材料期刊网

LIQUIDUS OF Ag-Cu-Bi SYSTEM

LIU Shuqi SUN Wenqing Deptrtment of Chemistry , Peking University , Beijing , China[Originally published in ACTA METALL SIN (CHINESE EDN) 24 (5) 1988 pp B376—B378 , received 8 September 1987]

金属学报(英文版)

The diagram of Ag-Cu-Bi system was constructed from the investigation of 12 internal sec- tions by DTA heating as well as cooling curves in an atmosphere of dry N_2.The composi- tion of ternary eutectic point melting at 258℃ lies in Ag(5.0)-Cu(0.5)-Bi(94.5) at.-%.The liquiduses of Ag-Cu,Ag-Bi and Cu-Bi binaries were reinvestigated.

关键词: Ag-Cu-Bi ternary system , null

SURFACE STATE AND CATALYTIC ACTIVITY OF ACTIVATED AMORPHOUS Fe_(80)Zr_(12)B_8 ALLOY

WANG Xike SHEN Ningfu CHEN Haisong Zhengzhou Institute of Technology , Zhengzhou , ChinaZHANG Haifeng Luoyang Research Institute for Ship Materials , Luoyang , ChinaGU Haicheng Xi'an Jiaotong University , Xi'an , China Professor , Research Centre for Materials , Zhengzhou Institute of Technology , Zhengzhou 450002 , China

金属学报(英文版)

The depth profile of composition,chemical state of elements and morphology of as- received and activated amorphous Fe_(80)Zr_(12)B_8 alloy ribbons have been studied by means of Auger electron spectroscopy,X-ray photoelectron spectroscopy and scanning Auger microprobe combined with Ar ion bombardment.Both dull and free sides of the as- received ribbons were covered with an iron oxide layer.While a pronounced surface segregation and oxidation of B and precipitation of microcrystalline α-Fe particles were observed on both sides of activated ribbons,B and Zr were oxidized selectively in subsurface layer.On both sides of ribbons,a porous surface structure formed. The BET surface area was measured to be increasing from 0.11 to 2.68 m~2/g.The principal mechanism of in situ activation has been discussed.

关键词: amorphous Fe_(80)Zr_(12)B8 alloy , null , null , null

《金属学报》第23卷A辑1987年总目次

金属学报

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SWRM8螺栓帽头皱折分析

熊焰

物理测试

对一种SWRM8螺栓帽头皱折缺陷进行金相分析.结果表明:该皱折缺陷与SWRM8盘条表层存在的异常粗晶区相关.该异常粗晶区的形成与热轧终轧温度偏低和吐丝后温度过高、冷却缓慢有直接关系.为此,生产中应该严格控制轧制工艺,防止晶粒发生反常长大.

关键词: SWRM8螺栓 , 帽头皱折 , 粗晶长大

SWRM8螺栓帽头皱折分析

熊焰

物理测试

对一种SWRM8螺栓帽头皱折缺陷进行金相分析。结果表明：该皱折缺陷与SWRM8盘条表层存在的异常粗晶区相关。该异常粗晶区的形成与热轧终轧温度偏低和吐丝后温度过高、冷却缓慢有直接关系。为此，生产中应该严格控制轧制工艺，防止晶粒发生反常长大。

关键词: SWRM8螺栓 , blot head cap wrinkle , coarse grain growth

《金属学报》第23卷B辑1987年分类索引

金属学报

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《中国腐蚀与防护学报》1987—1988年主题索引

中国腐蚀与防护学报

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《金属学报》第23卷A辑1987年分类索引

金属学报

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《中国腐蚀与防护学报》1987—1988年总目录

中国腐蚀与防护学报

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Wetting behavior of molten In-Sn alloy on bulk amorphous and crystalline Cu40Zr44Al8Ag8

Applied Physics Letters

Using the sessile-drop method, the wettability of the molten In-Sn alloy on bulk amorphous and crystalline Cu40Zr44Al8Ag8 alloy was studied at different temperatures. It was found that the equilibrium contact angle of In-Sn alloy melt on bulk amorphous substrate was smaller than that of the crystalline one. An intermetallic compound existed at the interface of In-Sn alloy on amorphous Cu40Zr44Al8Ag8, while no intermediate reaction layer was formed at the interface of In-Sn alloy on crystalline Cu40Zr44Al8Ag8 in the temperature range studied. (C) 2007 American Institute of Physics.

关键词: al;dynamics;systems;glass