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稀土元素镱活性极高,极易氧化,且蒸汽压很高,在钨铜、钨银合金的研究基础上对钨镱假合金进行了研究,通过前期对钨粉粒度、实验工艺等的优化后,采用冷等静压(200 MPa压力)压制烧结制备钨骨架,1000℃氢气还原预烧结、1800℃真空烧结,氩气气氛保护熔渗稀土镱制备钨镱合金,综合其密度,硬度等基本实验数据,分析了钨镱合金的组织。结果表明:制备出了高致密度的钨镱合金,钨镱合金密度为15.30.gcm-3,相对密度达到99.5%以上,硬度值低于HRB82,所制备的钨骨架其通道分布均匀,经熔渗法制备的钨镱合金中镱元素的分布呈现大面分布均匀,高倍状态下出现局部富集的情况,其富集情况与钨骨架通道分布情况相符合。所制备的钨镱合金能够满足特殊要求应用于配套材料。
The rare earth element ytterbium activity is very high, easily oxidized, and the vapor pressure is very high. Based on the research of tungsten copper and tungsten silver alloy, the research of the tungsten ytterbium pseudoalloy was studied. After optimizing the particle size of the tungsten powder and the experiment technology , The cold isostatic pressing (200 MPa pressure) sintering sintering preparation of tungsten skeleton, 1000 ° C hydrogen reduction pre-sintering, vacuum sintering at 1800 ° C, argon gas atmosphere infiltration rare earth ytterbium Preparation of tungsten ytterbium alloy synthesis of its density, hardness and other basic experiments Data, analysis of the organization of tungsten ytterbium alloy. The results show that the density of tungsten-ytterbium alloy is 15.30.gcm-3, the relative density is over 99.5%, the hardness is lower than HRB82, and the distribution of the tungsten skeleton is uniform. The distribution of ytterbium in the yttrium-to-ytterbium alloy prepared by infiltration method shows the distribution of ytterbium is uniform in large area and local in high power state. The enrichment of ytterbium is consistent with the distribution of tungsten channel. The prepared Ytterbium alloy can meet the special requirements of supporting materials.