钛中掺杂铪改性研究

为了研究掺杂合金化对金属Ti性能的影响,采用磁悬浮熔炼法制备了TiHfx(x=0.13、0.26、0.52、1.03)合金。成分分析表明,合金成分均一,Ti因饱和蒸气压高于Hf和化学清洗而有0.6%～2.6%的质量损失。形貌分析显示,除TiHf1.03外,其余组分合金为层状结晶。Hf掺杂显著增大了Ti基体的晶格体积,但合金保持了Ti基体的α相,无杂相生成。合金晶胞参数与组分的关系正偏离于线性,随Hf含量的增加,偏移量呈增大趋势。

Titanium Modification with Hafnium Doping

TiHf_x(X=0.13,0.26,0.52,1.03) is prepared on electromagnetic levitation melting system for enhancing the ability of hydrogen storage in the titanium metal.The homogeneity of the alloys is proven by ICP-AES analysis,but the proportion of the titanium in the alloys is 0.6%～2.6% less than the added amount because the titanium has a higher saturated vapor pressure than the hafnium at the same temperature.The crystal stratification is found by SEM in the majority of the alloys except for the TiHf_(1.03).The cell volume of the alloys expands with the doping hafnium,however,the α phase of the titanium basement is reserved in the alloys without any other phase.The dependence of the lattice parameter on the component of the alloys doesn't obey linearity,the deviation increasing with a larger Hf/Ti.