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以碘化法制备的结晶铪为研究对象,分别利用沉积增重法、光学显微镜、显微硬度仪、电感耦合等离体发射光谱仪等研究了碘化过程中K值对结晶铪的沉积速度、微观组织、显微硬度以及杂质含量的影响。结果表明:碘化制备的结晶铪晶粒尺寸均较大(>1 mm),试验温度范围内,随着K值的增加,结晶铪沉积速度明显增加、晶粒尺寸增大;碘化制备的结晶铪棒硬度均较低(HV average<1600 MPa),且随着K值增加结晶铪棒的显微硬度降低;碘化法制备的结晶铪棒杂质含量低,随着K值增加结晶棒中Fe、Ni等金属杂质含量降低。
The crystallization hafnium prepared by the iodination method was used as the research object. The deposition rate of K value to the crystalline hafnium during the iodination process was studied by using deposition weight gain method, optical microscope, microhardness tester and inductively coupled plasma emission spectrometer, respectively. Microstructure, microhardness and impurity content. The results show that the crystal size of crystalline hafnium oxide prepared by iodination is larger (> 1 mm). In the experimental temperature range, with the increase of K value, the deposition rate of crystalline hafnium increases obviously and the grain size increases. (HV average <1600 MPa), and the microhardness of the crystalline hafnium rod decreases with the increase of K value. The content of impurities of the crystalline hafnium rod prepared by the iodination method is low, and as the K value increases, Fe, Ni and other metal impurities decreased.