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非晶态Nd_4Fe_(77.5)(B_(1-x)C_x)_(18.5)合金的磁性和晶化

曹蕾 , 沈保根 , 杨林原 , 赵见高

金属学报

用急冷方法制备的Nd_4Fe_(77.5)(B_(1-x)C_x)_(18.5)合金带、当x<0.6时为非晶态,x>0.8时是晶态,表明用碳替代硼会使合金的非晶形成能力变差,分析了热处理样品中的晶化相组成。

关键词: Nd—Fe—B合金 , Curie temperature , magnetization temperature , crystallization temperature

衬底负偏压对溅射Ta₂O₅薄膜晶化温度及介电性能的影响

许仕龙 , 朱满康 , 黄安平 , 王波 , 严辉

无机材料学报

采用磁控溅射法,在衬底温度为620℃时,通过引入合适的衬底负偏压(100～200V),获得了结晶良好的Ta₂O₅薄膜,衬底负偏压增强了正离子对衬底表面的轰击作用,加速了其在衬底表面的松弛扩散效应,从而降低了Ta₂O₅薄膜的晶化温度,改善了其结晶性。同时,C—V测试结果表明:衬底负偏压进一步改善了Ta₂O₅薄膜的介电性能.

关键词: Ta₂O₅ , dielectric films , crystallization temperature , bias

EFFECT OF TRACE ELEMENTS WITH ZERO SELF-INTERACTION COEFFICIENT ON CRYSTALLIZATION TEMPERATURE OF IRON CARBON ALLOYS

ZHAI Qijie and HU Hanqi(Department of Foundry , University of Science and Technology Beijing , Beijing 100083 , China)Mannscript received 10 July 1995 , in revised form 5 April 1996

金属学报(英文版)

The effect of trace elements with zero self-interaction coefficient on crystallization temperature of iron carbon alloys was studied and the mathematic equation was developed based on thermodynamics in the present researeh. With the equation developed in this paper, the effects of nitrogen on crystallization temperature of Fe-3.45C-2.15Si0. 16Mn and Fe-3.45C-2. 15Si-0. 80Mn alloys were discussed.

关键词: : trace element , null , null , null

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