发布求助
文献互助 智能选刊 最新文献

Surface Engineering最新文献

筛选
英文 中文
HVOF Deposition, comparative investigation and optimum selection of molybdenum, boron, chromium, and titanium in Iron amorphous composite coatings 钼、硼、铬、钛在铁非晶复合镀层中的HVOF沉积、对比研究及优化选择
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-04-03 DOI: 10.1080/02670844.2023.2233263
R. Sharma, R. Das, S. Kumar
{"title":"HVOF Deposition, comparative investigation and optimum selection of molybdenum, boron, chromium, and titanium in Iron amorphous composite coatings","authors":"R. Sharma, R. Das, S. Kumar","doi":"10.1080/02670844.2023.2233263","DOIUrl":"https://doi.org/10.1080/02670844.2023.2233263","url":null,"abstract":"ABSTRACT The current investigation focuses on the comparative assessment of each alloying element such as titanium, chromium, boron, and molybdenum on mechanical and solid particle erosion behaviour of Iron amorphous composite coatings. Iron amorphous composite coatings were deposited on 316L steel. Based on mechanical and erosion properties, the ranking of the alloying element was derived using the Fuzzy analytic hierarchy process (FAHP) and Grey relational analysis (GRA). Eight different series of Iron-based composite coatings with varying alloying elements were deposited on 316L steel. The results indicated that titanium showed the maximum hardness and adhesion pull-off strength, boron showed maximum fracture toughness, Molybdenum indicated the lowest porosity and chromium indicated maximum corrosion resistance. The result of FAHP + GRA concluded that the ranking of Fe amorphous composite coatings followed the order as FeCSiMoBCr10Ti (C-2)> FeCSiMoBCr5Ti (C-1) FeCSiMo10BCrTi (C-6)> > FeCSiMo5BCrTi (C-5)> FeCSi10MoBCrTi (C-8) > FeCSiMoB10CrTi (C-4) > FeCSi5MoBCrTi (C-7) > FeCSiMoB5CrTi (C-3).","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"481 - 494"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46355536","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: 2
Effect of bias voltages on microstructure and mechanical properties of (AlCrNbSiTi)N high entropy alloy nitride coatings deposited by arc ion plating 偏压对电弧离子镀（AlCrNbSiTi）N高熵合金氮化物涂层组织和力学性能的影响
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-04-03 DOI: 10.1080/02670844.2023.2236829
Jie Liu, Xiangyu Zhang, X. Zeng, Zechang Xiong, Y. Liu, Yan Lei, Bing Yang
{"title":"Effect of bias voltages on microstructure and mechanical properties of (AlCrNbSiTi)N high entropy alloy nitride coatings deposited by arc ion plating","authors":"Jie Liu, Xiangyu Zhang, X. Zeng, Zechang Xiong, Y. Liu, Yan Lei, Bing Yang","doi":"10.1080/02670844.2023.2236829","DOIUrl":"https://doi.org/10.1080/02670844.2023.2236829","url":null,"abstract":"ABSTRACT (AlCrNbSiTi)N coatings were prepared by arc ion plating at a bias voltage in the range of −50 to −200 V. The as-deposited coatings were all found to have a face-centred cubic structure and exhibit columnar crystal. Si3N4 is distributed in the columnar grains in the form of a network, which separates the columnar grains into fine grains. Si3N4 presents a crystalline state and grows coherently with the surrounding grains to form a nc-(AlCrNbTi)N/nc-Si3N4 nanocomposite structure. The coating with the finest mechanical characteristics was applied at −200 V. The hardness, elastic modulus and wear rate are 34.76, 425 GPa and 0.82 × 10−9 mm3 N−1  m−1, respectively. Based on the outstanding mechanical performance of the coating, it is concluded that the (AlCrNbSiTi)N protective coating has a broad range of potential applications.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"495 - 505"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45071862","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
Long-term oxidation of MoSi2-modified HfB2–SiC–Si/SiC–Si coating at 1700°C mosi2改性HfB2-SiC-Si / SiC-Si涂层在1700℃下的长期氧化
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2223454
Wu Ding, Lei Zhou, Jiaping Zhang, Q. Fu
{"title":"Long-term oxidation of MoSi2-modified HfB2–SiC–Si/SiC–Si coating at 1700°C","authors":"Wu Ding, Lei Zhou, Jiaping Zhang, Q. Fu","doi":"10.1080/02670844.2023.2223454","DOIUrl":"https://doi.org/10.1080/02670844.2023.2223454","url":null,"abstract":"ABSTRACT Slurry impregnation and gaseous Si infiltration were effectively used to produce compact MoSi2-doped Si–HfB2–SiC/Si–SiC (HMSS/SS) coatings with a thickness of 250 μm to protect carbon fibre reinforced carbon (Cf/C) composites from oxygen corrosion at 1700°C. The HMSS/SS coating obtained with a mosaic structure makes it possible to protect Cf/C composites at 1700°C for 276 h and the mass reduction is only 0.99%. The pinning effect of the embedded hafnia, the generated MoB together with the Hf, Mo co-doped Si-based glass layer, which successfully prevented the migration of oxygen, was attributed to the superior oxidation protection ability of the HMSS/SS coatings. This work provides a practical method for successfully extending the service life of Cf/C composites in the aerospace industry.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"315 - 325"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46208443","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: 1
Wear and corrosion behaviour of the cryogenically treated tungsten carbide coatings 低温处理碳化钨涂层的磨损和腐蚀行为
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2218204
A. Govande, B. Ratna Sunil, R. Dumpala
{"title":"Wear and corrosion behaviour of the cryogenically treated tungsten carbide coatings","authors":"A. Govande, B. Ratna Sunil, R. Dumpala","doi":"10.1080/02670844.2023.2218204","DOIUrl":"https://doi.org/10.1080/02670844.2023.2218204","url":null,"abstract":"ABSTRACT The WC–12Co coatings were deposited on SS 410 substrates using a high-velocity oxygen fuel (HVOF) process and the coatings were heat-treated at 750°C for 1 h in argon environment. Further, the coatings were subjected to cryogenic treatment for 1, 2, 8 and 24 h, and its influence on the reciprocating sliding wear and corrosion characteristics was studied. The structural changes in the coatings after post-treatment were assessed by X-ray diffraction analysis and Raman spectroscopy. Microhardness was improved for cryogenically treated coatings due to the α-Co transformation into ϵ-Co. Cryogenic treatment duration was not having a significant effect on the microhardness values. However, the specific wear rate was influenced by the cryogenic treatment duration. Also, corrosion resistance was increased with the increased cryogenic treatment duration. The protective layers consisting of WO3 and Co3O4 phases formed during the cryogenic treatment are attributed to the improved corrosion resistance of the coatings.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"326 - 338"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44572004","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
Plasma nitriding effects in fatigue behaviour of the welded 4340 steel 等离子体氮化对焊接4340钢疲劳性能的影响
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2218208
P. Garcia, A. Cardoso, R. Chales, B. B. Almeida
{"title":"Plasma nitriding effects in fatigue behaviour of the welded 4340 steel","authors":"P. Garcia, A. Cardoso, R. Chales, B. B. Almeida","doi":"10.1080/02670844.2023.2218208","DOIUrl":"https://doi.org/10.1080/02670844.2023.2218208","url":null,"abstract":"ABSTRACT Welding is one of the major assembly processes employed in most common aeronautical applications. However, the consequences of the thermal cycle might be detrimental to the material’s fatigue resistance depending strongly on the resulting microstructure. The 4340 steel is known to present temper embrittlement, which greatly reduces its fatigue life and weldability. This work proposes plasma nitriding as an alternative solution to tempering as a post-weld treatment and investigates its effects on material’s hardness and fatigue life. This analysis was complemented by microstructural and fracture surface characterization. Plasma nitriding resulted in the formation of a double layer consisting of a smaller white micrometric nitride layer at the surface and a more diffuse sub-superficial region which led to better fatigue behaviour when compared with the conventional tempering treatment. The achieved higher surface hardness might also be interesting in other applications such as those involving high erosion and wear.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"339 - 348"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46754100","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
Influence of different modes of microarc oxidation of titanium on the electrochemical properties and surface morphology of the obtained coatings 钛的不同微弧氧化方式对涂层电化学性能和表面形貌的影响
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2223451
V. Kasatkin, I. Kasatkina, N. Bogdashkina, M. Gerasimov, B. Krit, S. Grigoriev, I. Suminov, I. A. Kozlov
{"title":"Influence of different modes of microarc oxidation of titanium on the electrochemical properties and surface morphology of the obtained coatings","authors":"V. Kasatkin, I. Kasatkina, N. Bogdashkina, M. Gerasimov, B. Krit, S. Grigoriev, I. Suminov, I. A. Kozlov","doi":"10.1080/02670844.2023.2223451","DOIUrl":"https://doi.org/10.1080/02670844.2023.2223451","url":null,"abstract":"ABSTRACT The influence of Microarc Oxidation (MAO) modes of titanium substrate in electrolytes of the original composition is investigated. Used electrolytes no contain sodium silicate but includes nickel sulphate, sodium aluminate and alkali. The morphology and composition of the obtained coatings were studied by electron microscopy. The electrochemical behaviour was studied using polarisation curves and electrochemical impedance spectroscopy (EIS). Proposed Equivalent circuits are adequately corresponded to experimental EIS data with no more 6% error. The dependence between the elements of the Equivalent circuits and the morphological characteristics depending on the processing is considered. It is shown that MAO coatings on titanium have high corrosion resistance in an aggressive sulphuric acid. The electrochemical properties of coatings undergo irreversible changes in the direction of deterioration after anodic polarisation. It has been established that nickel doping of MAO coatings on titanium does not allow them to serve as anode materials.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"295 - 306"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47857744","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: 2
Superhydrophobic DTMS/rGO-nanocomposites modified polyurethane sponge for efficient oil–water separation 超疏水DTMS/ rgo纳米复合材料改性聚氨酯海绵高效油水分离
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2217599
Ji Li, Junfeng Lu, Tian C. Zhang, Shaojun Yuan
{"title":"Superhydrophobic DTMS/rGO-nanocomposites modified polyurethane sponge for efficient oil–water separation","authors":"Ji Li, Junfeng Lu, Tian C. Zhang, Shaojun Yuan","doi":"10.1080/02670844.2023.2217599","DOIUrl":"https://doi.org/10.1080/02670844.2023.2217599","url":null,"abstract":"ABSTRACT Dodecyltrimethoxysilane (DTMS)-modified reduced graphene oxide (rGO) nanocomposites were incorporated into polyurethane (PU) sponges by a combination of dip-coating and thermal curing reduction reaction to obtain a novel superhydrophobic DTMS-rGO-PU sponge for effective oil/water separation. The reaction conditions, such as the dip-coating solution concentration, the thermal curing reduction temperature, and the reaction time were demonstrated to be key factors in forming hierarchical DTMS-rGO nanocomposites, which significantly affected the surface wettability of the PU sponge. The resulting DTMS-rGO-PU sponge with a static water contact angle (WCA) of 152.2° displayed superior superhydrophobicity, and achieved an oil–water separation efficiency of 99.89% for various oil/water mixtures. This superhydrophobic sponge also showed minimal deterioration in its high oil adsorption capacity after 100 recycled adsorption operations. Furthermore, the as-prepared DTMS-rGO-PU sponge was proven to be physically and chemically stable and durable in harsh environmental conditions, suggesting its potential for industrial applications in oil spillage management.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"349 - 360"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45173495","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
Influences of Sc(NO3)3 on characteristics of micro-arc oxidation coatings Sc(NO3)3对微弧氧化涂层性能的影响
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2212948
Shaolan Yang, Ping Wang, Jiwei Liu
{"title":"Influences of Sc(NO3)3 on characteristics of micro-arc oxidation coatings","authors":"Shaolan Yang, Ping Wang, Jiwei Liu","doi":"10.1080/02670844.2023.2212948","DOIUrl":"https://doi.org/10.1080/02670844.2023.2212948","url":null,"abstract":"ABSTRACT Micro-arc oxidation (MAO) coatings were fabricated on 2195 aluminium-lithium alloy substrate, using a silicate and phosphate electrolyte with variable scandium nitrate (Sc(NO3)3) concentrations. The properties of the coatings were analysed by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electrochemical workstation. The comprehensive analysis demonstrates that adding proper amount of Sc(NO3)3 increased the oxidation voltage, which transformed the worm shape discharge micropores into round-hole shape, and the MAO coatings presented a double-layer structure. The primary phase composition of the coatings was γ-Al2O3, α-Al2O3, Sc2O3 and Al3Sc. The optimum concentration of Sc(NO3)3 was 0.6 g L−1. The hardness reached a maximum value of (1284 ± 43.5) HV, which was about 2.5 times higher than that without adding. The self-corrosion current density reduced from 138.00 × 10− 7 A cm−2 (substrate) to 3.65 ×  10− 7 A cm−2, which was approximately two orders of magnitude lower, indicating that the corrosion resistance was improved.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"307 - 314"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43012926","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
Investigation of the tribochemical reaction mechanism in dry-type CMP of 6H-SiC substrate 6H-SiC衬底干式CMP摩擦化学反应机理的研究
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2223452
Z. Li, Zhichao Qi, Tian-Dong Zhang, Zhankui Wang, J. Su
{"title":"Investigation of the tribochemical reaction mechanism in dry-type CMP of 6H-SiC substrate","authors":"Z. Li, Zhichao Qi, Tian-Dong Zhang, Zhankui Wang, J. Su","doi":"10.1080/02670844.2023.2223452","DOIUrl":"https://doi.org/10.1080/02670844.2023.2223452","url":null,"abstract":"ABSTRACT In this paper, the tribochemical reaction mechanism between solid powder and 6H-SiC substrate was investigated. White light interferometer was used to detect surface roughness, FESEM was used to observe surface characteristics, EDS was used to detect surface elements and XRD was used to detect surface components. The tribochemical reaction mechanism of the reduced iron powder, anhydrous sodium carbonate and deionized water with 6H-SiC was analysed by the detection results. It is found that the reduced iron powder, anhydrous sodium carbonate and deionized water react with the 6H-SiC surface to form a soft interfacial transition layer which can be removed. The removal rate of the reduced iron powder is the highest at 191 nm h–1. The surface quality decreases after polishing with the anhydrous sodium carbonate. The results of this study provide a new idea for the field of ultra-precision machining.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"361 - 370"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43640902","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
Energy storehouse and a remarkable photocatalyst: Al2S3/Cu2S/Ni17S18 thin film as supercapacitor electrode and pollutants degradation 能量库和卓越的光催化剂:Al2S3/Cu2S/Ni17S18薄膜作为超级电容器电极和污染物降解
IF 2.8 4区 材料科学
Surface Engineering Pub Date : 2023-03-04 DOI: 10.1080/02670844.2023.2223453
M. M. Gul, K. Ahmad
{"title":"Energy storehouse and a remarkable photocatalyst: Al2S3/Cu2S/Ni17S18 thin film as supercapacitor electrode and pollutants degradation","authors":"M. M. Gul, K. Ahmad","doi":"10.1080/02670844.2023.2223453","DOIUrl":"https://doi.org/10.1080/02670844.2023.2223453","url":null,"abstract":"ABSTRACT Fabrication of the tri metal sulphide Al2S3-Cu2S-Ni17S18 thin film was achieved by physical vapour deposition. The synthesised material was fully characterised by XRD, SEM, EDX, UV-visible spectrophotometer and FTIR. A nanoscale ranged 23.5 nm average crystallite size was obtained for the ternary metal sulphide. A motley of clustered morphological particles was observed by SEM with the confirmation of the desired metals through energy dispersive X-ray. Band gap energy possessed by the ternary metal sulphide was 2.5 eV. The remarkable energy storing capability of the electrode was investigated by cyclic voltammetry, which presented a supercapacitance of 595 F g−1 expressing the pertinence of the synthesised material. Cycling stability of the nanoparticle thin film was also observed through the voltammetric analysis. Furthermore, the environmental applicability of the thin film was investigated by the photocatalytic degradation of pollutants with an impressive degradation rate constant 3.61 × 10−2 min−1 achieved for pesticide.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"371 - 386"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41872838","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: 3
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信