Protection of Metals and Physical Chemistry of Surfaces最新文献

{"title":"The Textural and Adsorption Properties of Copper-Containing Catalysts for Carbonyl Group Reduction","authors":"D. A. Prozorov,&nbsp;R. N. Rumyantsev,&nbsp;A. V. Afineevskii,&nbsp;D. V. Smirnov,&nbsp;K. A. Nikitin,&nbsp;T. Yu. Osadchaya,&nbsp;N. E. Gordina","doi":"10.1134/S2070205123701034","DOIUrl":"10.1134/S2070205123701034","url":null,"abstract":"<p>This work studied bulk catalysts for hydrogenation processes of a carbonyl group that have similar compositions and contain copper, zinc, aluminum, and oxygen but were obtained by different methods, such as calcination of a mixture of salts followed by reduction in a hydrogen flow and alkalinization of metal alloys. The effect of the chemical composition and synthesis conditions of such copper-containing catalysts on their surface morphology and textural properties has been studied. The levels of adsorption of hydrogen on the studied catalysts are obtained by combined simultaneous thermal analysis–mass spectrometry. The presence of individual forms of adsorbed hydrogen with different metal–hydrogen bond energies is shown. An explanation for the difference in the adsorption properties relative to hydrogen is provided.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"854 - 859"},"PeriodicalIF":1.1,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138431631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Study of Physicochemical Properties of Mesoporous Carbon Sorbent Modified with 3-Phenylpropane Acid","authors":"A. V. Sedanova,&nbsp;L. G. Pyanova,&nbsp;M. S. Delyagina,&nbsp;N. V. Kornienko,&nbsp;N. N. Leontyeva,&nbsp;S. N. Nesov,&nbsp;A. V. Babenko","doi":"10.1134/S2070205123700983","DOIUrl":"10.1134/S2070205123700983","url":null,"abstract":"<div><div><p><b>Abstract</b>—The adsorption of 3-phenylpropanoic acid on a mesoporous carbon sorbent was studied. The optimal ratio and equilibrium time in the sorbent–phenylpropanoic acid solution system were determined. A method for modifying a carbon sorbent with 3-phenylpropanoic acid has been developed. The possibility of migration (desorption) of the modifier into solutions simulating the environment of the stomach and intestines was investigated. The set of physicochemical research methods—low-temperature nitrogen adsorption, IR, NMR, X-ray photoelectron and Raman spectroscopy, spectrophotometry, the titrimetric method of H.P. Boehm, CHNOS elemental analysis—were used to study the properties of a carbon sorbent before and after modification, as well as after desorption of the deposited 3-phenylpropanoic acid. The synthesized modified samples are promising for use as enterosorbents for treating gastrointestinal diseases.</p></div></div>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"810 - 821"},"PeriodicalIF":1.1,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138431674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Сharacteristics, Mechanical Properties, Wear and Oxidation Resistance of Coatings in the Mo–Y–Zr–Si–B System Obtained on Molybdenum by Magnetron Sputtering in the DCMS and HIPIMS Modes","authors":"Ph. V. Kiryukhantsev-Korneev,&nbsp;F. I. Chudarin,&nbsp;R. A. Vakhrushev,&nbsp;A. D. Sytchenko,&nbsp;M. I. Karpov,&nbsp;P. Feng,&nbsp;E. A. Levashov","doi":"10.1134/S2070205123701095","DOIUrl":"10.1134/S2070205123701095","url":null,"abstract":"<div><div><p><b>Abstract</b>—Mo–(Y, Zr)–Si–B coatings were obtained by direct current magnetron sputtering (DCMS) and high-power impulse magnetron sputtering (HIPIMS) using composite targets of MoSi₂ + 10% MoB and (MoSi₂ + 10% MoB) + 20% ZrB₂, with the Y segments located in their erosion zone with a total area of 5 and 10 cm². The structure and composition of the coatings were studied by scanning and transmission electron microscopy, glow discharge optical emission spectroscopy, and XRD. The hardness, elastic modulus, elastic recovery, adhesive strength, and resistance of the coatings to abrasive wear and cyclic impact loading were determined. The oxidation resistance and thermal stability were estimated by heating the coatings to a maximum temperature of 1000°C in a muffle furnace and in a transmission electron microscope column, respectively. It has been established that the Mo–Si–B coating contains the <i>h</i>-MoSi₂ phase with preferred orientation in the [110] direction and crystallite size of 75 nm. Alloying of Zr and Y coatings, as well as the transition from DCMS to HIPIMS mode, contributed to the suppression of preferential growth of crystallites, increasing their dispersity and the volume fraction of the amorphous phase, which led to an increase in the crack resistance and adhesive strength of the coatings. The HIPIMS method in coating deposition caused an increase in the hardness and elastic modulus by 10%; resistance to cyclical impact, by 60%; and abrasive resistance, by 20%; it also increased oxidation resistance up to 20%. Mo–Y–Zr–Si–B coatings with the optimal composition demonstrated high thermal stability; the main structural component is the hexagonal phase <i>h</i>-MoSi₂; it remained in the temperature range of 20–1000°C and also resulted in a more than ninefold increased oxidation resistance of the Mo substrate at 1000°C.</p></div></div>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"933 - 945"},"PeriodicalIF":1.1,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138431622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of Primary Acts of Ion Reduction and Oxygen Effects Using Various Methods of Gold Nanoparticle Formation, Including Self-Assembly","authors":"K. F. Chernyshova,&nbsp;A. A. Revina","doi":"10.1134/S2070205123701083","DOIUrl":"10.1134/S2070205123701083","url":null,"abstract":"<p>This work presents the results of a study of the physical-chemical properties of gold nanoparticles (NP) prepared in reverse micellar solutions (RMS) using various ion reduction methods, including self-assembly (SA). The spectra of the electron plasmon resonance of the Au NP in the visible region (λ_max ~ 530 nm) and in the UV region of the spectrum (λ_max ~ 200–220 nm) were recorded by UV–Vis spectrophotometry. In the present work, the kinetics of the primary stages of the formation of Au NPs in RMS using various synthesis methods, including SA, has been studied. Based on the results we obtained, an explanation has been provided for the effect of <i>oxygen</i> (<i>aerobic conditions</i>) on the primary stages of the formation of Au NPs using chemical (Chem) synthesis in the presence of the flavonoid quercetin, and radiation-chemical (RadChem) one based on interaction with intermediate particles of water radiolysis. The formation of Au NPs with optical absorption bands in the UV region and the visible region of the spectrum has been corroborated by the results of electron microscopy.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"904 - 910"},"PeriodicalIF":1.1,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138431629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Characterization of Nano TiO2–Hydroquinone-Doped Al Composites and Investigation of Theirs Wear Properties","authors":"Fatma Bilge Emre,&nbsp;Süleyman Köytepe,&nbsp;Erkan Bahçe","doi":"10.1134/S2070205123700867","DOIUrl":"10.1134/S2070205123700867","url":null,"abstract":"<p>In this study, the preparation of nanoporous-TiO₂-doped Al composites with improved mechanical properties and wear resistance was carried out. For this purpose, nanosized TiO₂ structures were first synthesized using the hydrothermal synthesis method. The size distribution, morphology, and chemical structure of the obtained TiO₂ particles were investigated by particle size analyzer, SEM, XRD, and FTIR spectroscopy techniques. At the same time, TiO₂ structures containing hydroquinone (Hq) at different rates (5, 10, and 15%) were prepared in order to ensure homogeneous TiO₂ distribution during the formation of Al matrix composites and to prevent oxidation that may occur during composite casting. TiO₂–Al composite structures were obtained by doping the synthesized pure TiO₂ nanoparticles and TiO₂ nanoparticles containing hydroquinone in different ratios to the Al matrix structure. The obtained composite structures were examined structurally by FTIR and XRD spectroscopy techniques. Then, the thermal properties of the composite structures obtained were examined by TGA analysis. Morphological properties, microstructure, and surface elemental distribution of the composite structure were investigated by SEM and EDX techniques. The abrasion properties of the obtained TiO₂ added Al composite structures were investigated using SiC papers (200–400–600 and 800–1200 mesh). As a result, it was observed that the doped TiO₂ nanoparticles reduced surface deformation during abrasion.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"911 - 921"},"PeriodicalIF":1.1,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135933853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Microstructural and Chemical Composition Changes in TGO and BC of HALT Pt–Al–APS YSZ Coating After Cyclic Oxidation","authors":"Arman Rabieifar,&nbsp;M. Reza Afshar,&nbsp;Hamidreza Najafi","doi":"10.1134/S2070205123700892","DOIUrl":"10.1134/S2070205123700892","url":null,"abstract":"<p>In this research, the microstructural and chemical composition changes of thermally grown oxide (TGO) and bond coat (BC) layer were investigated after cyclic oxidation of Pt–Al–YSZ coating at 950°C. First, the Pt–Al layer was coated by the high-activity-low-temperature (HALT) method on the Rene-80 substrate, and then the YSZ top coat (TC) layer was coated by the atmospheric plasma spraying (APS) method on the HALT Pt–Al layer. Cyclic oxidation was performed in ambient air for 50 cycles. After cyclic oxidation, the Pt–Al layer was divided into upper and lower regions. Upward diffusion of Al from the Pt-Al layer to TGO led to the transformation of β to γ′ and γ in the lower region, rumpling in the upper region, and internal oxidation at the interface of the upper and lower region of the Pt–Al layer. The TGO layer included mixed oxides of NiO, Cr₂O₃, and NiCr₂O₄, along with discontinuous Al₂O₃ veins. Depletion of Al from Pt–Al led to the ratcheting of the TGO, the formation of NiAl₂O₄ at the Pt–Al/TGO interface, and, subsequently, the nucleation of lateral microcracks in the upper region of the Pt–Al. A mechanism for changing the chemical composition of TGO after cyclic oxidation was proposed.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"946 - 955"},"PeriodicalIF":1.1,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135933860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrosion Inhibition and Adsorption Behavior of Musa Basjoo Siebold Leaves Extract on Mild Steel in H3PO4 Solution: Experimental and Theoretical Studies","authors":"Chen Zhao,&nbsp;Bilan Lin,&nbsp;Xinxin Zhou,&nbsp;Jiahao Zhu,&nbsp;Tianhu Duan,&nbsp;Yuye Xu","doi":"10.1134/S2070205123700934","DOIUrl":"10.1134/S2070205123700934","url":null,"abstract":"<p><i>Musa basjoo Siebold</i> leaves extract (MBSLE) was utilized as green corrosion inhibitor for mild steel in 1 M H₃PO₄ solution. The inhibition behavior was studied through electrochemical tests. The chemical structure of extract was investigated by FTIR and UV–Vis spectra. The element compositions in adsorption film on the surface of mild steel were analyzed by XPS technique. The corrosion morphology of mild steel was observed. The adsorption mechanism of typical components in extract were theoretically calculated by DFT and MD. The results showed that the inhibition efficiency of MBSLE on mild steel increased with extract concentration and MBSLE acted as a mixed corrosion inhibitor. MBSLE contained carbonyl, carboxyl, hydroxyl, heterocyclic ring, benzene ring and other polar groups, and successfully adsorbed on mild steel to form the protective film. DFT simulations proved that the active components possessed the synergistic adsorption ability to donate and receive electrons. MD calculations demonstrated the parallel adsorption of typical ingredients on steel surface, the presence of physical adsorption and the inhibition mechanism of geometric coverage effect. Irenolone in MBSLE with more aromatic rings and polar groups shows an excellent corrosion inhibition performance.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"1010 - 1027"},"PeriodicalIF":1.1,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135934049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Di- and Tricationic Surfactants and Comparison of Their Activity on Oxidation of Metal in HCl Media","authors":"Serkan Öztürk,&nbsp;Zafer Gültekin,&nbsp;Nuray Altınölçek Gültekin,&nbsp;Gülşen Akgül,&nbsp;Mürsel Alper","doi":"10.1134/S2070205123700958","DOIUrl":"10.1134/S2070205123700958","url":null,"abstract":"<p>In this study, two surfactants with the same long chain were synthesized. One shows dicationic and the other tricationic properties. Various spectroscopic methods such as FT-IR, ¹H NMR and ¹³C NMR were used to confirm the structures of the synthesized surfactants. The inhibition activities of two synthesized surfactants against mild steel corrosion in 1.0 M HCl solution were determined using the weight loss method. The 24-h corrosion tests on metal coupons immersed in acidic solutions were carried out using different inhibitor concentrations and similar and successful inhibition was obtained for both surfactants. Current density was determined by potentiodynamic polarization at a single inhibitor concentration to compare with the inhibition efficiency results obtained by decrease in weight method. Based on the current density, the inhibition efficiencies of the surfactants were calculated by Tafel extrapolation method. The inhibition efficiency results obtained by both weight loss and Tafel method were close and consistent. According to both methods, the corrosion inhibition of dicationic surfactant was slightly better than that of tricationic surfactant. By determining the critical micelle concentration for the two surfactants, some physicochemical parameters such as surface tensions and free energy of micelle formation at this concentration were calculated and correlated with their corrosion inhibitory activity. Scanning electron microscopy was used to ascertain the surface roughness conditions of metals submerged in an acidic solution, thus visually proving that surfactants protect the metal surface from corrosion.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"998 - 1009"},"PeriodicalIF":1.1,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135933868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Morphologies and Wetting Properties of CK40 and AA2024 Surfaces Produced by Chemical Etching and Stearic Acid Modification","authors":"Nilhan Urkmez Taskin,&nbsp;Cigdem Ovaci Beji,&nbsp;Fatih Ordu,&nbsp;Vedat Taskin","doi":"10.1134/S2070205123700880","DOIUrl":"10.1134/S2070205123700880","url":null,"abstract":"<p>By applying surface modification after chemical etching, superhydrophobic aluminum and steel surfaces were obtained. With different etching times, from all surfaces, different surface roughness values (Ra) were obtained. The effect of Ra’s on surface contact angles (CA) was determined by applying surface modification with stearic acid (STA) to all surfaces under the same conditions. With increased etching time, the surface roughness of both aluminum and steel has increased. Thus, in the current study, wettability seems to be affected only by the changes in surface roughness values. Although the etching reactive and the modification procedure are being same, higher contact angles were obtained on steel surfaces in shorter etching durations compared to aluminum surfaces. The maximum contact angles measured were 125.35 ± 8.32° on aluminum surfaces and 164.68 ± 3.62° on steel surfaces. With the current etching method, the minimum etching times required to reach the hydrophobic/superhydrophobic structure for the CK40 and the AA2024 samples were determined. Furthermore, optimum etching times under 10 min for CK40 and under 30 min for AA2024 were determined achieve the maximum contact angle.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"922 - 932"},"PeriodicalIF":1.1,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135934791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Equal Channel Angular Extrusion and Heat Treatment on High Temperature Oxidation Resistance of Ti555 Alloy","authors":"Siyuan Yin,&nbsp;Qingshan Zhou,&nbsp;Yishui Xiao,&nbsp;Lin Huang,&nbsp;Xiaojing Xu","doi":"10.1134/S2070205123700910","DOIUrl":"10.1134/S2070205123700910","url":null,"abstract":"<p>In this paper, Ti–5.4Al–4.1Mo–5V–3Cr–1Zr was studied by the secondary processing method of equal channel angular extrusion and heat treatment. Different heat treatment processes were adopted, including 820/880°C solution-580°C aging, 820/880°C solution-ECAP-580°Caging, ECAP-820/880°C solid solution –580°C aging. The oxidation characteristics of thealloy were evaluated by scanning electron microscopy (SEM), optical microscopy (OM) and X-ray diffraction (XRD). The overall anti-oxidation performance is solid solution-ECAP-aging &gt; ECAP-solid solution-aging &gt; solid solution-aging.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"59 5","pages":"964 - 976"},"PeriodicalIF":1.1,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135933869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}