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PLASMA SURFACE ALLOyING OF AGE-HIGH SPEED STEEL

Acta Metallurgica Sinica(English Letters) 1999年第5期12卷 836-840页

作者： Z.H.Li,X.P.Liu,y.gao and Z.Xu Research Institute of Surface Engineering, Taiyuan University of Technology,Taiyuan 030024, China

It, ageing high speed steel (AHSS) with high cobalt, has a strong ability of age hardening. However, it has two disadvantages, One is short of toughness, the other is its high price because of its too much alloy content especially cobalt. All of these effect on its widespread using. Now there is a new method without the two flows to form this steel in the surface of ingot iron by use of double glow plasma surface alloying *** this paper, the following three parts are introduced: the metallurgical process of this surface ageing high speed steel (SAHSS), the micro structure of the alloying layer, the alloy distribution in the layer. By using the designed source pole, the special alloying process, the required surface alloying content, just like the AHSS—Co23W11Mo7 can be achieved in the surface layer. This new method has wide prospect in the fields of tools, moulds and other wear resisting fields.

关键词： SAHSS metallurgical process age hardening

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Cryptoexplosion: genetic mechanism of earthquake

Cryptoexplosion: genetic mechanism of earthquake

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第十八届中国高压科学学术会议

作者： Jianguo Du C.Xie F.Sun y.Cui y.Ma J.Li M.Zhou y.gao CEA Key Laboratory of Earthquake Prediction (Institute of Earthquake Science) China Earthquake Administration Department of Mechanical Engineering Texas Tech University Center for High Pressure Science & Technology Advanced Research State Key Laboratory for Superhard Materials College of Physics Jilin University Institute of Disaster Prevention

The genetic mechanism of earthquakes still remains puzzling even though many genetic models of earthquakes have been *** and more cryptoexplosive breccias(CBs)found widely in the world indicat that cryptoexplosion(explosion or detonation within the crust and upper mantle)is ubiquitous,which is not only related to the metallogeny of metals,but more importantly to the generation of *** the dynamical relationship between earthquake generation and cryptoexplosion was discussed based on the data of CBs found at 174 sites in China,139 of which were dated in the yanshanian period,28 in Preyanshanian and 7 in the Himalayan *** CBs,related to the large faults in the orogenic zones,are characterized by angular fragments with grain sizes from less than millimeter to several meters,network and jigsaw *** can be inferred that fluids derived from the lower mantle or deeper can accumulate at various points during upwardmigration where superpressure can be achieved and explosion can occur when the fluid pressure exceeds the threshold of hydrostatic pressure of overlaid rocks and tensile strength of the host *** geological evidence demonstrates that the endogenic breccias were generated by prevailing cryptoexplosions that created seismic waves and shocked the ground through geological *** geological processes never end as magmatic and volcanicactivities ***,cryptoexplosion can be ascribed as the fundamental mechanism of earthquake generation.

关键词： Cryptoexplosive breccia Paleoearthquake Genetic mechanism Deep fluids Energy

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Characteristics of Water Exchange in Taihu Lake of China

Characteristics of Water Exchange in Taihu Lake of China

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第六届国际流体力学会议

作者： y.gao Q.Q.Liu Lab.of Environmental Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China

Water exchange is an important hydrodynamic character for the study of the environmental capacity of large water *** enhanced understanding and better characterization of the exchange ability has fundamental significance in studying the transport of contamination and the eutrophication of large shallow *** this research,a relation matrix is set up to describe the characteristics of water exchange in Taihu *** Taihu Lake is divided into five areas and the effect of seasonal wind is taken into *** half-exchange time of the lake water and the relation matrix are calculated to describe the characteristics of water exchange.

关键词： water exchange relation matrix half-exchange time water quality model Taihu Lake

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心脏MR T1-mapping技术评估T2DM病人心肌纤维化程度:与左心室纵向舒张功能障碍的相关性

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国际医学放射学杂志 2023年第1期46卷 116-117页

作者： X.Liu y.gao y.K.Guo C.C.Xia R.Shi L.Jiang 吴昊

摘要目的应用心脏MR (CMR)T1mapping技术评估2型糖尿病(T2DM)病人的心肌纤维化程度,并探讨左心室(LV)亚临床心肌功能障碍与心肌纤维化之间的相关性。方法

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Comparison of Quadrupole,Hexapole and Octopole Collision Cell:SlMION Analysis and Experimental Demonstration

Comparison of Quadrupole,Hexapole and Octopole Collision Cel...

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第三十五届国际光谱会议

作者： Q.yu y.gao X.y.Tian D.Peng J.He W.Hang~* Department of Chemistry and Department of Mechanical and Electrical Engineering Xiamen University Xiamen 361005 China

＜正＞Different multipole collision cells have been widely used in current mass spectrometry for their outstanding performances in transmission and cooling *** them, radio frequency（rf）-only quadrupole,hexapole,and octopole are routinely used in practical *** of their performances has been carried out using an in-house built electrospray time-of-flight mass spectrometry（ESI-TOFMS）,equipped with changable multipole ***-written program has also been developed by SIMION

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High performance of(KxNa1-x)0.98Li0.02(Nb0.82-yTa0.18Sby)O3 Lead-free piezoelectric ceramics

High performance of(KxNa1-x)0.98Li0.02(Nb0.82-yTa0.18Sby)O3 ...

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2011年全国压电和声波理论及器件应用研讨会

作者： y.gao,J.L.Zhang,~* F.Q.Guo,y.L.Qing and C.L.Wang School of Physics,State Key Laboratory of Crystal Materials.Shandong University,Jinan,P.R.China

Lead-free piezoelectric materials that can replace the current Pb(Zr,Ti)03-based piezoelectric ceramics have attracted much attention in recent years from the viewpoint of environmental *** this presentation,we will report the study result obtained in a series of(KNaLi(NbTaSb)O ceramics,which are prepared by the conventional solid-state reaction *** has been found that crystalline structure changes from orthorhombic

关键词： (K,Na)NbO3-based ceramics Phase coexistence Piezoelectric properties Temperature stability

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Synchrotron XAFS and SAXS studies of Ti-V-Cr hydrogen absorbing alloy

Synchrotron XAFS and SAXS studies of Ti-V-Cr hydrogen absorb...

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第九届全国氢能学术会议

作者： X.Ju~1,C.B.Wan~1,y.Qi~1,J.Qiu~1,y Xin~1,y.gao~1,S.M.Wang~2,X.P.Liu~2,L.J.Jiang~2 ~1 University of Science and technology Beijing,China ~2 General Research Institute for Nonferrous Metals,China

＜正＞Vanadium-based alloys with BCC structure had high hydrogen storage capacities,good kinetics,and absorb/desorb hydrogen at room ***-based solid solution alloys were widely concerned especially for V-Ti-Cr alloys....

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Planetary wave-type oscillations in the ionosphere and their relationship to mesospheric/lower thermospheric *** disturbances at Wuhan(30.61N,114.51E)

Planetary wave-type oscillations in the ionosphere and their...

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中国科学院地质与地球物理研究所2006学术年会

作者： J.Xiong~(a,_),W.Wan~a,B.Ning~a,L.Liu~a,y.gao~b a Institute of Geology and Geophysics,The Chinese Academy of Sciences,P.O.Box 9825,Beijing 100029,PR China b Institute of Geophysics,China Seismological Bureau,Beijing,PR China

Using wind,ionospheric and geomagnetic intensity data observed simultaneously at Wuhan(30.61N,114.51E) in 2002 and 2003,planetary wave type oscillations(PWTO) in the ionosphere and their relationship with oscillations in the mesosphere/lower thermosphere(MLT) and geomagnetic intensity have been *** cases of 2- and 5-day oscillations in the ionosphere are analyzed to distinguish MLT drivers and geomagnetic *** geomagnetic oscillations are the most important drivers for the PWTO with dominant periods of 5-,10-, *** the planetary waves in MLT winds are the main drivers for the quasi-2-day oscillations in the *** correlation coefficient of the occurrence rates of the 2-day oscillation in winds and in ionospheric f0F2 is 0.82 for the data from February to *** oscillations in the geomagnetic intensity can drive 30-50%of 5-,10- and 13.5-day PWTO events in the *** we evaluate all of the possible events driven by geomagnetic oscillations, more than 70%of the events have a relationship with geomagnetic oscillations with 5- and 10-day *** 39.7 h PWTO in ionospheric plasma frequencies observed from day 161 to 166 in 2002,are generated by an upward propagating wave with period 43.8 *** events of 6-day oscillations in the ionosphere observed during May to July in 2003,have different *** first one is probably generated by 5.4-day upward propagating waves in MLT winds,but enhanced during a moderate geomagnetic *** second one is generated by the geomagnetic oscillations during a strong geomagnetic storm,r 2005 Elsevier *** rights reserved.

关键词： Planetary wave Ionosphere Mesosphere and lower thermosphere

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An efficient magneto-optical trap of metastable krypton atoms

An efficient magneto-optical trap of metastable krypton atom...

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第十六届全国原子与分子物理学术会议

作者： C.-F.Cheng,W.Jiang,G-M.yang,y.-R.Sun,H.Pan,y.gao,A.-W.Liu,and S.-M.Hu Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics,University of Science and Technology of China,Hefei.230026 China

We report a magneto-optical trap of metastable krypton atoms with a trap loading rate of 3×10 atoms/s and a trap capture efficiency of 3×*** system starts with an atomic beam of metastable krypton produced in a liqu...

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The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite

引用

Research in Astronomy and Astrophysics 2023年第9期23卷 66-78页

作者： Z.X.Ling X.J.Sun C.Zhang S.L.Sun G.Jin S.N.Zhang X.F.Zhang J.B.Chang F.S.Chen y.F.Chen Z.W.Cheng W.Fu y.X.Han H.Li J.F.Li y.Li Z.D.Li P.R.Liu y.H.Lv X.H.Ma y.J.Tang C.B.Wang R.J.Xie y.L.Xue A.L.yan Q.Zhang C.y.Bao H.B.Cai H.Q.Cheng C.Z.Cui y.F.Dai D.W.Fan H.B.Hu J.W.Hu M.H.Huang Z.Q.Jia C.C.Jin D.y.Li J.Q.Li H.y.Liu M.J.Liu y.Liu H.W.Pan y.L.Qiu M.Sugizaki H.Sun W.X.Wang y.L.Wang Q.y.Wu X.P.Xu y.F.Xu H.N.yang X.yang B.Zhang M.Zhang W.D.Zhang Z.Zhang D.H.Zhao X.Q.Cong B.W.Jiang L.H.Li X.B.Qiu J.N.Sun D.T.Su J.Wang C.Wu Z.Xu X.M.yang S.K.Zhang Z.Zhang N.Zhang y.F.Zhu H.y.Ban X.Z.Bi Z.M.Cai W.Chen X.Chen y.H.Chen y.Cui X.L.Duan Z.G Feng y.gao J.W.He T.He J.J.Huang F.Li J.S.Li T.J.Li T.T.Li H.Q.Liu L.Liu R.Liu S.Liu N.Meng Q.Shi A.T.Sun y.M.Wang y.B.Wang H.C.Wu D.X Xu y.Q yang y.yang X.S.yu K.X.Zhang y.L.Zhang y.H.Zhang y.T.Zhang H.Zhou X.C.Zhu J.S.Cheng L.Qin L.Wang Q.L.Wang M.Bai R.L.gao Z.Ji y.R.Liu F.L.Ma y.J.Shi J.Su y.y.Tan J.Z.Tong H.T.Xu C.B.Xue G.F.Xue W.yuan National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083China North Night Vision Technology Co. LTDNanjing 211106China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Science and Technology on Low-Light-Level Night Vision Laboratory Xi'an 710065China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201204China Institute of Electrical Engineering Chinese Academy of ScienceBeijing 100190China National Space Science Center Chinese Academy of ScienceBeijing 100190China

The Lobster Eye Imager for Astronomy(LEIA),a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe mission,was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on2022 July *** this paper,we introduce the design and on-ground test results of the LEIA *** stateof-the-art Micro-Pore Optics(MPO),a wide field of view of 346 square degrees(18.6°×18.6°)of the X-ray imager is *** optical assembly composed of 36 MPO chips is used to focus incident X-ray photons,and four large-format complementary metal-oxide semiconductor(CMOS)sensors,each of size 6 cm×6 cm,are used as the focal plane *** instrument has an angular resolution of 4’-8’(in terms of FWHM)for the central focal spot of the point-spread function,and an effective area of 2-3 cm^(2) at 1 keV in essentially all the directions within the field of *** detection passband is 0.5-4 keV in soft X-rays and the sensitivity is2-3×10^(-11) erg s^(-1) cm^(-2)(about 1 milliCrab)with a 1000 s *** total weight of LEIA is 56 kg and the power is 85 *** satellite,with a design lifetime of 2 yr,operates in a Sun-synchronous orbit of 500 km with an orbital period of 95 *** is paving the way for future missions by verifying in flight the technologies of both novel focusing imaging optics and CMOS sensors for X-ray observation,and by optimizing the working setups of the instrumental *** addition,LEIA is able to carry out scientific observations to find new transients and to monitor known sources in the soft X-ray band,albeit with limited useful observing time available.

关键词： instrumentation detectors-space vehicles instruments-telescopes-X-rays genera

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