Study on New Functional Materials Concerned with Automobile

本文以“汽车用新型功能材料的研究”为主题，进行了以下研究结果：(1)对Zn0荧光粉的电子能带结构进行了研究，以阐明其发光机理。首先获得了可重复制备等膜厚Zn0薄膜的方法，然后进行了TSC、光致发光和光传导实验，得到了考虑Zn0发光机理的重要结果。(2)结合陶瓷的实用化是目前最重要的课题之一，氮化硅是高温结构件的优良候选材料之一。然后对氮化硅的结合进行了研究，发现氮化硅可以通过HIP法与Cr、Fe-V等相结合。然后，讨论了铜作为粘结剂的作用。所得结果如下：在120MPa的氩气气氛下，在1923K以上的温度下，用HIP法可以将氮化硅与铜薄膜结合在一起。随着处理温度的升高，接头强度增大。(3)在298K时，根据合金在同一溶液中的极化曲线确定的钝化电位范围内调节试样电位。通过扫描电镜观察了试样的断口形貌，并对合金的断裂机理进行了探讨。固溶处理合金的过路率随应变速率的增加而波动较大，而峰时效合金的过路率随应变速率的增加变化不大。三元Al-Zn-Mg合金中铜的含量对表面膜形成的影响似乎有所降低。塑性变形孔道的波动取决于新表面的溶解，而孔道的减小取决于表面膜的修复。在固溶处理合金中，韧窝模式主要出现在表面附近和内部区域，而穿晶裂纹部分被认为是由点蚀引起的裂纹。在峰时效合金中，主要观察到由薄膜断裂和修复引起的晶间裂纹和韧窝模式。(4)采用金刚石和CBN晶粒的超磨轮，用于陶瓷加工，效率高，精度高。因此，我们的目标是生产高精度电镀超晶粒轮，具有高的形状偏差和理想的工作表面。所得结果如下：（一）利用静电原理均匀散布颗粒的方法。(2)离心力作用使附着层厚度均匀。生产砂轮是可能的。少

As a result of researching under the theme "Study on New Functional materials concerned with automobile", the following consequences were obtained(1) The experiments to investigate the electron energy-band structure of Zn0 phosphor were performed in order to elucidate its luminous mechanisms. At first we obtained the method to produce reproducibly Zn0 film electrodeposited with the constant film thickness and then we got the important results to consider the luminous mechanisms of Zn0 by carrying out the experiments of measuring TSC, photo-luminescence and photo-conduction.(2) It is one of the most important subject to join ceramics to put them to practical use and silicon nitride is one of the exellent candidates for the high temperature structural component. Then, it was investigated to join silicon nitride and it was recognized that silicon nitride was able to be joined to itself with Cr, Fe-V and so on by HIP process. Then, the effects of cupper used as binder was discussed in this … More work. The results obtained are as follows. Silicon nitride was able to be bonded itself using thin film of copper by HIP process under the atmosphere of argon gas, 120MPa, and at the higher temperature than 1923K. The joining strength increased with the higher treated temperature.(3) The potential of the specimen was regulated in region of passivation potential which predetermined from the polarization curve of the alloy in the same solution at 298K. The fracture surface of the specimen was obseved by SEM, and the mechanism of rupture of the alloys was discussed. Ipass is fluctuated widely with increase of strain rates in the solution-treated alloy, but it is not sovaried with increase of strain rates in peak-aged alloy. The cupper content in the ternary Al-Zn-Mg alloy seems to have a decreased effect on Ipass in regard to the formation of surface film. The fluctuation of Ipass by plastic deformation depends on the dissolution of fresh surfaceplane and decrease of it depends on the repair of the surface film. Dimple pattern is mainly observed both vicinity of the surface and inside region, furthermore transgranular cracking is considered in partly as crack induced by pitting corrosion in solution-treated alloy. Intergranular cracking caused by rupture and repair of film, and dimple pattern is mostly observed in peak-aged alloy.(4) Ultra grinding wheels which use Diamond and CBN grain increase to use for ceramics with high efficiency and accuracy. Therefore we are aiming for production of high precision electroplated ultra grain wheels which have high form deviation and ideal working surface. The results obtained are as follows ; (I)Method which spread grains uniformly use the principle of static electricity. (II)Adhesion layer become uniformity thickness by centrifugal force. It is possible to product grinding wheel. Less