Inorganic Materials最新文献_第7页

Effect of the Pore Structure of Glass on the Formation of Birefringent Regions under the Effect of Femtosecond Laser Pulses 飞秒激光脉冲作用下玻璃孔结构对双折射区形成的影响

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168525700104

S. S. Fedotov, Yu. V. Mikhailov, A. S. Lipatiev, R. R. Saifutyarov, T. O. Lipatieva, P. I. Ivanov, I. S. Glebov, V. N. Sigaev

{"title":"Effect of the Pore Structure of Glass on the Formation of Birefringent Regions under the Effect of Femtosecond Laser Pulses","authors":"S. S. Fedotov, Yu. V. Mikhailov, A. S. Lipatiev, R. R. Saifutyarov, T. O. Lipatieva, P. I. Ivanov, I. S. Glebov, V. N. Sigaev","doi":"10.1134/S0020168525700104","DOIUrl":"10.1134/S0020168525700104","url":null,"abstract":"Nanoporous glass is a promising material for application in integrated optics and archival optical storage. Femtosecond laser pulses incident on porous glass can produce microstructures exhibiting form birefringence whose retardance and slow axis orientation depend on writing conditions. In this work, nanoporous glass was heat-treated at temperatures from 700 to 775°C to obtain samples differing in pore size and specific pore volume with the aim of further laser modification of their structure. The results demonstrate that, as the heat treatment temperature is raised, the retardance decreases and the range of femtosecond laser pulse energies where birefringent microregions can be produced narrows down. Analysis of the retardance and pore structure parameters has made it possible to demonstrate a critical effect of specific pore volume on the feasibility of local form birefringence writing. We have proposed heat treatment conditions that ensure protection of porous glass from the influence of adsorption of contaminants from the ambient atmosphere and allow the possibility of producing birefringent structures to be retained, which will extend the application area of nanoporous glass structured by a femtosecond laser beam.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 11","pages":"1356 - 1361"},"PeriodicalIF":0.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645632","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}

引用次数: 0

Structure, Oxidation Resistance, and Corrosion and Tribological Characteristics of Coatings Produced by Electrospark Deposition of Ni and Al Powders on Steel 35 35钢表面电火花沉积镍和铝粉末涂层的结构、抗氧化性、腐蚀和摩擦学特性

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168525700062

A. A. Burkov, M. A. Kulik

引用次数: 0

Crystal Growth of a Pb1−xScxF2+x Superionic Conductor and Investigation of the Interrelation between Its Thermal and Electrical Conductivities Pb1−xScxF2+x超离子导体的晶体生长及其热导率和电导率关系的研究

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168524701371

I. I. Buchinskaya, P. A. Popov, N. I. Sorokin

{"title":"Crystal Growth of a Pb1−xScxF2+x Superionic Conductor and Investigation of the Interrelation between Its Thermal and Electrical Conductivities","authors":"I. I. Buchinskaya, P. A. Popov, N. I. Sorokin","doi":"10.1134/S0020168524701371","DOIUrl":"10.1134/S0020168524701371","url":null,"abstract":"A single crystal of a Pb1−xScxF2+x heterovalent solid solution with x = 0.1 (nominal composition) has been grown by vertical directional solidification (Bridgman technique), its elemental and phase compositions and crystallographic parameters have been determined, and the interrelation between its thermal and electrical conductivities has been analyzed. The composition of the solid solution has been found to vary from x = 0.08 in the bottom (cone) of the crystal to x = 0.095 in its top. The Pb1−xScxF2+x crystal has been shown to have low thermal conductivity (k = 0.7 W/(m K) at 300 K), with “glass-like” behavior of thermal transport, atypical of the crystalline state, in combination with high fluoride ion electrical conductivity (σdc = 0.012 S/m at 293 K) and relatively low activation enthalpy for electrical conduction (ΔHσ = 0.378 ± 0.005 eV). The observed behavior of the thermal and electrical conductivities of the Pb1−xScxF2+x solid solution is due to structural disorder in the fluorine sublattice—which persists at room temperature—as a result of heterovalent substitutions of Sc3+ for Pb2+ cations. The thermal and electrical conductivities of single crystals of Pb1−xScxF2+x and Pb1−xCdxF2 two-component solid solutions (CaF2 structure) are compared to those of the β-PbF2 (CaF2 structure) and ScF3 (ReO3 structure) single-component fluorides.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 9","pages":"1117 - 1125"},"PeriodicalIF":0.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645404","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}

引用次数: 0

Effect of Doping with Praseodymium on the Crystal Structure and Optical Absorption Edge of the TlGaS2 Compound 镨掺杂对TlGaS2化合物晶体结构和光学吸收边的影响

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168525700128

P. G. Ismailova, N. Z. Gasanov, A. A. Gajieva, K. M. Guseinova

引用次数: 0

Vapor–Liquid Equilibrium in the Ni(PF3)4–Hydrocarbon C5–C8 and Chloroalkane CH4–nCln (n = 2–4) System Ni(PF3)4 -碳氢化合物C5-C8和氯烷烃CH4-nCln （n = 2-4）体系的气液平衡

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168524701607

D. M. Zimina, O. Yu. Troshin, A. Yu. Sozin

引用次数: 0

Europium-Containing Luminescent Composites Based on Lead(II)-Modified Poly(methylmethacrylate) 基于铅（II）改性聚甲基丙烯酸甲酯的含铕发光复合材料

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168524701334

V. P. Smagin, P. M. Kotel’nikova

{"title":"Europium-Containing Luminescent Composites Based on Lead(II)-Modified Poly(methylmethacrylate)","authors":"V. P. Smagin, P. M. Kotel’nikova","doi":"10.1134/S0020168524701334","DOIUrl":"10.1134/S0020168524701334","url":null,"abstract":"Composites based on poly(methylmethacrylate) (PMMA) and lead and europium salts, with the compositions PMMA/Pb(CF3COO)2 and PMMA/Pb(CF3COO)2,Eu(CF3COO)3, have been prepared by curing methylmethacrylate (MMA) based solutions via thermal radical block polymerization of MMA. The refractive index of MMA + Pb(CF3COO)2 solutions and the density of the PMMA/Pb(CF3COO)2 polymer composites have been shown to increase linearly as the Pb salt concentration increases to 83 wt % (40 wt % elemental Pb). The optical transmission of the composites at wavelengths above 450 nm and the highest lead and europium concentrations reaches 90% at sample thicknesses of up to 5 mm. The lead equivalent at a Pb(II) concentration of 40 wt % is 0.010. Photoluminescence in the PMMA/Pb(CF3COO)2,Eu(CF3COO)3 composites is due to Eu3+ electronic transitions from the 5D0 metastable electron energy level to the 7Fj sublevels of the ground level. We have demonstrated the influence of lead(II) and europium(III) on the properties of the matrix and the influence of the matrix and Pb(II) on absorption and luminescence spectra of europium(III).","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 9","pages":"1152 - 1160"},"PeriodicalIF":0.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645463","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}

引用次数: 0

Thermochemical Synthesis of Molybdenum Carbide on the Basis of the (NH4)6Mo7O24–NH4NO3–C6H12N4 System 基于（NH4） 6mo7024 - nh4no3 - c6h12n4体系的热化学合成碳化钼

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168524701528

K. B. Podbolotov, Yu. A. Egorova, L. V. Dogotar’, S. V. Vasilevich, A. N. Asadchii

{"title":"Thermochemical Synthesis of Molybdenum Carbide on the Basis of the (NH4)6Mo7O24–NH4NO3–C6H12N4 System","authors":"K. B. Podbolotov, Yu. A. Egorova, L. V. Dogotar’, S. V. Vasilevich, A. N. Asadchii","doi":"10.1134/S0020168524701528","DOIUrl":"10.1134/S0020168524701528","url":null,"abstract":"Data on the thermochemical synthesis of molybdenum carbide on the basis of the (NH4)6Mo7O24–NH4NO3–C6H12N4 system at different component ratios have been reported. Thermodynamic computations have been performed to establish composition regions for probable exothermic reactions to produce molybdenum carbide: 10–20 moles of ammonium nitrate per 1 mole of ammonium molybdate and the ratio of reducing agent to oxidizing agent (φ) equal to 1.5–4.0. It has been found that the reaction in ammonium molybdate–ammonium nitrate–urotropin system includes several stages, the main exothermic reaction is observed after temperature of 120–180°C is reached. Molybdenum carbide forms at φ ≥ 6.5 after thermal treatment at 1000°C under inert atmosphere. The reaction leads to fine crystalline structure of particles with size of 100–200 nm. The obtained materials based on molybdenum carbide show catalytic activity in the conversion of products of incomplete combustion of biofuel (pyrolysis resins). Addition of the obtained materials to pyrolysis resin in 1/10 ratio enhances its conversion (rate parameter increases by 2–10 times), reduces average process temperature by 50–100°C, and decreases activation energy from 82 to 52–65 kJ/mol.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 10","pages":"1205 - 1215"},"PeriodicalIF":0.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645485","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}

引用次数: 0

Solid-Phase Synthesis and Structural Features of Compound Cu3NaS2 化合物Cu3NaS2的固相合成及其结构特征

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-18 DOI: 10.1134/S0020168524701504

R. F. Al’mukhametov, A. D. Davletshina, V. V. Astanin, B. M. Akhmetgaliev

引用次数: 0

Synthesis of One-Dimensional Molybdenum Trioxide Structures and Influence of Aqueous Sucrose Solution on Hydrothermal Treatment of the Structures 一维三氧化钼结构的合成及蔗糖水溶液对结构水热处理的影响

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-13 DOI: 10.1134/S0020168524701322

T. M. Zima, N. F. Uvarov

引用次数: 0

Self-Propagating High-Temperature Synthesis Compaction of Titanium Nickelide: Effect of Oxygen and Hydrogen Impurities on the Structure and Properties of the Alloys 自传播高温合成压实镍化钛：氧和氢杂质对合金结构和性能的影响

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-13 DOI: 10.1134/S0020168524701267

Yu. V. Bogatov, V. A. Shcherbakov, D. Yu. Kovalev, N. P. Cherezov, T. V. Barinova, O. D. Boyarchenko, M. I. Alymov

{"title":"Self-Propagating High-Temperature Synthesis Compaction of Titanium Nickelide: Effect of Oxygen and Hydrogen Impurities on the Structure and Properties of the Alloys","authors":"Yu. V. Bogatov, V. A. Shcherbakov, D. Yu. Kovalev, N. P. Cherezov, T. V. Barinova, O. D. Boyarchenko, M. I. Alymov","doi":"10.1134/S0020168524701267","DOIUrl":"10.1134/S0020168524701267","url":null,"abstract":"Titanium nickelide alloys have been prepared by self-propagating high-temperature synthesis compaction using equiatomic mixtures of nickel and titanium powders. The alloys were synthesized in a “sand” press die with the use of a “chemical furnace” and in a rigid press die. In the latter process, reaction mixtures were first subjected to mechanical activation (MA), which made it possible to carry out exothermic synthesis and consolidation of the synthesis products without preheating. No inert atmosphere was used in the syntheses. We obtained titanium nickelide samples 70 mm in diameter and 8 mm in thickness. The percentage of the NiTi phase has been shown to depend on the combustion temperature of the Ni + Ti powder mixture and the percentages of oxygen and hydrogen in the starting titanium powder. The largest percentage of the NiTi phase (85 vol %) was reached at a combustion temperature of 1400°C with the use of titanium containing 0.55 wt % oxygen and 0.14 wt % hydrogen. An increase in the oxygen content of the Ni + Ti powder mixture to 2.3 wt % as a result of MA leads to an increase in the content of the Ti2Ni phase in the alloy to 53 vol %. As the hydrogen content of titanium increases to 0.6 wt %, the combustion temperature and speed decrease and free Ni remains in the alloy. The alloys with the highest content of the NiTi phase have the lowest microhardness: HV = 6.2 GPa. As the percentage of the Ti2Ni, Ni3Ti, and Ni4Ti3 phases in the alloys increases, their hardness rises to HV = 11.1 GPa.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 8","pages":"960 - 969"},"PeriodicalIF":0.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602121","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}

引用次数: 0