CAJ | 학술논문

采用亚快速凝固的方法制备75Te-25In(质量分数,％)合金,利用光学显微镜(OM)、X 射线衍射仪(XRD)、扫描电子显微镜(SEM)以及能谱仪(EDS)等方法,考察Te-In合金的微观组织、相组成及其化学成分.结果表明,Te-In 合金的微观组织均匀,平均晶粒尺寸约为5μm；合金由初晶相和共晶组织组成,其中初晶相为非平衡态的In2 Te5相,共晶组织则由固溶有In 的非平衡态 Te 相和非平衡态的 In2 Te5相共同组成,合金中未发现纯 Te 相和平衡态的 In2 Te5相的存在；非平衡态的 Te 相中 Te 的质量分数为84．2％, In的质量分数为15．8％.
채용아쾌속응고적방법제비75Te-25In(질량분수,％)합금,이용광학현미경(OM)、X 사선연사의(XRD)、소묘전자현미경(SEM)이급능보의(EDS)등방법,고찰Te-In합금적미관조직、상조성급기화학성분.결과표명,Te-In 합금적미관조직균균,평균정립척촌약위5μm；합금유초정상화공정조직조성,기중초정상위비평형태적In2 Te5상,공정조직칙유고용유In 적비평형태 Te 상화비평형태적 In2 Te5상공동조성,합금중미발현순 Te 상화평형태적 In2 Te5상적존재；비평형태적 Te 상중 Te 적질량분수위84．2％, In적질량분수위15．8％.
Te-In alloy was prepared with near-rapid solidification rate,in which the mass percent of Te was 75wt%.Optical microscopy (OM),X-ray diffraction (XRD),scanning electron microscopy (SEM),energy dispersive spectrometer (EDS)were used to study the microstructure and phase composition.The results show that the crystalline grains of Te-In alloy with near-rapid solidification rate are fine and uniform,the average grain size was about 5μm.The alloy was composed of primary phase and eutectic structure.The primary phase was nonequilibrium In2 Te5 ,the eutectic structure was composed of Te phase with In as solute atoms and non-equilibrium In2 Te5 phase.there were no pure Te and pure In2 Te5 in the alloy.The mass fraction of Te in Te phase was 84.2wt% and that of In was 15.8wt%.