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| 1 | Microstructural Morphologies and Experimental Growth Laws during Solidification of Monotectic and Hypermonotectic Al-Pb Alloys显示文摘Al—Pb alloys with monotectic and hypermonotectic compositions were directionally solidified under unsteadystate heat flow conditions.The cooling curves recorded during solidification allowed solidification thermal parameters such as the cooling rate(T),growth rate(v) and thermal gradient(G) to be experimentally determined.Different microstructural patterns have been associated with the alloy solute content,i.e.,Al—1.2and 2.1 wt%Pb.A sequence of morphologies from the bottom to the top of the Al—1.2 wt%Pb alloy casting(monotectic) can be observed:Pb-rich droplets in the aluminum-rich matrix,followed by a region of microstructural transition formed by droplets and fibers and finally by a mixture of fibers and strings of pearls.A completely fibrous structure(without transition) has been observed along the entire Al—2.1 wt%Pb alloy casting(hypermonotectic).The interphase spacing(λ) was measured along the casting length,and experimental correlations between λ and experimental solidification thermal parameters have been established.Power laws with a —2.2 exponent expressing λ as a function of the growth rate,v,were found to better represent the fibrous growth of both Al—Pb alloys.Moreover,a single experimental law expressing λ as a function of both G and v was found to describe the fibrous growth of both the monotectic and the hypermonotectic alloys experimentally examined. | Adrina P.Silva Amauri Garcia José E.Spinelli | 2014 | Journal of Materials Science & Technology2014，30，4： | 2 |
| 2 | Biodegradation and biocon-version of cellulose wastes using bacterial and fungal cells immobilized in radiopoly merized hydrogels显示文摘 | Petre M Zarnea G Adrina P | 1999 | Re- sources Conservation and Recycling1999，5，： | 1 |
| 3 | Toxoplasma gondii homologue of plasmodium apical membrane antigen 1 is involved in invasion of host cells显示文摘 | ADRINA B H CHRISTINE L MICHAEL E G | 2000 | Infect Immun2000，68，12： | 1 |
| 4 | Matrix metalloproteinase and tissue -9 and tissue inhibitor of metalloproteinase- 3 are key regulator of extraeellular degradation by mouse embryos显示文摘 | Eliza JM Miehael MJ Adrina CH | 2001 | Biol Repord2001，64，： | 1 |
| 5 | Biodegradation and bio-conversion of cellulose wastes using bacterial and fungal-cells immobilized hydrogels显示文摘 | Peter M Zarnea G Adrina P | | 0，，5： | 1 |
| 6 | Biodegradation and bioconversion of cellulose wastes using bacterial and fungal cells immobilized bydrogels显示文摘 | Peter M Zamea G Adrina P | 1999 | Resources Conservation and Recycling1999，27，5： | 1 |
| 7 | Horizontally Solidified Al-3 wt%Cu-(0.5 wt%Mg)Alloys:Tailoring Thermal Parameters,Microstructure,Microhardness,and Corrosion Behavior显示文摘In the present experimental investigation,Al–3 wt%Cu and Al–3 wt%Cu–0.5 wt%Mg alloys castings are produced by a horizontal solidification technique with a view to examining the interrelationship among growth rate(GR),cooling rate(CR),secondary dendrite arm spacing(λ2),Vickers microhardness(HV),and corrosion behavior in a 0.5 M NaCl solution.The intermetallic phases of the as-solidified microstructures,that is,h-Al2Cu,S–Al2CuMg,and x-Al7Cu2 Fe,are subjected to a comprehensive characterization by using calculations provided by computational thermodynamics software,optical microscopy,and scanning electron microscopy/energy-dispersive spectroscopy.Moreover,electrochemical impedance spectroscopy and potentiodynamic polarization tests have been applied to analyze the corrosion performance of samples of both alloys castings.Hall–Petch-type equations are proposed to represent the HV dependence onλ2.It is shown that the addition of Mg to the Al–Cu alloy has led to a considerable increase in HV;however,the Al–Cu binary alloy is shown to have lower corrosion current density(icorr)as well as higher polarization resistance as compared to the corresponding results of the Al–Cu–Mg ternary alloy. | Andre Barros Clarissa Cruz Adrina P.Silva Noe Cheung Amauri Garcia Otavio Rocha Antonio Moreira | 2019 | Acta Metallurgica Sinica(English Letters)2019，32，6： | 0 |
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