IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-02-11 DOI: 10.1016/j.vacuum.2026.115177

Yue-Chi Chen , Hai-Yun Chuang , You-Peng Chen , Xiaoding Qi , Liji Huang

{"title":"Greatly increased isoprene sensitivity by Pd surface decoration of Si-doped tungsten oxide films","authors":"Yue-Chi Chen , Hai-Yun Chuang , You-Peng Chen , Xiaoding Qi , Liji Huang","doi":"10.1016/j.vacuum.2026.115177","DOIUrl":"10.1016/j.vacuum.2026.115177","url":null,"abstract":"<div><div>Si-doped WO<sub>3</sub> films with Pd surface decoration were deposited by RF magnetron sputtering for isoprene sensing. A few decoration processes were attempted to achieve best sensing performance. Although Pd decoration induced a negligible change in X-ray diffraction patterns, a variation in band gap was observed, due to an increased number of oxygen vacancies in the films as revealed by X-ray photoelectron spectroscopy, which also indicated that Pd was partially oxidized. Transmission electron microscopy confirmed that the film surface was covered by a layer of Pd nanoparticles, which had the Pd/PdO core-shell nanostructure with a size of 5-10 nm. Si-doped WO<sub>3</sub> films with 0.64/1 Pd decoration exhibited excellent isoprene response, measuring 43.8 for 5 ppm isoprene and 8.03 for 0.7 ppm isoprene at a working temperature of 350 °C. The films showed an extremely short isoprene response time of about 0.4 s. Moreover, the films showed a good selectivity, with the sensor response of isoprene being 2.3, 7.0, 7.4, 16.9, and 20.6 times higher than that of ethanol, methanol, acetone, CO<sub>2</sub>, and CO, respectively.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115177"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Photocatalytic anti-corrosion performance and mechanism investigation over Ag nanoparticles loaded defective g-C3N4 Ag纳米粒子负载缺陷g-C3N4的光催化防腐性能及机理研究

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-01-31 DOI: 10.1016/j.vacuum.2026.115140

Yongning Ma , Yesong Liang , Mingyuan Guo , Enzhou Liu , Xiaolong Li

{"title":"Photocatalytic anti-corrosion performance and mechanism investigation over Ag nanoparticles loaded defective g-C3N4","authors":"Yongning Ma , Yesong Liang , Mingyuan Guo , Enzhou Liu , Xiaolong Li","doi":"10.1016/j.vacuum.2026.115140","DOIUrl":"10.1016/j.vacuum.2026.115140","url":null,"abstract":"<div><div>Photocatalytic cathodic protection (PCP) offers a sustainable alternative to sacrificial anodes by eliminating anode consumption. In this work, Ag nanoparticle-loaded nitrogen-defective (CNv) and carbon-defective (CvN) g-C<sub>3</sub>N<sub>4</sub> were synthesized for steel protection. Characterization confirmed the uniform loading of Ag nanoparticles on the defective structures. Notably, the 0.5%AgCvN composite exhibited superior anti-corrosion performance, evidenced by the lowest surface roughness and corrosion rate (4.7 g m<sup>−2</sup>·year<sup>−1</sup>), which is only 17.3% of that of bare steel (27.2 g m<sup>−2</sup>·year<sup>−1</sup>). EPR and PL analyses reveal that carbon vacancies serve as effective hole traps to suppress the recombination rate of charge carriers, and Ag nanoparticles facilitate electron migration via the Schottky barrier. Furthermore, Mott-Schottky analysis demonstrates that the 0.5%AgCvN possesses the most negative conduction band potential (−1.25 eV), endowing it with a stronger reducing power. The efficient migration of photoexcited electrons to the steel surface effectively suppresses anodic corrosion processes by providing cathodic protection. This study thus offers a promising strategy for the development of high-performance photocatalytic anti-corrosion materials.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115140"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 alloying elements on the microstructure and mechanical properties of laser powder deposited Ti-27Nb-5Zr-based metastable β-Ti alloys 合金元素对激光粉末沉积ti - 27nb - 5zr基亚稳β-Ti合金组织和力学性能的影响

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.vacuum.2026.115136

Zelin Jiang , Jiaxuan Wang , Jinxiang Fang , Haotian He , Haojie Jin , Yuebing Li , Tong Sun , Yongxiong Chen

{"title":"Effects of alloying elements on the microstructure and mechanical properties of laser powder deposited Ti-27Nb-5Zr-based metastable β-Ti alloys","authors":"Zelin Jiang , Jiaxuan Wang , Jinxiang Fang , Haotian He , Haojie Jin , Yuebing Li , Tong Sun , Yongxiong Chen","doi":"10.1016/j.vacuum.2026.115136","DOIUrl":"10.1016/j.vacuum.2026.115136","url":null,"abstract":"<div><div>Four metastable β-Ti alloys, with nominal compositions of Ti-27Nb-5Zr-5Cr, Ti-27Nb-5Zr-2Cr, Ti-27Nb-5Zr-5Cr-2Fe, and Ti-27Nb-5Zr-3.5Mo (wt.%), were fabricated via intermittent laser powder deposition (ILD). The influence of Cr, Fe, and Mo on the microstructure and mechanical properties was systematically investigated. The results showed that all four alloys exhibited excellent strength-ductility synergy, with Ti-27Nb-5Zr-5Cr having the best strength-ductility product (17.2 ± 0.2 GPa·%). When the Cr content was reduced, both solid-solution strengthening and β phase stability were weakened, ω phase precipitation was promoted, and twinning-induced plasticity (TWIP) was enhanced. Although the elongation (EL) remained unchanged, the yield strength (YS) and ultimate tensile strength (UTS) decreased to 592 ± 26 MPa and 685 ± 18 MPa, respectively, corresponding to only 87% and 90% of those of Ti-27Nb-5Zr-5Cr, and the strength-ductility product decreased by 17%. The addition of 2 wt% Fe further enhanced β phase stability and solid-solution strengthening, increasing YS and UTS to 690 ± 11 MPa and 799 ± 4 MPa. Notably, the β phase in Ti-27Nb-5Zr-3.5Mo was more stable, and this alloy achieved the highest YS and UTS (710 ± 10 MPa and 814 ± 32 MPa), but the lowest EL and strength-ductility product (15 ± 3% and 11.9 ± 2.4 GPa·%).</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115136"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Co-optimization and performance investigation of water ring vacuum pump impeller and casing profiles based on entropy production theory 基于熵产理论的水环真空泵叶轮与机匣型线协同优化及性能研究

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-01-13 DOI: 10.1016/j.vacuum.2026.115093

Qingyun Li , Haibo Sun , Guoyong Zhao , Yanjie Li , Shuo Yu , Jingyao Bian

{"title":"Co-optimization and performance investigation of water ring vacuum pump impeller and casing profiles based on entropy production theory","authors":"Qingyun Li , Haibo Sun , Guoyong Zhao , Yanjie Li , Shuo Yu , Jingyao Bian","doi":"10.1016/j.vacuum.2026.115093","DOIUrl":"10.1016/j.vacuum.2026.115093","url":null,"abstract":"<div><div>The internal flow characteristics and hydraulic performance of water ring vacuum pumps are significantly affected by the impeller and casing profiles. To reduce energy losses and improve suction performance and efficiency, a multi-objective co-optimization of the impeller and casing profiles of a water ring vacuum pump is conducted by integrating experimental measurements with numerical simulations. First, a theoretical model of hydraulic losses in water ring vacuum pumps is established based on entropy production theory, revealing the underlying mechanisms of these losses. Subsequently, the flow fields and overall performance before and after optimization are compared through integrated suction-performance analysis. The effects of profile parameters on suction capacity and hydraulic losses are thereby revealed, providing a theoretical basis for the structural optimization of water ring vacuum pumps. Results indicate that, in the optimization model targeting minimal wall effect entropy production, the wall effect entropy production decreases by 15.14 %, accompanied by a 0.47 % improvement in isothermal compression efficiency. In the optimization model targeting maximum suction capacity, the suction capacity increases by 17.83 %, and the isothermal compression efficiency improves by 4.16 %.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115093"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Design and performance of a lightweight, high power density permanent magnet Hall thruster 轻量化、高功率密度永磁霍尔推力器的设计与性能

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-01-15 DOI: 10.1016/j.vacuum.2026.115095

Zijian Liu , Zijie Li , Zhihao Liu , Yong Wang , Rui Ding , Dezhi Sun , Chao Song , Yongjie Ding

{"title":"Design and performance of a lightweight, high power density permanent magnet Hall thruster","authors":"Zijian Liu , Zijie Li , Zhihao Liu , Yong Wang , Rui Ding , Dezhi Sun , Chao Song , Yongjie Ding","doi":"10.1016/j.vacuum.2026.115095","DOIUrl":"10.1016/j.vacuum.2026.115095","url":null,"abstract":"<div><div>The rapid deployment of commercial mega-constellations has created an urgent demand for electric propulsion systems that combine lightweight design with high power density. Although permanent magnet Hall thrusters have become one of the main practical solutions, they face a critical thermal-magnetic conflict: increasing power density exacerbates heat accumulation, leading to irreversible demagnetization due to the intrinsic thermal sensitivity of the permanent magnets. To address this fundamental challenge, this paper proposes a novel thermal management architecture based on the HEP-1350PM V2 thruster as the platform. The design replaces traditional structures with a lightweight 7075 aluminum alloy frame and integrates a black anodized radiator to form a low-thermal-resistance conduction path, significantly enhancing heat conduction and radiation capabilities. This approach effectively overcomes thermal bottlenecks, enabling stable operation under high thermal loads. Experimental results demonstrate that the thruster can reach thermal equilibrium across a wide power range from 200 W to 2 kW. Its peak total efficiency reaches 63.3 % with xenon propellant and 50.2 % with krypton propellant, while its power-to-weight ratio reaches 1.11 kW/kg, three times that of the SPT-100 thruster.</div><div>This study validates the effectiveness of the proposed architecture, providing a thermal management strategy for future high-power, lightweight space propulsion systems.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115095"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Vapor-assisted solid-state sintering of CsPbI3@SiO2 core-shell nanocrystals for enhanced environmental stability 蒸汽辅助固体烧结CsPbI3@SiO2核壳纳米晶体增强环境稳定性

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-01-26 DOI: 10.1016/j.vacuum.2026.115139

Longxun Teng, Xin Li, Yuanxin Chunyu, Jiaxiang Liang, Xinyue Shao, Haiqing Sun, Xiaoyuan Zhan, Weiwei Zhang, Rui Liu, Jianxu Ding, Huiling Zhu

引用次数: 0

Microstructure and mechanical properties of titanium alloy via laser powder bed fusion and heat treatment 激光粉末床熔合和热处理钛合金的显微组织和力学性能

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-01-28 DOI: 10.1016/j.vacuum.2026.115135

Jinyin Fu , Libo Zhou , Zhou Li , Cong Li , Minbo Wang , Jian Chen

{"title":"Microstructure and mechanical properties of titanium alloy via laser powder bed fusion and heat treatment","authors":"Jinyin Fu , Libo Zhou , Zhou Li , Cong Li , Minbo Wang , Jian Chen","doi":"10.1016/j.vacuum.2026.115135","DOIUrl":"10.1016/j.vacuum.2026.115135","url":null,"abstract":"<div><div>In this study, Ti-6.5Al-3.5Mo-1.5Zr-0.3Si (TC11) alloy was fabricated using laser powder bed fusion. By analyzing the printing quality and mechanical properties of TC11 alloy printed under different process parameters, an optimum processing window (laser power of 200 W, laser scanning speed of 1100 mm/s) was identified. Under the optimal process parameters, the sample achieved a relative density of 99.6 % and excellent mechanical properties (Ultimate Tensile Strength of 1331 ± 11 MPa, Yield Strength of 1004 ± 13 MPa and Elongation of 12.1 ± 1.2 %). After heat-treated at 900 °C, the sample exhibited an equiaxed α phase and thin film β phase with the elongation increasing by approximately 39.3 % (from 12.1 ± 1.2 % to 16.8 ± 0.6 %), while the yield strength (996 ± 1 MPa) remained at the as-built level. The enhanced ductility of the heat-treated sample is attributed to three key factors: the decreased low-angle grain boundaries which minimizes stress concentration during deformation, the reduced α′ martensite with thin-film β-phase formation (coordinating plastic flow via a ductile phase), and the improved α-β crystallographic coincidence with reduced lattice distortion, lowering interfacial stress and promoting slip transmission.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115135"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Entropy engineered p-type Ag-alloyed CoCrFeNi metallic high entropy alloys with low lattice thermal conductivity 熵工程p型ag合金CoCrFeNi金属高熵低晶格导热合金

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-01-23 DOI: 10.1016/j.vacuum.2026.115130

K. Arun , Kowsalya Senthil Kumar , Navaneethan Mani , Senthil Kumar Eswaran

{"title":"Entropy engineered p-type Ag-alloyed CoCrFeNi metallic high entropy alloys with low lattice thermal conductivity","authors":"K. Arun , Kowsalya Senthil Kumar , Navaneethan Mani , Senthil Kumar Eswaran","doi":"10.1016/j.vacuum.2026.115130","DOIUrl":"10.1016/j.vacuum.2026.115130","url":null,"abstract":"<div><div>High Entropy alloys (HEAs) have recently emerged as promising candidates for thermoelectric applications due to their tunable transport properties enabled by entropy engineering. In this work, we investigate the effect of entropy engineering on the thermal and electrical transport properties of CoCrFeNi system through Ag alloying. The CoCrFeNiAg<sub>0.2</sub> alloy exhibited a low lattice thermal conductivity of ∼1.34 Wm<sup>−1</sup>K<sup>−1</sup> at 700 K, which is ∼8.6 times lower than that of the parent alloy, attributed to severe lattice distortions induced by mass and size disorder. All the HEA compositions displayed rare <em>p</em>-type conduction. Notably, the CoCrFeNiAg<sub>0.1</sub> showed the highest Seebeck coefficient of ∼17.5 μVK<sup>−1</sup>, representing a 44.6 % enhancement over the reference alloy, along with the highest power factor of 213 μWm<sup>−1</sup>K<sup>−2</sup> at 700 K. These results demonstrate that entropy-driven atomic disorder is an effective strategy to suppress phonon transport and enhance the thermoelectric performance in metallic HEAs.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115130"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synergistic strengthening by brazing-aging and corrosion behavior of a high-strength corrosion-resistant four-layer cladding aluminum alloy 一种高强度耐腐蚀四层熔覆铝合金钎焊时效和腐蚀行为的协同强化

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-02-10 DOI: 10.1016/j.vacuum.2026.115172

Qi Cao , Na Zhao , Tianyi Yang , Zhengjin Zhang , Long Cheng , Dejing Zhou , Hui Liu

{"title":"Synergistic strengthening by brazing-aging and corrosion behavior of a high-strength corrosion-resistant four-layer cladding aluminum alloy","authors":"Qi Cao , Na Zhao , Tianyi Yang , Zhengjin Zhang , Long Cheng , Dejing Zhou , Hui Liu","doi":"10.1016/j.vacuum.2026.115172","DOIUrl":"10.1016/j.vacuum.2026.115172","url":null,"abstract":"<div><div>To meet the multi-functional requirements of aluminum alloys for liquid cooling plates in new energy vehicles, including high strength, excellent corrosion resistance, and good brazability, a novel 4045/1050MOD/6xxx/1050MOD four-layer cladding aluminum alloy was designed and fabricated. The microstructural evolution, mechanical properties, and corrosion behavior in SWAAT salt spray environment were systematically investigated after brazing (600 °C × 10 min) followed by various artificial and natural aging treatments. Results demonstrate that specimens subjected to post-brazing artificial aging at 200 °C for 2 h achieved ultimate tensile strength and yield strength of 252 MPa and 214 MPa, respectively, representing increases of 150% and 330% compared to the O-temper condition, and significantly superior performance to natural aging and traditional 3xxx series cladding aluminum alloys. Microstructural analysis revealed that the 1050MOD interlayer effectively suppressed the diffusion of Mg towards the surface, and its coarse and elongated grain structure helped mitigate the tendency for melting erosion induced by the inward diffusion of Si. After 56 days of SWAAT salt spray testing, the corrosion depth ratio was only 41.7%. The interlayer, acting as a sacrificial anode, exhibited typical laminar corrosion characteristics, effectively retarding the inward propagation of pitting corrosion towards the core material. This study provides a theoretical basis and structural design reference for the application of high-strength, high-corrosion-resistant multi-layer cladding aluminum alloys in the thermal management systems of new energy vehicles.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115172"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Design of a novel intersecting-axis meshing Quimby-tooth dry screw vacuum pump 一种新型交叉轴啮合昆比齿干式螺杆泵的设计

IF 3.9 2区材料科学

Vacuum Pub Date : 2026-04-01 Epub Date: 2026-01-19 DOI: 10.1016/j.vacuum.2026.115121

Dantong Li, Xiaoqian Chen, Kai Ma, Chongzhou Sun, Zhilong He, Chuang Wang, Ziwen Xing

{"title":"Design of a novel intersecting-axis meshing Quimby-tooth dry screw vacuum pump","authors":"Dantong Li, Xiaoqian Chen, Kai Ma, Chongzhou Sun, Zhilong He, Chuang Wang, Ziwen Xing","doi":"10.1016/j.vacuum.2026.115121","DOIUrl":"10.1016/j.vacuum.2026.115121","url":null,"abstract":"<div><div>A novel intersecting-axis meshing Quimby-tooth dry screw vacuum pump was proposed in this paper. The mathematical model for generating the geometric structure of intersecting-axis meshing Quimby-tooth screw rotors is established, alongside a geometric characteristic calculation model for this novel screw structure. Two basic design methods for the intersecting-axis meshing Quimby-tooth screw structure are proposed, and their geometric characteristics are analyzed by comparing them with conventional parallel-axis meshing screw rotors, thus revealing the technical potential of this new technology. The proposed geometry generation model is verified by fabricating a prototype of the intersecting-axis meshing screw vacuum pump via 3D printing, while the geometric characteristic analysis model is validated using commercial software. Research results show that intersecting-axis meshing technology can reduce rotor volume by 24 %, leakage channel length by 32 %, and gear meshing velocity by 44.5 %. This study provides fundamental references and insights for the development of next-generation dry screw vacuum pumps, further advancing progress in vacuum acquisition fields.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"247 ","pages":"Article 115121"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

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