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Late veneer and the origins of volatiles of Earth 被引量:1
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作者 Chun-Hui Li 《Acta Geochimica》 EI CAS CSCD 2022年第4期650-664,共15页
Late veneer is an important paradigm in early Earth and planetary studies.It refers to the late addition of extraterrestrial materials to the Earth’s mantle after the core formation,which leads to the overabundances ... Late veneer is an important paradigm in early Earth and planetary studies.It refers to the late addition of extraterrestrial materials to the Earth’s mantle after the core formation,which leads to the overabundances of highly siderophile elements in the primitive upper mantle.In this review,the origin,evolution,and expansion of the late veneer hypothesis are summarized,including some unresolved problems.I hope this review would be helpful for the new entrants to this field. 展开更多
关键词 Highly siderophile elements Late veneer CHONDRITES Primitive mantle Core formation Volatile elements
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Theoretical Calculation of the Real Vapor Pressure of Al during ISM Processing of Ni-xAl (at.pct) (x=25-50) Alloy
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作者 Jingjie GUO,Guizhong LIU, Yanqing SU, Jun JIA and Hengzhi FUSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2004年第2期189-192,共4页
A new model was established to calculate the real vapor pressure of Al in the molten Ni-xAl (at.pct) (x=25;0) alloy. The effects of the holding time, chamber pressure, mole fraction of Al and melting temperature o... A new model was established to calculate the real vapor pressure of Al in the molten Ni-xAl (at.pct) (x=25;0) alloy. The effects of the holding time, chamber pressure, mole fraction of Al and melting temperature on the real vapor pressure of Al in the vacuum chamber were analyzed. Because of the impeding effect of the real vapor pressure on the evaporation loss rate, within a short time (less than 10 s), the real vapor pressure tends to a constant value. When the chamber pressure is less than the saturated vapor pressure of Al, the real vapor pressure of Al is equal to the chamber pressure. While when the chamber pressure is higher than the saturated vapor pressure, the real vapor pressure of Al approaches to the saturated vapor pressure of Al of the same condition. 展开更多
关键词 Real vapor pressure Volatile elements ISM process Ni-Al alloy
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