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| 1 | DEVELOPMENT OF POLYMER MINERAL COMPOSITE AND ITS DAMPING PROPERTY显示文摘The principle of production of polymer mineral composite was analyzed. Property parameters and the procedure for producing PMC components were also given. Damping property and principle of vibration absorption of polymer mineral composite were also investigated. Reduced experiment was conducted for two jigs which are similar in structure only different in material that one made of PMC the other made of casting iron to test their dynamic characteristic. | J.Sun 1) ,J.F.Li 2) ,B.J.Lu 1) ,J.F.Zhong 3) and X.P. Huang 1) 1) Dept. of Agri. Eng., Laiyang Agriculture College, Laiyang 265200,China 2) Dep. of Mech. Eng., Shandong University of Technology, Jinan 250061,China 3) Agruculture S | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 23 |
| 2 | ELECTROCHEMICAL NOISE FEATURES OF PURE ALUMINUM DURING PITTING CORROSION IN NEUTRAL NaCl SOLUTION显示文摘Spontaneous electrochemical noise (EN) can be a rich source of information concern-ing the processes simultaneously occurring at a corroding interface. Potential noisefluctuations during the free corrosion of pure aluminum in different concentration ofneutral sodium chloride solution are investigated, and the breakdown and restorationof passive metal's film are studied using potentiodynamic scanning (PDS) measure-ments and electrochemical impedance spectroscopy (EIS) technique. Two capacitanceloops are observed in the Nyquist plots in two kinds of concentration, and the corro-sion process is under activation control at first, then become diffusion control withinthe oxide film and corrosion products of (Al(OH)p-m Cl-m) accumulated on the surfaceof the corroding electrode. It is suggested that the pitting corrosion is much easierto occur for pure aluminum in 7.0wt% than in 2.0wt% NaCl solution, and the highconcentration of chloride ion in solution inhibits the repassivation of a metastable pit.The corrosion rate deterministic step does not involve Cl-. | F.H.Cao Z.Zhang Y.L.Cheng J.F.Li J.Q.Zhang J.M.Wang C.N.Cao | 2003 | Acta Metallurgica Sinica(English Letters)2003，16，1： | 3 |
| 3 | ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY DURING CORROSION PROCESS OF 8090 Al-Li ALLOY IN EXCO SOLUTION显示文摘The corrosion behavior and electrochemical impedance spectroscopy (EIS) features of 8090 Al-Li alloys in EXCO solution were investigated, and the EIS was simulated using an equivalent circuit. At the beginning of immersion in EXCO solution, the EIS is comprised by a depressed capacitive arc at high-mediate frequency and an inductive arc at low frequency, and the inductive component decreases and disappears with im- mersion time. Once exfoliation or severe pitting corrosion is produced, two capacitive arcs appear in the EIS. These two capacitive arcs are originated from the two parts of the corroded alloy surface, the original flat alloy surface and the new inter-face exposed to the aggressive EXCO solution due to the exfoliation or pitting corrosion. Some corrosion development features of 8090 Al-Li alloys in EXCO solution can be obtained through simulated EIS information. | J.F.Li Z.Q.Zheng C.Y.Tan S.C.Li Z.Zhang J.Q.Zhang | 2004 | Acta Metallurgica Sinica(English Letters)2004，17，6： | 2 |
| 4 | ELECTROCHEMICAL FEATURES DURING PITTING CORROSION OF LY12 ALUMINUM ALLOY IN DIFFERENT NEUTRAL SOLUTIONS显示文摘The electrochemical features of commercial airframe material, Al alloy LY12, in 0. 349mol/L neutral sodium chloride (NaCl) and sodium sulfate (Na2SO4) solutions were investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. The microstructure of the as-tested samples was studied by scanning electron microscopy. The results show that the Nyquist plots of LY12 at different immersion time displayed different fe atures, indicating that the Cl- ions elevate the corrosion rate and inhibit the repassivation of a metastable pit. It also shows that the corrosion product of LY12 formed in SO2-4 solution isn't easy to dissolve, and it will cover the surface of working electrode in the electrolyte. SEM images indicate that the corrosion apparent area and pit number of LY12 in NaCl solution are greater than that in Na2SO4 solution. | Y.L.Cheng J.F.Li J.Q.Zhang C.N.Cao F.H.Cao Z.Zhanq | 2003 | Acta Metallurgica Sinica(English Letters)2003，16，4： | 2 |
| 5 | The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite显示文摘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 27.In this paper,we introduce the design and on-ground test results of the LEIA instrument.Using 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 realized.An 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 detectors.The 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 view.The 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 observation.The total weight of LEIA is 56 kg and the power is 85 W.The satellite,with a design lifetime of 2 yr,operates in a Sun-synchronous orbit of 500 km with an orbital period of 95 minutes.LEIA 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 parameters.In 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. | 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 | 2023 | Research in Astronomy and Astrophysics2023，23，9： | 2 |
| 6 | Phase Selection in Solidi?cation of Undercooled Co–B Alloys显示文摘A series Co-(18.5–20.7) at.% B melts encompassing the eutectic composition(Co81.5B18.5) were solidi?ed at different degrees of undercooling. It is found that the metastable Co23B6 phase solidi?es as a substitute for the stable Co3 B phase in the alloy melts undercooled above a critical undercooling value of ~60 K.The Co23B6 and α-Co phases make up a metastable eutectic. The corresponding eutectic composition and temperature are Co80.4B19.6 and 1343 K, respectively. On exposure of the metastable Co23B6 phase at a given temperature above 1208 K, it does not decompose even after several hours. But it transforms by a eutectoid reaction to α-Co + Co3 B at lower temperature. | X.X.Wei W.Xu J.L.Kang M.Ferry J.F.Li | 2017 | Journal of Materials Science & Technology2017，33，4： | 2 |
| 7 | 查看详情显示文摘 | J.Y.Zhai J.F.Li S.X.Dong D.Viehland and M.I.Bichurin | | 0，，12： | 1 |
| 8 | Solidification structure formation in undercooled Fe-Ni alloy显示文摘 | J.F.Li W.Q.Jie G.C.Yang Y.H.Zhou | | 0，，： | 1 |
| 9 | 查看详情显示文摘 | S.X.Dong J.Y.Zhai F.M.Bai J.F.Li D.Viehland and T.A.Lograsso | | 0，，10： | 1 |
| 10 | 查看详情显示文摘 | N.Wang J.Cheng A.Pyatakov A.K.Zvezdin J.F.Li L.E.Cross and D.Viehland | | 0，，10： | 1 |
| 11 | Preparation of CuS nanoparticles embedded in poly(vinyl alcohol)nanofibre via electrospinning显示文摘 | J.Xu X.J.Cui J.F.Li | | 0，，02： | 1 |
| 12 | 查看详情显示文摘 | S.P.Gong J.F.Li H.X.Baoyin | | 0，，： | 1 |
| 13 | 查看详情显示文摘 | S.P.Gong H.X.Baoyin J.F.Li | | 0，，： | 1 |
| 14 | SOLIDIFICATION MECHANISM OF UNDERCOOLEDSINGLE PHASE ALLOYS显示文摘The solidification behavior of bulk undercooled Ni50Cu50 alloy was systematically investigated. Double recalescences were discovered for the first time in a single phase Ni-Cd alloy, in which there is no solid phase transition at elevated temperature. When the alloy melt was undercoolcd below the solidus temperature, the effect of nonequilibrium solidification could make the solid with the norminal composition C0 of the alloy nucleate and grow till tempemture approached To (the temperuture at which the free enengies of solid and liquid with C0 are equal). Following it, the nucleation and growth of the solid with more high melting point component were required, so the secondary recalescence took place. The concentration distribution in crystals was also analysed. | J.F.Li G.C.Yang Y.H.Zhou | 1998 | Acta Metallurgica Sinica(English Letters)1998，11，2： | 0 |
| 15 | Synthesis and Fluorescence Spectrum of a Novel Pyrazoline Derivative显示文摘1 Results 2-pyrazolines and carbaozole derivatives are well known fluorescent compounds with high quantum yields[1],and have been investigated in many other respects[2,3].In this paper,carbazole radical was introduced to pyrazoline ring on C-5,and a novel derivative,named 1-phenyl-3-biphenyl-5-(N-ethyl carbazole-3-yl)-2-pyrazoline (PBEP) (5) was synthesized: The product PBEP was characterized by IR,1H NMR,and elementary analysis.Yield: 47.2%.M.P 104-106 ℃.1H NMR (CDCl3) δ/10-6: 1.5(3H,—CH3).2.4(2H,—... | X.Y.Han J.F.Li P.H.Lin D.X.Li C.Dong | 2007 | 复旦学报(自然科学版)2007，46，5： | 0 |
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