. After USRE at loads of 100<!-- --> <!-- -->N, 200<!-- --> <!-- -->N, and 300<!-- --> <!-- -->N, the measured thicknesses of the severe plastic deformation layers are 2.51 μm, 3.03 μm, and 3.45 μm, respectively. The process triggers dislocation multiplication, which accumulates at the boundaries of Mn-rich regions, forming dislocation cells and evolving into subgrains, thereby refining the grain structure under severe plastic deformation. Statistical analysis reveals that the dislocation density within the grains is 7×10^{14<!-- -->}m⁻², while at the grain boundaries, the dislocation density is 4×10^{15<!-- -->}m⁻². The average grain size has been refined from 97.7 μm to 34.7 μm. Both microhardness and wear resistance escalate with increased static load, with the maximum microhardness of 347 HV and the minimum wear rate of 2.6×10^-5 mm³·N^-1·m^-1 achieved at a 300<!-- --> <!-- -->N static load. This hardness enhancement is due to the combined effects of grain refinement, dislocation strengthening, and sub-grain formation. The wear mechanisms for the USRE-treated CoCrFeMnNi HEA coatings include adhesive wear, abrasive wear, and oxidative wear. While adhesion and abrasion diminish with higher static pressures, oxidative wear intensifies.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"196 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742657","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":"Enhanced Photocatalytic and Antibacterial Properties of Yttrium-Doped Tungsten Oxide (WO₃) Nanorods Synthesized via Hydrothermal Method for Environmental Remediation","authors":"Mohd. Shkir, I.M. Ashraf, Fatma B.M. Ahmed, Nazim Hasan","doi":"10.1016/j.jallcom.2024.177857","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177857","url":null,"abstract":"This study investigates the synthesis, characterization, and performance of Yttrium (1-7<!-- --> <!-- -->wt.%)-doped WO₃ photocatalysts for simultaneous organic dye degradation and bacterial inactivation. Physicochemical characterization was conducted using XRD, Raman, FESEM, TEM, and UV-DRS analysis. The 5% Y-doped WO₃ NRs exhibited optimal properties, including a reduced bandgap (2.65<!-- --> <!-- -->eV) and decreased crystallite size (36<!-- --> <!-- -->nm), compared to undoped WO₃. The photocatalytic activity was examined by monitoring the degradation of Rhodamine B (RhB) and Methylene blue (MB) under light irradiation. The 5% Y-WO₃ NRs demonstrated superior performance, achieving 92% RhB and 89% MB degradation within 120<!-- --> <!-- -->minutes. Analysis revealed pseudo-first-order chemical kinetic was observed with degradation rates of 0.02243<!-- --> <!-- -->min⁻¹ for RhB and 0.01899<!-- --> <!-- -->min⁻¹ for MB, representing a 2.5-fold increase compared to pure WO₃. The scavengers test confirms that (•OH) radicals play a crucial role in the photodegradation activity. The enhanced photocatalytic activity of 5% Y-WO₃ NRs is attributed to improved charge separation, reduced electron-hole recombination, and enhanced light absorption due to Y³⁺ doping. Further, the antibacterial activity against <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>) was evaluated through the disc diffusion method, and the minimum inhibitory concentration (MIC) was determined. The 5% Y-doped WO₃ NRs exhibited significant antibacterial efficacy, with 16<!-- --> <!-- -->mm and 15<!-- --> <!-- -->mm inhibition zones for <em>E. coli</em> and <em>S. aureus</em>, respectively, and MIC values of 100<!-- --> <!-- -->μg/mL for both strains. This study demonstrates the potential of Y-doped WO₃ NRs as a multifunctional photocatalyst for simultaneous environmental remediation and disinfection applications, offering a sustainable solution to water treatment challenges. The Y-doped WO₃ nanorods offer the potential for optimization and scaling in applications like wastewater treatment, air purification, and filtration membranes for environmental remediation.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"3 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742752","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":"Interface engineering of Ni3S2@NiFe-LDH core-shell heterostructure to achieve energy-saving hydrogen production","authors":"Yun Chen, Yuewen Wu, Mingpeng Chen, Huachuan Sun, Guohao Na, Dequan Li, Guoyang Qiu, Tong Zhou, Xinru Zhao, Zhishi Qiu, Yuxiao Zhang, Yumin Zhang, Jin Zhang, Feng Liu, Hao Cui, Qingjie Lu, Qingju Liu","doi":"10.1016/j.jallcom.2024.177855","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177855","url":null,"abstract":"Developing highly active and cost-effective catalysts for oxygen evolution reaction (OER) and urea oxidation reaction (UOR) is crucial to accelerate the scale-up of hydrogen production. However, their potentials in widespread use have been locked owing to the sluggish reaction kinetics. Herein, we present a unique three-dimensional heterostructure, in which the self-supported Ni₃S₂ nanorods are wrapped by ultrathin nickel-iron layered double hydroxide nanosheets on nickel foam (Ni₃S₂@NiFe-LDH/NF). Benefiting from the uniform core-shell architecture and the modulated electronic structure, Ni₃S₂@NiFe-LDH/NF demonstrates superior activities for both OER and UOR. The electrode manifests an ultralow overpotential of 300<!-- --> <!-- -->mV is required for OER to attain 100<!-- --> <!-- -->mA<!-- --> <!-- -->cm^-2 and operates stably for 200<!-- --> <!-- -->h at 100<!-- --> <!-- -->mA<!-- --> <!-- -->cm^-2. Impressively, the UOR and overall water-urea electrolysis solely require 1.38<!-- --> <!-- -->V vs. RHE and 1.43<!-- --> <!-- -->V to supply 100<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻², greatly reducing the overall energy consumption in 1.0<!-- --> <!-- -->M KOH with a 0.33<!-- --> <!-- -->M urea. The in-situ Raman characterization results show that Ni₃S₂@NiFe-LDH undergoes surface reconstruction into crystalline γ-Ni(Fe)OOH during OER, while it transforms into amorphous <em>a</em>-Ni(Fe)OOH during UOR. This work demonstrates an effective interfacial engineering strategy to develop Ni-based catalysts, enabling energy-saving H₂ production by efficient OER and UOR.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742544","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":"Pressure-tunable superconductivity on cage-like compound Y5Rh6Sn18","authors":"Chao Xiong, Cuiying Pei, Qi Wang, Yi Zhao, Yuyang Jiang, Changhua Li, Weizheng Cao, Lili Zhang, Juefei Wu, Yanpeng Qi","doi":"10.1016/j.jallcom.2024.177846","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177846","url":null,"abstract":"In this work, we report the pressure-dependent evolution of superconductivity in cage-like compound Y₅Rh₆Sn₁₈ by combining electrical transport measurements, synchrotron x-ray diffraction (XRD) and theoretical computation. The application of external pressure leads to the enhancement of metallic nature in Y₅Rh₆Sn₁₈. There is a noted pressure-tunable superconducting temperature (<em>T</em>_c), which climbs to 3.70<!-- --> <!-- -->K at 7.4<!-- --> <!-- -->GPa, and then reverses to 2.37<!-- --> <!-- -->K at the higher pressure of 30.6<!-- --> <!-- -->GPa. High-pressure XRD analysis confirm the robustness of Y₅Rh₆Sn₁₈, which exhibits stability without transitioning into other structural phases up to approximately 30<!-- --> <!-- -->GPa. The <em>ab initio</em> calculations show a significant contribution of Sn <em>s</em> and <em>p</em> electrons as well as Rh and Y <em>d</em> electrons to the total density of states (DOS) near the Fermi level, which supports the multi-band superconductivity of this compound. The enhancement of <em>T</em>_c in Y₅Rh₆Sn₁₈ could be explained by the strengthening of Sn-Sn bonds and the redistribution of Sn atoms in partial density of states (PDOS).","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"14 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742636","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":"Ultra-low εr in LiAlSiO4 microwave ceramics with Li excess","authors":"Huiying Fan, Yun Zhang, Shihua Ding","doi":"10.1016/j.jallcom.2024.177848","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177848","url":null,"abstract":"Li_{(1+<em>x</em>)}AlSiO₄ ceramics were synthesized using the conventional solid-state reaction method. X-ray diffraction analysis indicated that they crystallized in single-phase hexagonal structure. Li loss was studied using the thermogravimetric-differential scanning calorimetry (TG-DSC). Appropriate excess Li resulted in sintering temperature reduction from 1325 ℃ to 1225 ℃. The ultra-low dielectric constant (<em>ε</em>_<em>r</em>) was influenced by the polarizability per unit volume. Theoretical calculations manifested that enhancing the packing fraction suppressed lattice vibrations, resulting in a significant increase in the quality factor (<em>Q×f</em>). Compared with the pure phase samples, adding Li ions optimized the thermal stability of the ceramics. Specifically, Li_1.02AlSiO₄ demonstrated optimal microwave dielectric properties with <em>ε</em>_<em>r</em>=4.13, <em>Q×f</em>=45,387<!-- --> <!-- -->GHz and <em>τ</em>_<em>f</em>=-35.54 ppm/°C, making it a spacious application prospect in the field of 6<!-- --> <!-- -->G communication.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"46 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742638","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 microstructure evolution on the corrosion behavior of extrusion-shearing Mg-3Zn-XCa-0.6Zr alloys","authors":"Yi Li, Feng Wang, Xudong Du, Pingli Mao, Le Zhou, Ziqi Wei, Jinwei Li","doi":"10.1016/j.jallcom.2024.177838","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177838","url":null,"abstract":"In order to promote the application of new biomedical materials Mg-Zn-Ca-Zr alloy, the Mg-3Zn-xCa-0.6Zr (x = 0.6, 1.2, 1.8<!-- --> <!-- -->wt.%) alloys were fabricated by an extrusion shearing (ES) process. The effect of secondary phase precipitation, grain size and texture on the corrosion resistance of Mg-3Zn-xCa-0.6Zr (wt.%) in Hank's solution were studied using electrochemical, immersion and electron back-scattering diffraction (EBSD) tests, and the corrosion mechanism of ES alloys was discussed. With increasing the addition of Ca element, the grain size of alloys first decreased and then increased, and the constitution of second phase was transformed from MgZn and Ca₂Mg₆Zn₃ phases to Mg₂Ca and Ca₂Mg₆Zn₃ phases, the texture changed from a bimodal texture intensity with stronger basal texture to a DRX texture intensity with a weaker texture. Mg-3Zn-0.6Ca-0.6Zr alloy showed the lowest corrosion rate of ~0.3140 ± 0.0642<!-- --> <!-- -->mm/y. The excellent corrosion resistance of Mg-3Zn-0.6Ca-0.6Zr alloy could be attributed to the High-potential dispersion distribution of MgZn and Ca₂Mg₆Zn₃ phases and the strong basal texture. As well as more dense corrosion product films formed after alloying, effectively hindering local corrosion. In contrast, corrosion product films formed by the fine grain structure of Mg-3Zn-1.2Ca-0.6Zr alloy were not sufficient to resist the galvanic coupling corrosion between the Mg₂Ca phase and the Ca₂Mg₆Zn₃ phase, which caused the decreasing of its corrosion resistance.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"19 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742554","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 Al and Zr alloying on the oxidation behaviors of Cr in high temperature oxygen environment","authors":"Ke Zhang, Jun Xie, Jinhua Liu, Bing Yao, Chaowen Zhu, Haibing Guo, Xiaosong Zhou, Wenzeng Bing, Xiaochun Han","doi":"10.1016/j.jallcom.2024.177768","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177768","url":null,"abstract":"A series of CrAl and CrAlZr alloy blocks with different Cr/Al ratios were prepared by powder metallurgy method. The alloys were oxidized at 800℃ for 30<!-- --> <!-- -->hours. Results showed that a compact oxide layer was formed on the surface of CrAl alloy, showing good oxidation resistance. However, the introduction of Zr act as a fast diffusion path for oxygen, where the underlying alloy was oxidized seriously. The experiment has demonstrated that the formation of ZrO₂ undermines the completeness of the compact Cr₂O₃ and Al₂O₃ oxide layer, which is the dominate factor for the failure of the CrAl alloy.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"8 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142735795","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}