International Journal of Applied Ceramic Technology最新文献_第2页

Sol–gel fabrication of thermoelectric P-type Ca2.5Ag0.3Ce0.2Co4O9 materials for aerospace applications 航空航天用热电p型Ca2.5Ag0.3Ce0.2Co4O9材料的溶胶-凝胶制备

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-21 DOI: 10.1111/ijac.15071

Enes Kilinc, Fatih Uysal, Mucahit Abdullah Sari, Huseyin Kurt, Erdal Celik

{"title":"Sol–gel fabrication of thermoelectric P-type Ca2.5Ag0.3Ce0.2Co4O9 materials for aerospace applications","authors":"Enes Kilinc, Fatih Uysal, Mucahit Abdullah Sari, Huseyin Kurt, Erdal Celik","doi":"10.1111/ijac.15071","DOIUrl":"https://doi.org/10.1111/ijac.15071","url":null,"abstract":"The article provides a comprehensive description of the synthesis and characterization of Ca2.5Ag0.3Ce0.2Co4O9 semiconducting ceramics for potential application in thermoelectric generators, particularly in the aerospace industry. These materials were synthesized using the sol–gel method, with distilled water serving as the solvent and citric acid monohydrate incorporated into expedited gel formation. The pH and turbidity values of solutions were monitored through a pH meter and turbidimeter, respectively. The produced xerogel was subjected to drying at 200°C for 2 h in an air atmosphere to remove residual moisture and volatile by-products. The desiccated powders were then heat-treated at 800°C for 2 h under ambient air conditions, yielding the final Ca2.5Ag0.3Ce0.2Co4O9 compound. Thermal processing of the resulting pellets was carried out at 900°C for 24 h to fabricate bulk samples. Comprehensive characterization was performed to assess thermal, structural, microstructural, and thermoelectric behaviors via DTA-TG, XRD, XPS, SEM, and TM machines. It was found that at 800°C, a maximum power factor of .24 mW/m·K2 was achieved, derived from a Seebeck coefficient of 214.30 µV/K and electrical resistivity of 19.05 mΩ·cm at the same temperature. The synthesized ceramic materials exhibit promising thermoelectric efficiency, making them suitable for thermoelectric generator production.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.15071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of TiN−HA nanocomposite developed through rapid microwave sintering route at high temperature 高温快速微波烧结法制备TiN−HA纳米复合材料

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-21 DOI: 10.1111/ijac.15070

Chintam Suresh Kumar, Shivani Gupta, Apurbba Kumar Sharma

{"title":"Characterization of TiN−HA nanocomposite developed through rapid microwave sintering route at high temperature","authors":"Chintam Suresh Kumar, Shivani Gupta, Apurbba Kumar Sharma","doi":"10.1111/ijac.15070","DOIUrl":"https://doi.org/10.1111/ijac.15070","url":null,"abstract":"Titanium is one of the most suitable metals used in medical implants. Titanium alloys and titanium-based ceramics are widely used in orthodontics and orthopedic applications. In addition, titanium-based composites are preferred biomaterials for orthopedic applications and bioactive coatings. This work focuses on using relatively stable TiN material for the fabrication of TiN−HA composite through a rapid sintering technique at a process temperature of ∼1400–1450°C in a modified domestic microwave applicator at 800 W power. Microwave sintered nanocomposites were characterized in terms of density, measurement of microhardness, analysis of microstructures, and indentation fracture toughness. Sintered nanocomposites (with 15 wt% and 25 wt% HA) achieved ∼95% densification with comparable microhardness with respect to bulk TiN. However, the fracture toughness of the nanocomposites was compromised with the addition of the brittle HA phase when compared with pure TiN. The XRD results revealed an interaction between the constituent phases resulting in the formation of calcium titanate (CaTiO3) and α-tri calcium phosphate (α-Ca3(PO4)2) due to high processing temperature. Furthermore, microstructures clearly show good bonding between particles. The developed nanocomposites exhibited reasonable properties with biocompatible phases; consequently, the nanocomposites can be candidates for coating other metals and inert biomaterials.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770645","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

Preparation of CaSiO3 porous scaffold via DLP 3D printing and its surface modification through in situ growth of HAp DLP 3D打印制备CaSiO3多孔支架及其原位生长HAp表面改性

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-21 DOI: 10.1111/ijac.15074

Yang Liu, Ruixue Sun, Jianmin Han

{"title":"Preparation of CaSiO3 porous scaffold via DLP 3D printing and its surface modification through in situ growth of HAp","authors":"Yang Liu, Ruixue Sun, Jianmin Han","doi":"10.1111/ijac.15074","DOIUrl":"https://doi.org/10.1111/ijac.15074","url":null,"abstract":"Calcium silicate (CaSiO3, CS) bioceramic has received widespread attention in the field of bone repair due to its excellent bone conductivity, osteoinductivtiy, and degradability. In this study, the porous CS scaffold was firstly prepared by digital light processing (DLP) 3D printing. The effects of solid loading, pore size, and sintering temperature on the compressive strength, porosity and shrinkage of the CS scaffold were thoroughly investigated. When the solid loading is 35 vol.%, the pore size is 500 µm, and the sintering temperature is 1200°C, the prepared CS scaffold has high porosity (48.96 %) and high compressive strength (32.13 MPa). To solve the problems caused by the rapid degradation of CS, surface modification of the prepared CS scaffold was further conducted through in situ growth of hydroxyapatite (HAp) on its surface. A large amount of HAp nanorods homogeneously grow on the surface of the CS porous scaffold when the concentration of KH2PO4 in hydrothermal solution is 0.01 mol/L. Moreover, the phase composition and morphology of HAp grown on the surface of the CS scaffold can be controlled through controlling the concentration of KH2PO4.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770643","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

Temperature-controlled synthesis of bismuth tungstate with enhanced photochromic properties 具有增强光致变色性能的钨酸铋的温控合成

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-21 DOI: 10.1111/ijac.15079

Emine Kayhan

{"title":"Temperature-controlled synthesis of bismuth tungstate with enhanced photochromic properties","authors":"Emine Kayhan","doi":"10.1111/ijac.15079","DOIUrl":"https://doi.org/10.1111/ijac.15079","url":null,"abstract":"This study explores the photochromic properties of bismuth tungstate (Bi2WO6) synthesized via a solid-state method at various temperatures (300°C–1000°C) to optimize light-responsive behavior for potential applications. The Bi2WO6 samples, prepared from tungsten oxide (WO3) and bismuth oxide (Bi2O3) through heat treatment, were analyzed using X-ray diffraction (XRD), UV-Vis Diffuse Reflectance Spectroscopy (UV-DRS), and scanning electron microscopy (SEM) techniques. XRD results revealed the formation of the Bi2WO6 phase at higher temperatures, while the Bi14W2O27 phase, formed at 400°C–500°C, exhibited an oxygen-deficient structure enabling significant color shifts. Band gap analysis showed that samples synthesized at 400°C and 500°C had a lower band gap (2.63 eV) compared to those prepared at higher temperatures, suggesting enhanced electronic properties due to oxygen vacancies. SEM images showed nanoscale crystal facets in the 400°C and 500°C samples, which facilitated effective sunlight excitation and stable color changes. Under sunlight exposure, these samples transitioned from yellow to greenish brown within 5 min, quickly reaching color saturation, while samples synthesized at higher temperatures showed minimal photochromic response. This work is the first to report on the photochromic properties of Bi2WO6 synthesized through solid-state methods, highlighting the role of oxygen vacancies, reduced band gap, and nanoscale morphology on enhancing photochromic performance.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.15079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High crystallinity CSP bioceramics with excellent mechanicals for 3D printed bone regeneration repairing 高结晶度CSP生物陶瓷，具有优异的机械性能，用于3D打印骨再生修复

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-21 DOI: 10.1111/ijac.15084

Chenliang Zhou, Wei Chen, Yiran Liang, Jiali Zhang, Li Huang, Zhili Chen, Xiangyu Cheng, Yunxiang Zhang, Qinfang Zhang

{"title":"High crystallinity CSP bioceramics with excellent mechanicals for 3D printed bone regeneration repairing","authors":"Chenliang Zhou, Wei Chen, Yiran Liang, Jiali Zhang, Li Huang, Zhili Chen, Xiangyu Cheng, Yunxiang Zhang, Qinfang Zhang","doi":"10.1111/ijac.15084","DOIUrl":"https://doi.org/10.1111/ijac.15084","url":null,"abstract":"Large bone defects caused by disease, physiological deformation, and accidental injury present significant challenges for clinical bone tissue repair. Calcium silicon phosphate (CSP)-based bioceramics are widely used for clinical bone defect repair with the advantages of biocompatibility and osteogenic properties. However, poor mechanical strength limits their load-bearing applications. In this work, a novel CSP-based bioceramic, Nagelschmidtite (Nagel, Ca7Si2P2O16), was fabricated by the molten salt synthesis (MSS), sol‒gel, and solid-state reaction methods. Materials characterization revealed the Nagel powders fabricated from the MSS method possess high crystallinity, uniform particle size distribution, and smooth particle surfaces, and their disks exhibited low porosity and high density. Benefiting from the above characterizations, the mechanical strength of the MSS sample was enhanced by roughly 6.07 times relative to the sol‒gel sample. Meanwhile, the stable degradation performance and bone mineralization ability mean that MSS samples have the potential for direct application with load-bearing sites. Furthermore, MSS Nagel can be used to support three dimensional (3D)-printed scaffolds of various shapes. These findings demonstrate that Nagel bioceramics, produced with high crystallinity through the MSS method, are highly promising as 3D-printed biomaterials for applications in bone tissue regeneration.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770642","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

High temperature stability of SiC/mullite mini composites SiC/莫来石微型复合材料的高温稳定性

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-20 DOI: 10.1111/ijac.15078

Wei Zhang, Qingsong Ma, Kuanhong Zeng, Weiguo Mao

引用次数: 0

Rare earth silicate in SiCf/SiC composites: Toward water‒oxygen corrosion resistance in high-temperature gas environment SiCf/SiC复合材料中的稀土硅酸盐：在高温气体环境中抗水-氧腐蚀

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-13 DOI: 10.1111/ijac.15065

Longjiao Pu, Qing Zhang, Fang Ye, Laifei Cheng, Guangda Guo

{"title":"Rare earth silicate in SiCf/SiC composites: Toward water‒oxygen corrosion resistance in high-temperature gas environment","authors":"Longjiao Pu, Qing Zhang, Fang Ye, Laifei Cheng, Guangda Guo","doi":"10.1111/ijac.15065","DOIUrl":"https://doi.org/10.1111/ijac.15065","url":null,"abstract":"Silicon carbide fiber-reinforced silicon carbide ceramic matrix (SiCf/SiC) composites are considered as one of the preferred materials for aero-engine hot-end components; however, they will face serious performance degradation when exposed to the complex and harsh environment of high temperature and water‒oxygen corrosion coupling. How to solve the problem of SiCf/SiC composites is a growing concern in the international community. Rare earth silicate materials usually have the advantages of good high-temperature stability, low oxygen permeability constant, and thermal expansion coefficient matching with SiC, which are internationally recognized as the preferred systems for the new generation of environmental barrier coatings (EBCs); meanwhile, the use of rare earth compounds for matrix modification of SiCf/SiC composites to improve their resistance to water‒oxygen corrosion has gained wide attention. Therefore, the recent progress in rare earth silicate EBCs and modified SiCf/SiC composites are reviewed. Finally, the challenges and prospects of rare earth silicate in improving the water‒oxygen corrosion resistance of SiCf/SiC composites are presented.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770551","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 H2O impurity in marine exhaust on the CO2 capture performance of novel composite CaO–Al2O3–Fe2O3 absorbents 海洋废气中H2O杂质对新型复合CaO-Al2O3-Fe2O3吸附剂捕集CO2性能的影响

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-10 DOI: 10.1111/ijac.15066

Xin Zhang, Qiuwan Shen, Gaokui Chen, Kuanyu Zhu, Shian Li

{"title":"Effect of H2O impurity in marine exhaust on the CO2 capture performance of novel composite CaO–Al2O3–Fe2O3 absorbents","authors":"Xin Zhang, Qiuwan Shen, Gaokui Chen, Kuanyu Zhu, Shian Li","doi":"10.1111/ijac.15066","DOIUrl":"https://doi.org/10.1111/ijac.15066","url":null,"abstract":"The CaO-based absorbent recycling carbon capture technology is an effective way to reduce CO2 emissions from marine exhaust gas. Inert supports (MgO, Al2O3) and active additives (Fe2O3) were used to obtain economical and efficient CaO-based absorbents. The experiment results show that CaO–Al2O3–Fe2O3 (CAF) absorbent has the best CO2 adsorption performance. Compare with the initial adsorption capacity of 0.64 g/g, the adsorption capacity after 20th cycle can still achieve 0.62 g/g. The characterizing results show that CAF absorbent has the largest pore size and specific surface area. The absorbents doped with active additives Fe2O3 can effectively improve the CO2 adsorption capacity and cycle stability. In addition, the influence of H2O impurity on the cycle performance of the developed CAF absorbent was studied deeply. Results show that the cyclic adsorption performance of CAF absorbent decreases with the increase of the H2O concentration. With the increase of the cycle numbers, the existence of H2O will reduce the anti-sintering performance of absorbents, which will lead to the aggregation of absorbents particles, thus reducing their adsorption performance. Therefore, the CAF absorbent developed in this study has excellent adsorption capacity and cycle stability.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770065","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

Ion sputtering resistance of dense h-BN thick film prepared via a chemical vapor deposition technique 化学气相沉积法制备h-BN厚膜的抗离子溅射性能

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-10 DOI: 10.1111/ijac.15061

Lei Chen, Dongxu Yao, Ming Zhu, Jun Zhao, Yongfeng Xia, Yu-Ping Zeng

{"title":"Ion sputtering resistance of dense h-BN thick film prepared via a chemical vapor deposition technique","authors":"Lei Chen, Dongxu Yao, Ming Zhu, Jun Zhao, Yongfeng Xia, Yu-Ping Zeng","doi":"10.1111/ijac.15061","DOIUrl":"https://doi.org/10.1111/ijac.15061","url":null,"abstract":"Hexagonal boron nitride (h-BN) ceramics are promising materials for Hall thruster acceleration channel walls due to their high heat resistance, low thermal expansion, superior thermal shock resistance, and appropriate secondary electron emission coefficients. Nevertheless, its utility is considerably curtailed by a limited service life due to inadequate densification and suboptimal ion sputtering resistance. In this work, dense h-BN ceramics were fabricated through hot-press sintering utilizing Y2O3-Al2O3 as a sintering additive. A chemical vapor deposition (CVD) technique was then employed to create a dense h-BN thick film on the ceramic surface. Furthermore, an assessment of the sputtering resistance of the obtained h-BN ceramic and the dense h-BN thick film is conducted through focused ion beam sputtering. Results show that the sputtering depth of the dense h-BN thick film is only 50% of that of the h-BN ceramics under identical conditions. Following the depletion of the thick film, the sputtering loss rate of the h-BN ceramics with the film matches that of those without. These results underscore the efficacy of depositing a dense h-BN thick film through CVD, offering a potent strategy for substantially enhancing the ion sputtering resistance of h-BN ceramics without necessitating alterations in composition.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770066","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

Effects of Li+ and/or F− modification methods on the sintering behaviors, microstructures of Mg2SiO4 ceramics Li+和/或F−改性方法对Mg2SiO4陶瓷烧结行为和显微组织的影响

IF 1.8 4区材料科学

International Journal of Applied Ceramic Technology Pub Date : 2025-02-09 DOI: 10.1111/ijac.15052

J. J. Bian, Q. R. Liu

{"title":"Effects of Li+ and/or F− modification methods on the sintering behaviors, microstructures of Mg2SiO4 ceramics","authors":"J. J. Bian, Q. R. Liu","doi":"10.1111/ijac.15052","DOIUrl":"https://doi.org/10.1111/ijac.15052","url":null,"abstract":"In this paper, we prepared four different Mg2SiO4 samples modified by LiF-addition, LiF-doping, Li2CO3-addition, and purely F−doping, respectively to comparatively investigate the effects of the Li+ and/or F− modification methods on the sintering behaviors, microstructures, and microwave dielectric properties of the Mg2SiO4 ceramics. It was found that the sintering behaviors, reactions involved in the process, and corresponding microstructures of the modified Mg2SiO4 ceramics are sensitive to the Li+ and/or F− modification methods. The 2 wt% LiF-doped, F-doped, Li2CO3-added, and LiF-added samples could be densified at 1575°C/2 h, 1525°C/2 h, 1400°C/2 h, and 900°C/2 h, respectively. The liquid phase sintering justified the enhancement of sinterability by the LiF or Li2CO3-addition. The lower sintering temperature of the LiF-added sample than that of the Li2CO3-added one could be understood by considering the lower melting point (∼800°C) and viscosity of the LiF–SiO2–SiF4 ternary eutectic liquid phase than that of Li2SiO3–SiO2 binary liquid phase (∼1350°C). The easy evaporation of SiF4 for the LiF-added Mg2SiO4 results in a high porosity of ∼5% after sintering at 900°C. All modified samples demonstrate similar optimized relative dielectric permittivities (εr) of ∼7 and Q × f values of ∼83000 GHz despite slight differences in the porosities and phase assemblages.","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770219","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