铅/锡/钢层状复合材料的Miedema模型和Toop模型热力学分析
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摘要
在前期对铅/锡/钢层状复合材料研究为基础,为了从理论上揭示过渡金属Sn在Pb、Fe非混溶体系中所起的作用,文章借助Miedema模型和Toop模型对Pb、Sn、Fe二元及三元合金混合焓进行了计算,并对前期研究过程中铅/锡/钢层状复合材料界面出现的弥散颗粒物进行了理论解释,计算结果表明:过渡金属Sn的引入能够起到降低Pb-Fe非混溶合金体系混合焓,增大混合熵进而达到降低吉布斯自由能的目的。
Based on the study of lead/tin/steel laminated composite,in order to reveal the role of transition metals tin in Pb-Fe non-immiscible binary system,the mixing enthalpy of Pb-Sn-Fe alloy are calculated with the miedema model and the toop model and the dispersed particles emerging in the interface of lead/tin/steel laminated composite is explained. It is concluded that the introduction of transition metal Sn can play a role in reducing the mixing enthalpy of Pb-Fe non-immiscible binary system and increasing the entropy of mixing and then reducing the Gibbs free energy.
Based on the study of lead/tin/steel laminated composite,in order to reveal the role of transition metals tin in Pb-Fe non-immiscible binary system,the mixing enthalpy of Pb-Sn-Fe alloy are calculated with the miedema model and the toop model and the dispersed particles emerging in the interface of lead/tin/steel laminated composite is explained. It is concluded that the introduction of transition metal Sn can play a role in reducing the mixing enthalpy of Pb-Fe non-immiscible binary system and increasing the entropy of mixing and then reducing the Gibbs free energy.
引文
[1] F. Shahparast,B. L. Davies. A study of the potential of sintered i-ron-lead and iron-lead-tin alloys as bearing materials[J]. Wear,1978,50(1):145-153.
[2]贾均,赵九州,郭景杰,等.难混溶合金及其制备技术[M].哈尔滨:哈尔滨工业大学出版社,2002.
[3]竺培显,周生刚,孙勇,等. Bi对Pb-Al层状复合电极材料制备与性能的影响[J].稀有金属材料与工程,2010,39(5):911-914.
[4]黄子良,竺培显,周生刚,等. Al-Pb新型复合电极材料的制备及其性能研究[J].兵器材料科学与工程,2009,32(3):18-20.
[5]周生刚,竺培显,黄文芳,等. Pb-Al二元体系液-固界面自由能的热力学理论计算[J].物理化学学报,2009,25(11):277-280.
[6]刘志刚.合金热力学性质的Miedema理论计算[D].南宁:广西大学,2006. 1-64.
[7]张邦维,胡望宇,舒小林.嵌入原子方法理论及其在材料科学中的应用———原子尺度材料设计理论[M].长沙:湖南大学出版社,2002.
[8] Miedema A R,De Chatel P F,De Boer F R. Cohesion in alloys-fun-damentals of a semi-empirical model[J]. Physica,1980,1:1.
[9]吴玉锋,杜文博,聂祚仁,等. Mg-Al-M合金中Al-M相(M=Sr,Nd)析出行为的热力学分析[J].金属学报,2006,42(5):487.
[10]邱星武,张云鹏.高熵合金的特点及研究现状[J].稀有金属与硬质合金,2012,40(1):44.
[2]贾均,赵九州,郭景杰,等.难混溶合金及其制备技术[M].哈尔滨:哈尔滨工业大学出版社,2002.
[3]竺培显,周生刚,孙勇,等. Bi对Pb-Al层状复合电极材料制备与性能的影响[J].稀有金属材料与工程,2010,39(5):911-914.
[4]黄子良,竺培显,周生刚,等. Al-Pb新型复合电极材料的制备及其性能研究[J].兵器材料科学与工程,2009,32(3):18-20.
[5]周生刚,竺培显,黄文芳,等. Pb-Al二元体系液-固界面自由能的热力学理论计算[J].物理化学学报,2009,25(11):277-280.
[6]刘志刚.合金热力学性质的Miedema理论计算[D].南宁:广西大学,2006. 1-64.
[7]张邦维,胡望宇,舒小林.嵌入原子方法理论及其在材料科学中的应用———原子尺度材料设计理论[M].长沙:湖南大学出版社,2002.
[8] Miedema A R,De Chatel P F,De Boer F R. Cohesion in alloys-fun-damentals of a semi-empirical model[J]. Physica,1980,1:1.
[9]吴玉锋,杜文博,聂祚仁,等. Mg-Al-M合金中Al-M相(M=Sr,Nd)析出行为的热力学分析[J].金属学报,2006,42(5):487.
[10]邱星武,张云鹏.高熵合金的特点及研究现状[J].稀有金属与硬质合金,2012,40(1):44.