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RISS 인기검색어
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- 저자 : Sujuan Long (검색결과 3 건)
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THE EXTREMAL PROBLEM ON HUA DOMAIN
Sujuan Long 대한수학회 2017 대한수학회지 Vol.54 No.6
In this paper, we study the Carath\'{e}odory extremal problems on the Hua domain of the first three types. We give the explicit formula for the Carath\'{e}odory extremal problems between the first three types of Hua domain and the unit ball, which improves the works done on Hua domain and Cartan-egg domain and super-Cartan domain.
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THE EXTREMAL PROBLEM ON HUA DOMAIN
Long, Sujuan Korean Mathematical Society 2017 대한수학회지 Vol.54 No.6
In this paper, we study the $Carath{\acute{e}}odory$ extremal problems on the Hua domain of the first three types. We give the explicit formula for the $Carath{\acute{e}}odory$ extremal problems between the first three types of Hua domain and the unit ball, which improves the works done on Hua domain and Cartan-egg domain and super-Cartan domain.
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Effect of Al element in Zn-Al fillers on the corrosion resistance of Cu/Al brazed joints
Junlan Huang,Weimin Long,Sujuan Zhong 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.2
In this paper, we describe experimental torch welding 1061 aluminum alloy to T2 copper. The corrosion behavior and performance of Cu/Al brazed joints were systematically investigated. This investigation was conducted using an optical microscope (OM), scanning electron microscope (SEM), energy disperse spectroscopy (EDS) and other methodologies. The results showed that the corrosion resistance of brazed joints was closely associated with Al content in filler metal. The corrosion behavior in 3.5 % NaCl solution belonged to microelectrochemical corrosion and depended mainly on electrochemical imbalance between different phases. The excessive dissolution of Al atoms led to the occurrence of the corrosion of brazed joints and the corrosion product may be Al(OH) 3 , Zn(OH) 2 and ZnO. It can be also found that an increase of aluminum content controlled largely formation and distribution of α-Al phase and Al 2 O 3 protective film in brazing alloys, resulting in reducing the electrochemical corrosion current density and improving the corrosion resistance and shear strength of the joint.
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