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International Journal of Self-Propagating High-Temperature Synthesis最新文献

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Influence of Al/Mg Ratio on Synthesis of Mo–Si–B Alloy from MoO3/Al/Mg/Si/B/Al2O3 Mixture Al/Mg 比率对从 MoO3/Al/Mg/Si/B/Al2O3 混合物合成 Mo-Si-B 合金的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700225
Yu. S. Vdovin, V. I. Yukhvid, D. E. Andreev, O. D. Boyarchenko
{"title":"Influence of Al/Mg Ratio on Synthesis of Mo–Si–B Alloy from MoO3/Al/Mg/Si/B/Al2O3 Mixture","authors":"Yu. S. Vdovin, V. I. Yukhvid, D. E. Andreev, O. D. Boyarchenko","doi":"10.3103/S1061386224700225","DOIUrl":"10.3103/S1061386224700225","url":null,"abstract":"","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"249 - 250"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-Propagating High-Temperature Synthesis of Cu–Mn–Al Alloys: Thermoelectric and Magnetic Properties 铜锰铝合金的自蔓延高温合成：热电和磁性能
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700201
A. O. Sivakova, A. V. Karpov, M. L. Busurina, P. A. Lazarev, G. A. Sytschev, Yu. G. Morozov, A. E. Sytschev
{"title":"Self-Propagating High-Temperature Synthesis of Cu–Mn–Al Alloys: Thermoelectric and Magnetic Properties","authors":"A. O. Sivakova,&nbsp;A. V. Karpov,&nbsp;M. L. Busurina,&nbsp;P. A. Lazarev,&nbsp;G. A. Sytschev,&nbsp;Yu. G. Morozov,&nbsp;A. E. Sytschev","doi":"10.3103/S1061386224700201","DOIUrl":"10.3103/S1061386224700201","url":null,"abstract":"<p>The fabrication of ternary Cu–Mn–Al alloys through self-propagating high-temperature synthesis and their thermoelectric properties, such as electrical resistivity and the Seebeck coefficient in a wide range of temperatures, were studied. XRD analysis identified the Heusler compound Cu<sub>2</sub>MnAl in the synthesized compositions as a main precipitated phase. In addition, different secondary phases (Al<sub>2</sub>Cu, Cu<sub>3</sub>Al AlCu, and Mn) appear depending on an excess of aluminum or manganese in the green mixture. The magnetization (<i>M</i>–<i>H</i>) curves constructed for the studied alloys showed their weakly ferromagnetic behavior.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"237 - 244"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Front Instability on the Combustion Initiation in Gas-Free Mixture by Local Hot Point 前沿不稳定性对局部热点引发无气混合物燃烧的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700018
A. P. Aldushin, P. M. Krishenik, S. A. Rogachev, S. V. Kostin
{"title":"Influence of Front Instability on the Combustion Initiation in Gas-Free Mixture by Local Hot Point","authors":"A. P. Aldushin,&nbsp;P. M. Krishenik,&nbsp;S. A. Rogachev,&nbsp;S. V. Kostin","doi":"10.3103/S1061386224700018","DOIUrl":"10.3103/S1061386224700018","url":null,"abstract":"<p>The initiation of combustion of a large mass of condensed mixture being in local contact with the end of the burning layer was mathematically modelled and experimentally studied. The influence of the instability of stationary combustion front in the igniting layer on the penetration of gasless combustion into large volume was showed. It was revealed that the critical conditions for initiating combustion of large volume are determined by front curvature.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"87 - 93"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Combustion of Ti + C and Ti + B Mixtures with Ti Powder Prepared via SHS Hydrogenation and Dehydrogenation 用 SHS 加氢和脱氢制备的钛粉燃烧 Ti + C 和 Ti + B 混合物
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700109
Yu. V. Bogatov, V. A. Shcherbakov, N. P. Cherezov, M. I. Alymov
{"title":"Combustion of Ti + C and Ti + B Mixtures with Ti Powder Prepared via SHS Hydrogenation and Dehydrogenation","authors":"Yu. V. Bogatov,&nbsp;V. A. Shcherbakov,&nbsp;N. P. Cherezov,&nbsp;M. I. Alymov","doi":"10.3103/S1061386224700109","DOIUrl":"10.3103/S1061386224700109","url":null,"abstract":"<p>The combustion of mixtures consisting of titanium powder prepared by SHS hydrogenation and dehydrogenation and black carbon/ boron was studied. It was shown that the oxygen and hydrogen content in Ti powder makes an impact on the combustion characteristics of Ti + C mixtures. It was found that an increase in the hydrogen concentration reduces the combustion temperature, meanwhile, its value is increased with increasing the oxygen content. The mixture with 0.6 wt % hydrogen in synthesized Ti powder did not burn. At 1 wt % oxygen and 0.15 wt % hydrogen, the combustion temperature was showed to reach maximum values, about 3000°C. Contrary to Ti + C mixture, Ti + B mixture components reacted in the SHS mode without additional conditions and the combustion parameters are unaffected by the oxygen and hydrogen content in Ti powder.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"161 - 163"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Catalytic Activity of MWCNTs Doped with Some Transition Metal Phthalocyanines and Modified with Silver in ORR 掺杂某些过渡金属酞菁并用银修饰的 MWCNT 在 ORR 中的催化活性
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700080
K. Yu. Vinogradov, R. V. Shafigulin, V. M. Davydov, S. V. Vostrikov, M. V. Kuznetsov, A. V. Safonov, O. V. Belousova, A. V. Bulanova
{"title":"Catalytic Activity of MWCNTs Doped with Some Transition Metal Phthalocyanines and Modified with Silver in ORR","authors":"K. Yu. Vinogradov,&nbsp;R. V. Shafigulin,&nbsp;V. M. Davydov,&nbsp;S. V. Vostrikov,&nbsp;M. V. Kuznetsov,&nbsp;A. V. Safonov,&nbsp;O. V. Belousova,&nbsp;A. V. Bulanova","doi":"10.3103/S1061386224700080","DOIUrl":"10.3103/S1061386224700080","url":null,"abstract":"<p>Bimetallic oxygen reduction reaction (ORR) catalysts based on multi-walled carbon nanotubes (MWCNTs) doped with cobalt, copper, and nickel phthalocyanines and modified with silver (MWCNT–CoPc–Ag, MWCNT–CuPc–Ag, and WMCNT–NiPc–Ag) were obtained using high-temperature synthesis. The synthesis was carried out at 900°C in a nitrogen atmosphere. Scanning electron microscopy (SEM), low-temperature nitrogen adsorption–desorption, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and powder X-ray diffraction (XRD) were used to determine the physicochemical properties of the synthesized catalysts. The effect of high-temperature synthesis on the textural and morphological properties of materials was also studied. It was shown that the physicochemical parameters of materials largely depend on the nature of the metal in the composition of original phthalocyanine. The electrocatalytic activity of the materials was studied by linear voltammetry in a three-electrode cell with a rotating disk electrode and mercury oxide reference electrode. The MWCNT–CoPc–Ag catalyst showed high electrocatalytic activity in ORR, comparable to that of a commercial platinum catalyst, as well as high corrosion resistance.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"149 - 160"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of Impurity Gas on the Combustion Mode of Granular Mixtures Ti–C–B 杂质气体对 Ti-C-B 粒状混合物燃烧模式的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S106138622470002X
D. S. Vasilyev, B. S. Seplyarskii, R. A. Kochetkov, T. G. Lisina, T. G. Akopdzhanyan
{"title":"The Effect of Impurity Gas on the Combustion Mode of Granular Mixtures Ti–C–B","authors":"D. S. Vasilyev,&nbsp;B. S. Seplyarskii,&nbsp;R. A. Kochetkov,&nbsp;T. G. Lisina,&nbsp;T. G. Akopdzhanyan","doi":"10.3103/S106138622470002X","DOIUrl":"10.3103/S106138622470002X","url":null,"abstract":"<p>Experimental studies of the combustion of granular mixtures (100 – <i>X</i>)(Ti + C) + <i>X</i>(Ti + 2B), 0 ≤ <i>X</i> ≤ 100 wt %, were carried out. Granules 0.6 and 1.7 mm in size were made using an alcoholic solution of polyvinyl butyral. The combustion velocity dependence on <i>X</i> showed two characteristic areas with a boundary between them near <i>X</i> = 60 wt %. At <i>X</i> &gt; 60 wt %, the combustion velocity increased significantly which allowed us to assume a convective mechanism of combustion due to the release of impurity gas. This assumption was verified by experiments in which the impurity gases were filtered through the side surface of samples to exclude the effect of a convective heat transfer. The necessary conditions for the transition to the convective combustion mode were formulated. Calculations showed that the critical conditions were met for mixture 40%(Ti + C) + 60%(Ti + 2B) with granule size of 1.7 mm. The content of impurity gas (presumably hydrogen) for mixtures burning in convective mode was estimated.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"94 - 99"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Structure and Properties of the Promising Ultra-High-Temperature HfB2–HfC–SiC Ceramics Obtained from Heterophase SHS Powders 利用异相 SHS 粉末制备的前景广阔的超高温 HfB2-HfC-SiC 陶瓷的结构与性能
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700067
A. A. Zaitsev, Yu. S. Pogozhev, A. Yu. Potanin, A. N. Astapov, I. O. Vakhrusheva, V. V. Korolev, S. I. Rupasov, E. A. Levashov
{"title":"The Structure and Properties of the Promising Ultra-High-Temperature HfB2–HfC–SiC Ceramics Obtained from Heterophase SHS Powders","authors":"A. A. Zaitsev,&nbsp;Yu. S. Pogozhev,&nbsp;A. Yu. Potanin,&nbsp;A. N. Astapov,&nbsp;I. O. Vakhrusheva,&nbsp;V. V. Korolev,&nbsp;S. I. Rupasov,&nbsp;E. A. Levashov","doi":"10.3103/S1061386224700067","DOIUrl":"10.3103/S1061386224700067","url":null,"abstract":"<p>This work continues the earlier studies focusing on fabrication of heterophase micropowders and consolidated ceramics based on HfB<sub>2</sub>–HfC–SiC ultra-high-temperature boride/carbide compositions via self-propagating high-temperature synthesis (SHS) and hot pressing (HP). The effect of NH<sub>4</sub>Cl addition on the morphology and microstructure of the SHS powders was studied. Composite micropowders characterized by particle size of 0.2–10 μm and 40–50% content of the submicron-sized fraction were fabricated. The structure, mechanical and thermophysical properties, kinetics and mechanism of high-temperature oxidation of hot-pressed ceramic materials composed of 57–72 wt % HfB<sub>2</sub>, 14–20 wt % HfC<sub><i>x</i></sub>, 10–14 wt % SiC, and 8–15 wt % HfO<sub>2</sub> were studied. They are found to have hardness up to 18.9 GPa, crack resistance up to 9.7 MPa m<sup>0.5</sup>, bending strength up to 400 MPa, temperature diffusivity up to 22.6 mm<sup>2</sup>/s, and thermal conductivity up to 59 W/(m K). The power law describes their oxidation kinetics. The protection mechanism against oxidation involves the formation of a multilayered heterogenous oxide film consisting of HfO<sub>2</sub>, HfSiO<sub>4</sub>, and borosilicate glass.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"122 - 137"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141531322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Features of Front Propagation during Combustion of a Thermite-Type Mixture FeO/TiO2/B2O3/Cr2O3/CaCrO4/Al/C under Gravity Forces 在重力作用下 FeO/TiO2/B2O3/Cr2O3/CaCrO4/Al/C 热亚铁型混合物燃烧过程中的前沿传播特征
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700043
S. L. Silyakov, N. Yu. Khomenko, A. E. Sytschev
{"title":"Features of Front Propagation during Combustion of a Thermite-Type Mixture FeO/TiO2/B2O3/Cr2O3/CaCrO4/Al/C under Gravity Forces","authors":"S. L. Silyakov,&nbsp;N. Yu. Khomenko,&nbsp;A. E. Sytschev","doi":"10.3103/S1061386224700043","DOIUrl":"10.3103/S1061386224700043","url":null,"abstract":"<p>The effect of the angle of inclination of a cylindrical reaction volume relative to the horizontal position on the combustion characteristics of a multicomponent thermite-type mixture FeO/TiO<sub>2</sub>/B<sub>2</sub>O<sub>3</sub>/Cr<sub>2</sub>O<sub>3</sub>/CaCrO<sub>4</sub>/Al/C was experimentally studied. It was shown that the combustion parameters, the burning velocity, material loss caused by sputtering, and the yield of target metallic phase into ingot, are unaffected by the angle of inclination. The dynamics of combustion front orientation relative to the burning velocity vector as the front propagates when the cylindrical reaction volume was tilted from 0° to 90° was revealed.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"109 - 115"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the Adsorption Properties of Mesoporous Silica Modified with Silver and Doped with Cerium or Terbium Using Inverse Gas Chromatography 利用反相气相色谱法研究银修饰和掺杂铈或铽的介孔二氧化硅的吸附特性
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700079
A. A. Tokranov, E. O. Tokranova, D. V. Ovchinnikova, R. V. Shafigulin, A. V. Bulanova, M. V. Kuznetsov, A. V. Safonov, O. V. Belousova
{"title":"Study of the Adsorption Properties of Mesoporous Silica Modified with Silver and Doped with Cerium or Terbium Using Inverse Gas Chromatography","authors":"A. A. Tokranov,&nbsp;E. O. Tokranova,&nbsp;D. V. Ovchinnikova,&nbsp;R. V. Shafigulin,&nbsp;A. V. Bulanova,&nbsp;M. V. Kuznetsov,&nbsp;A. V. Safonov,&nbsp;O. V. Belousova","doi":"10.3103/S1061386224700079","DOIUrl":"10.3103/S1061386224700079","url":null,"abstract":"<p>Samples of mesoporous silica gel doped with cerium and terbium and modified with silver were synthesized using the template method. The textural and morphological characteristics of the samples were studied using scanning electron microscopy, inductively coupled plasma mass spectrometry, X-ray diffraction analysis, Fourier-transform infrared (FT-IR) spectroscopy, and nitrogen adsorption-desorption analysis. Moreover, thermodynamic characteristics of adsorption (differential heats and entropies) of test organic compounds were obtained using the inverse gas chromatography method. It was established that the nature of the dopant leads to changes in the textural characteristics of the samples and the heat of adsorption for hydrocarbons and compounds prone to various types of specific interactions.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"138 - 148"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Temperature Synthesis of Cast Ceramic Material Al2O3–Cr2O3 + ZrO2 高温合成铸造陶瓷材料 Al2O3-Cr2O3 + ZrO2
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700055
P. A. Miloserdov, V. A. Gorshkov
{"title":"High-Temperature Synthesis of Cast Ceramic Material Al2O3–Cr2O3 + ZrO2","authors":"P. A. Miloserdov,&nbsp;V. A. Gorshkov","doi":"10.3103/S1061386224700055","DOIUrl":"10.3103/S1061386224700055","url":null,"abstract":"<p>A cast oxide ceramic material consisting of Al<sub>2</sub>O<sub>3</sub>–Cr<sub>2</sub>O<sub>3</sub> solid solution and ZrO<sub>2</sub> inclusions uniformly distributed in it was prepared through metallothermic SHS from highly exothermic thermite-type mixtures containing molybdenum (VI) and chromium (III) oxides and Al/Zr as a combined reducing agent. The influence of green mixture mass on the synthesis parameters, composition, and microstructure of the final products was studied. The optimal conditions for high-temperature synthesis of cast composite oxide material consisting of 80 wt % Al<sub>2</sub>O<sub>3</sub>, 10 wt % Cr<sub>2</sub>O<sub>3</sub>, and 10 wt % ZrO<sub>2</sub> were determined.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"116 - 121"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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