Joint Research on Advanced Materials Engineering

以“先进材料的力学性能”为研究课题，对陶瓷颗粒增强铝复合材料的热-机械疲劳和蠕变疲劳性能进行了评价。结果表明，材料在小应变区的同相热-机械疲劳寿命比在大应变区的长。在“钛合金的冶金与材料科学”课题中，阐明了Ti-Nb-Ta-Zr在强度、伸长率和弹性模量之间具有较好的平衡性。此外，通过对L929细胞的细胞毒性评价，显示出与纯钛相似的细胞毒性，表明其与人体具有良好的相容性。采用高频感应加热和回流熔炼技术，实现了生产适合实际应用的声音铸锭。在“先进材料的粉末冶金与机械合金化”研究课题上，重点研究了非平衡材料的生产和评价。其中，重点研究了等离子体喷射技术制备的非平衡超细颗粒的磁性能和铁碳体系的机械合金化。用球磨法对富勒烯（C60和C70）的结构变化进行了研究，结果表明，富勒烯的分子结构是稳定的，晶体的fcc结构容易无序，部分变成聚合物。在“表面涂层与功能梯度材料”的研究课题上，重点研究了制备的热电涂层的热电性能、添加元素种类和数量对热电性能的影响以及用热喷涂技术制备金属与陶瓷之间的功能梯度复合涂层。研究结果明确了掺杂元素功能梯度的多层热电器件的工作温度范围，以及功能梯度涂层的循环热机械疲劳性能。少

On the research subject "Mechanical properties of advanced materials", thermo-mechanical fatigue and creep fatigue properties of ceramic particles reinforced aluminum composites were evaluated. As a result, it is clarified that the in-phase thermo-mechanical fatigue lifetime of the materials investigated is longer in small strain region than that in the large strain region.On the research subject "Metallurgy and materials science of titanium alloys", it has been clarified that Ti-Nb-Ta-Zr possesses superior balance among strength, elongation and elastic modulus. In addition, it shows similar cytotoxicity to a pure titanium by evaluating cytotoxicity using L929 cells, and it suggests its superior compatibility for the human body. Producing sound ingots suitable for practical application has been realized by utilizing the high frequency induction heating and revitation melting techniques.On the research subject "Powder metallurgy and mechanical alloying of advanced materials", production … More and evaluation of non-equilibrium materials have been mainly investigated. Of these, it has been concentrated on magnetic properties of non-equilibrium ultra-fine particles fabricated by the plasma-jet technique and mechanical alloying of Fe-carbon systems. It is shown that molecular structure of the fulleren is stable as a result of the investigation on structural change of fullerenes (C60 and C70) by the ball milling, and that the fcc structure of crystal can be easily disordered and partially becomes polymer.On the research subject "Surface coating and functional gradient materials", main efforts are concentrated on thermoelectric properties of produced thermoelectric coating, effects of kinds and quantity of added dope elements on the thermoelectric property and fabrication of functionally graded composite coating between a metal and ceramic by the thermal spraying technique. As a result, operating temperature range of the multilayer thermoelectric device in which doped elements are functionally graded, and cyclic thermo-mechanical fatigue properties of functionally graded coating are clarified. Less