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采用工业钛粉氢化炉研究了Ta-10W(10 wt.%)合金铸锭的氢化工艺过程。结果表明,铸锭氢化工艺比车削屑子的氢化工艺要相对复杂,不仅需要将铸锭在高温下进行较长时间的高温活化处理,而且需要进行反复多次的吸氢-脱氢过程,氢原子才能突破表面污染层,进而打开氢化通道,逐步深入到铸锭内部使其发生持续的氢化反应,最终形成Ta-10W合金氢化粉末。在降温过程中控制炉体降温速率,保证低温下铸锭能持续发生氢化反应,是控制铸锭最终能完全氢化开裂的关键。与车屑制备的粉末相比,铸锭制得的粉末氧、氮等杂质含量大幅降低。
The hydrogenation process of Ta-10W (10 wt.%) Alloy ingot was studied by using industrial titanium powder hydrogenation furnace. The results show that the ingot hydrogenation process is more complicated than the turning filing hydrogenation process, which not only requires the ingot to be activated at a high temperature for a long time, but also requires repeated hydrogen absorption and dehydrogenation processes. Hydrogen Atoms can break through the surface of the contaminated layer, and then open the hydrogenation channel, and gradually into the ingot internal continuous hydrogenation reaction, the final formation of Ta-10W hydrogenated alloy powder. Controlling the cooling rate of the furnace during the cooling process and ensuring the continuous hydrogenation reaction of the ingot at the low temperature is the key to controlling the ultimate hydrogenation and cracking of the ingot. Compared with the car shaving powder, ingot obtained powder oxygen, nitrogen and other impurities significantly reduced.