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| 1 | Correlation Between Microstructure and Corrosion Behavior of Two 90Cu10Ni Alloy Tubes显示文摘Two kinds of 90Cu10 Ni tubes with different service lives(more than 3 years and only 1 year,respectively)under identical working conditions were studied by an immersion test in a 3.5 wt% NaCl solution and the electron backscattered diffraction(EBSD) technique.The morphology after immersion showed severer corrosion attack at the grain boundaries of the tube with shorter service life compared with the tube with longer service life.The grain boundary characterization distributions(GBCDs) of the two tubes obtained by EBSD revealed more Σ3 boundaries and twins,and larger random boundary meshes in the tube with longer service life.A short immersion test in a modified Livingston's solution was conducted to evaluate the tendency to corrosion attack of different types of the grain boundaries.SEM and AFM were used to characterize the corrosion morphologies of the boundaries.A strong correlation between varying depths of corrosion grooves and types of the grain boundaries was obtained.The influence of deviation angle of low Σ boundaries on corrosion resistance of the grain boundaries was also discussed.It is concluded that a special ‘‘grain boundary engineering''(GBE) treatment has been performed on the tube with longer service life.It is proposed that the optimized GBCD is responsible for the better service performance of the tube. | Aili Ma Shengli Jiang Yugui Zheng Zhiming Yao Wei Ke Shuang Xia | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，4： | 4 |
| 2 | Cavitation Erosion Corrosion Behaviour of Manganese-nickel-aluminum Bronze in Comparison with Manganese-brass显示文摘The cavitation erosion corrosion behaviour of ZQMn12-8-3-2 manganese-nickel-aluminum bronze and ZHMn55-3-1 manganese-brass was investigated by mass loss, electrochemical measurements (polarization curves and electrochemical impedance spectroscopy) and the cavitation damaged surfaces were observed by scanning electron microscopy (SEM). The results showed that ZQMn12-8-3-2 had better cavitation erosion resistance than ZHMn55-3-1. After the cavitation erosion for 6 h, the cumulative mass loss of ZQMn12-8-3-2 was about 1/3 that of ZHMn55-3-1. The corrosion current density of ZQMn12-8-3-2 was less than that of ZHMn55-3-1 under both static and cavitaiton condition. The free-corrosion potentials of ZQMn12-8-3-2 and ZHMn55-3-1 were all shifted in positive direction under cavitation condition compared to static condition. In the total cumulative mass loss under cavitation condition, the pure erosion played a key role for the two tested materials (74% for ZHMn55-3-1 and 60% for ZQMn12-8-3-2), and the total synergism between corrosion and erosion of ZQMn12-8-3-2 (39%) was larger than that of ZHMn55-3-1 (23%). The high cavitation erosion resistance of ZQMn12-8-3-2 was mainly attributed to its lower stacking fault energy (SFE), the higher microhardness and work-hardening ability as well as the favorable propagation of cavitation cracks for ZQMn12-8-3-2, i.e., parallel to the surface rather than perpendicular to the surface for ZHMn55-3-1. | Hong Yu Yugui Zheng Zhiming Yao | 2009 | Journal of Materials Science & Technology2009，25，6： | 3 |
| 3 | Three-dimensional topological insulators:A review on host materials显示文摘In recent years,three-dimensional topological insulators(3DTI) as a novel state of quantum matter have become a hot topic in the fields of condensed matter physics and materials sciences.To fulfill many spectacularly novel quantum phenomena predicted in 3DTI,real host materials are of crucial importance.In this review paper,we first introduce general methods of searching for new 3DTI based on the density-functional theory.Then,we review the recent progress on materials realization of 3DTI including simple elements,binary compounds,ternary compounds,and quaternary compounds.In these potential host materials,some of them have already been confirmed by experiments while the others are not yet.The 3DTI discussed here does not contain the materials with strong electron-electron correlation.Lastly,we give a brief summary and some outlooks in further studies. | FENG WanXiang YAO YuGui | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，12： | 2 |
| 4 | Cavitation Erosion Behavior of CrMnN Duplex Stainless Steel in Distilled Water and 3% NaCl Solution显示文摘The cavitation erosion (CE) behavior of CrMnN ferrite-austenite duplex stainless steel in distilled water and 3% NaCl solution was investigated by using a magnetostrictive-induced CE facility. The damaged surfaces were observed by scanning electron microscope (SEM). It was found that the CE resistance of CrMnN steel was higher than that of 0Cr13Ni5Mo steel. The mass loss rate of CrMnN steel in distilled water was similar to that in 3% NaCl except at the early stage of CE. The failure mode of ferrite phase was brittle fracture, which had adverse effect on the resistance to CE, while the failure of austenite phase was a ductile failure in CrMnN steel. The excellent resistance to CE was related to the good mechanical properties of austenitic phase and the consumption of CE energy by plastic deformation involving slip and twinning. | Suzhen LUO, Yugui ZHENG, Wei LIU, Heming JING, Zhiming YAO and Wei KEState Key Laboratory for Corrosion and Protection, Institute of Metai Research, Chinese Academy of Sciences, Shenyang 110016, China | 2003 | Journal of Materials Science & Technology2003，19，4： | 1 |
| 5 | Erosion corrosion resistant alloy development for aggressive slurry flows 显示文摘 | ZHENG Yugui YAO Zhiming KE Wei | 2000 | Materials Letters2000，46，： | 1 |
| 6 | Weakened interlayer coupling in two-dimensional MoSe2 flakes with screw dislocations显示文摘The screw dislocations are intriguing defects that are often observed in natural and artificial materials. The dislocation spirals break the reflection and inversion symmetries of the lattices and modify the interlayer coupling in layer-structured materials, inducing additional complexity in layer stacking and thus novel properties in materials. Here, we report on the interlayer coupling of two-dimensional (2D) MoSe2 flakes with screw dislocations by atomic force microscopy (AFM), Raman spectra and photoluminescence (PL) spectra. By controlling the supersaturation conditions, 2D MoSe2 flakes with screw dislocations are grown on amorphous SiO2 substrates by chemical vapor deposition (CVD). AFM measurements reveal that the interlayer spacing in such 2D MoSe2 flakes with screw dislocation is slightly widened with respect to the normal AA- or AB-stacked ones due to the presence of the screw dislocations. Raman and PL spectra show that the interlayer coupling is weaker and thus the band gap is wider than that in the normal AA- or AB-stacked ones. Our work demonstrates that the interlayer coupling of 2D transition metal dichalcogenides (TMDCs) flakes can be tuned by the induction of screw dislocations, which is very helpful for developing novel catalysts and electronic devices. | Xiangzhuo Wang Huixia Yang Rong Yang Qinsheng Wang Jingchuan Zheng Lu Qiao Xianglin Peng Yongkai Li Dongyun Chen Xiaolu Xiong Junxi Duan Guangyu Zhang Jie Ma Junfeng Han Wende Xiao Yugui Yao | 2019 | Nano Research2019，12，8： | 1 |
| 7 | The synergistic effect between erosion and corrosion in acidic slurry medium 显示文摘 | Zheng Yugui Yao Zhiming Wei Xiangyun | 1995 | Wear1995，，： | 1 |
| 8 | Controlling global stochastieity in the standard map显示文摘 | Ying Zhang Yugui Yao | 2000 | Physical Review E2000，61，72： | 1 |
| 9 | The synergistic effect between erosion and corrosion in acidic slurry media显示文摘 | ZHENG Yugui YAO Zhiming WEI Xiangyun | 1995 | Wear1995，，6： | 1 |
| 10 | The synergistic effect between erosion and corrosion in acidic slurry medium显示文摘 | ZHENG Yugui YAO Zhiming WEI Xiangyun | 1995 | Wear1995，，： | 1 |
| 11 | The synergistic effect between erosion and corrosion in acidic slurry medium显示文摘 | Zheng Yugui Yao Zhiming Wei Xiangyun | 1995 | Wear1995，，186187： | 1 |
| 12 | Erosion–corrosion of various oil-refining materials in naphthenic acid显示文摘 | Xinqiang Wu Heming Jing Yugui Zheng Zhiming Yao Wei Ke | 2003 | Wear2003，，1： | 1 |
| 13 | Controlling global stochasticity in the standard map显示文摘 | Zhang Ying Yao Yugui | 2000 | Phys Rev2000，61，： | 1 |
| 14 | Controlling Hamiltonian chaos by adaptive integrable mode coupling 显示文摘 | Zhang Ying Chen Shigang Yao Yugui | 2000 | Phys Rev2000，62，： | 1 |
| 15 | Type-II topological metals显示文摘Topological metals(TMs)are a kind of special metallic materials,which feature nontrivial band Cross-ings near the Fermi energy,giving rise to peculiar quasiparticle excitations.TMs can be classified based on the characteristics of these band crossings.For example,according to the dimensionality of the crossing,TMs can be classifed into nodal-point,nodal-line,and nodal-surface metals.Another important property is the type of dispersion.According to degree of the tilt of the local dispersion around the crossing,we have typeI and type-II dispersions.This leads to significant distinctions in the physical properties of the materials,owing to their contrasting Fermi surface topologies.In this article,we briefly review the recent advances in this research direction,focusing on the concepts,the physical properties,and the material realizations of the type-Il nodal-point and nodal-line TMs. | Si Li Zhi-Ming Yu Yugui Yao Shengyuan A.Yang | 2020 | Frontiers of physics2020，15，4： | 0 |
| 16 | Recent progress in 2D group-V elemental monolayers:fabrications and properties显示文摘A large number of two-dimensional(2D)monoelemental materials with huge application potentials have been developed,since graphene was reported as a monoelemental material with unique properties.As cousins of graphene,2D group-V elemental monolayers have gained tremendous interest due to their electronic properties with significant fundamental bandgap.In this review,we extensively summarize the latest theoretical and experimental progress in group-V monoelemental materials,including the latest fabrication methods,the properties and potential applications of these 2D monoelementals.We also give a perspective of the challenges and opportunities of 2D monoelemental group-V monolayer materials and related functional nanodevices. | Peiwen Yuan Teng Zhang Jiatao Sun Liwei Liu Yugui Yao Yeliang Wang | 2020 | Journal of Semiconductors2020，41，8： | 0 |
| 17 | Sign-reversible valley-dependent Berry phase effects in 2D valley-half-semiconductors显示文摘Manipulating valley-dependent Berry phase effects provides remarkable opportunities for both fundamental research and practical applications.Here,by referring to effective model analysis,we propose a general scheme for realizing topological magneto-valley phase transitions.More importantly,by using valley-half-semiconducting VSi2N4 as an outstanding example,we investigate sign change of valley-dependent Berry phase effects which drive the change-in-sign valley anomalous transport characteristics via external means such as biaxial strain,electric field,and correlation effects.As a result,this gives rise to quantized versions of valley anomalous transport phenomena.Our findings not only uncover a general framework to control valley degree of freedom,but also motivate further research in the direction of multifunctional quantum devices in valleytronics and spintronics. | Xiaodong Zhou Run-Wu Zhang Zeying Zhang Wanxiang Feng Yuriy Mokrousov Yugui Yao | 2021 | npj Computational Materials2021，，1： | 0 |
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