Fe-La, Fe-Ce, Fe-La-P, Fe-Ce-P and Fe-P alloys were obtained f rom aqueous solutions by using optimized electroplaing solutions and process con ditions. The experimental results show that these alloys (Fe-La-P, Fe-Ce-...Fe-La, Fe-Ce, Fe-La-P, Fe-Ce-P and Fe-P alloys were obtained f rom aqueous solutions by using optimized electroplaing solutions and process con ditions. The experimental results show that these alloys (Fe-La-P, Fe-Ce- P and Fe-P) have amorphous structure. The crystallization activation energy a nd kinetics equation of three kinds amorphous coatings have been determined by D SC method. The results indicated that the crystallization activation energy of F e-P, Fe-La-P, Fe-Ce-P amorphous coatings are 175.2, 370.1, 434.6kJ·m ol-1 respectively. The crystallization mechamism of three kinds amorphous alloy s may be expressed by Avrami-Erofeev equation (n=1), the kinetics equation is .展开更多
为模拟Fe75Cr12.5Mo12.5合金非晶/纳米晶化的整个过程,采用分子动力学方法,通过动力学弛豫、淬火和退火处理得到了Fe75Cr12.5Mo12.5合金的非晶/纳米晶态结构.采用径向分布函数(radius distribution function,RDF)和X线衍射图(X-ray diff...为模拟Fe75Cr12.5Mo12.5合金非晶/纳米晶化的整个过程,采用分子动力学方法,通过动力学弛豫、淬火和退火处理得到了Fe75Cr12.5Mo12.5合金的非晶/纳米晶态结构.采用径向分布函数(radius distribution function,RDF)和X线衍射图(X-ray diffraction,XRD),分析了模拟过程中各阶段的原子结构.结果表明:Fe75Cr12.5Mo12.5合金的非晶和纳米晶形成能力较强,添加非金属元素能进一步提高非晶形成能力.分子动力学模拟技术为铁基非晶/纳米晶的成分配比和工艺选择提供了理论依据.展开更多
文摘Fe-La, Fe-Ce, Fe-La-P, Fe-Ce-P and Fe-P alloys were obtained f rom aqueous solutions by using optimized electroplaing solutions and process con ditions. The experimental results show that these alloys (Fe-La-P, Fe-Ce- P and Fe-P) have amorphous structure. The crystallization activation energy a nd kinetics equation of three kinds amorphous coatings have been determined by D SC method. The results indicated that the crystallization activation energy of F e-P, Fe-La-P, Fe-Ce-P amorphous coatings are 175.2, 370.1, 434.6kJ·m ol-1 respectively. The crystallization mechamism of three kinds amorphous alloy s may be expressed by Avrami-Erofeev equation (n=1), the kinetics equation is .
文摘为模拟Fe75Cr12.5Mo12.5合金非晶/纳米晶化的整个过程,采用分子动力学方法,通过动力学弛豫、淬火和退火处理得到了Fe75Cr12.5Mo12.5合金的非晶/纳米晶态结构.采用径向分布函数(radius distribution function,RDF)和X线衍射图(X-ray diffraction,XRD),分析了模拟过程中各阶段的原子结构.结果表明:Fe75Cr12.5Mo12.5合金的非晶和纳米晶形成能力较强,添加非金属元素能进一步提高非晶形成能力.分子动力学模拟技术为铁基非晶/纳米晶的成分配比和工艺选择提供了理论依据.
