CAJ | 학술논문

利用平衡合金法研究Mg-Zn-Ce系富镁角在400℃时各金属间化合物的相成分、相结构及相关系.研究表明,Mg-Zn-Ce系富镁角丰在一个线性化合物T相,其化学式为(Mg1-xZnx)llCe.T相中Zn的含量为9.6％～43.6％(摩尔分数).T相的晶体结构为C底心正交晶格,其晶格参数随着Zn含量的增加而略有减小,分别为a=0.96～1.029 nm,b=1.115～1.204 nm,c=0.940～1.015 nm.Mg12Ce能够固溶7.8％的Zn元素,其化学式为(Mg1-xZnx)12Ce.确定了400℃时Mg-Zn-Ce系相图富镁角的相关系.
이용평형합금법연구Mg-Zn-Ce계부미각재400℃시각금속간화합물적상성분、상결구급상관계.연구표명,Mg-Zn-Ce계부미각봉재일개선성화합물T상,기화학식위(Mg1-xZnx)llCe.T상중Zn적함량위9.6％～43.6％(마이분수).T상적정체결구위C저심정교정격,기정격삼수수착Zn함량적증가이략유감소,분별위a=0.96～1.029 nm,b=1.115～1.204 nm,c=0.940～1.015 nm.Mg12Ce능구고용7.8％적Zn원소,기화학식위(Mg1-xZnx)12Ce.학정료400℃시Mg-Zn-Ce계상도부미각적상관계.
The crystal structures,compositions and phase relations of the intermetallics of Mg-Zn-Ce system in the Mg-rich corner at 400 ℃ were identified through equilibrium alloy method.For Mg-Zn-Ce system,there is a linear ternary compound (T phase),whose chemical formula is (Mgt-xZnx)11Ce.The range of Zn content in T phase is from 9.6％ to 43.6％ (molar fraction).The crystal structure of T phase is C-centered orthorhombic lattice with lattice parameters of a=0.96-1.029 nm,b=1.115-1.204 nm,c=0.940-1.015 nm.And the lattice parameters of T phase are decreasing a little with increasing Zn content.According to the results of composition and crystal structure,the maximal solubility of Zn in Mg12Ce is about 7.8％ (molar fraction),and the chemical formula of the solid solution can be identified as (Mg1-xZnx)12Ce.The isothermal section of Mg-Zn-Ce system in Mg-rich corner at 400 ℃ was constructed.