Cu-Al-Mg合金的次级电子发射机理的探讨
MECHANISM OF SECONDARY ELECTRON EMISSION OF Cu-Al-Mg ALLOY
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摘要: 正 一、前言 Cu-Al-Mg合金是一种新型的次级电子发射材料。这种合金最大的优点是不用专门活化处理就具有优良的次级发射性能。 众所周知,金属的次级发射系数是比较低的,最高也只有1.8;氧化物则具有较高的次级发射系数,如MgO的发射系数可大于8。合金型次级发射体,如Cu-Be等经过专门
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Abstract: The slices of Cu-Al-Mg alloy with thickness of 0.1 mm are prepared. Some samples are respectively activated at the tempertures of 590℃ and 620℃. The seeondary emission factors () are determined. The composition of the surface and the electron binding-energy are studied by means of XPS and ABS. It is proved that the oxide layer consisting of Al2O3 and MgO can be formed naturally at room temperature. This oxide layer exhibits lower electron binding-energy, high and satisfactory stability. -
国外电子器件,1963年,第5期,第46页.[2]苏联专利,No 493831, 1982, 2.[3]潘奇汉,Cu-Al-Mg合金冷阴极材料研究报告,北京有色金属研究总院内部资料,1934.[4]北京师范大学,简明化学手册,北京出版社,1980,第126页.[5]东北工学院,无机物热力学数据,教学讲义,1978.[6]J. Dresner and B. Goldstein, J. Appl. Phys., 47 (1976), 1038. -
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