Study on New Functional Materials Concerned with Automobile

本论文以“汽车用新型功能材料的研究”为主题，取得了以下研究成果：（1）对Zn 0荧光粉的电子能带结构进行了实验研究，以阐明其发光机理。首先得到了制备可重复性好、膜厚恒定的Zn_0薄膜的方法，然后通过对Zn_0薄膜的热激电流、光致发光和光电导的测量，得到了考虑Zn_0发光机理的重要结果。(2)陶瓷材料的连接是陶瓷材料走向实用化的重要课题之一，而氮化硅是高温结构件的理想材料之一。然后，研究了连接氮化硅，并且认识到氮化硅能够通过HIP工艺与Cr、Fe-V等自身连接。讨论了铜作为粘结剂的作用 关于我们 工作所得结果如下。采用热等静压工艺，在氩气气氛下，120 MPa，温度高于1923 K的条件下，氮化硅与铜薄膜实现了自结合。随着热处理温度的升高，接头强度增加。(3)根据合金在298 K时的极化曲线，在钝化电位范围内调节试样的电位。用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。在固溶处理后的合金中，IPass随应变速率的增加而大幅波动，而在峰时效后的合金中，IPass随应变速率的增加而变化不大。在Al-Zn-Mg三元合金中，铜含量对表面膜的形成有降低Ipass的作用。塑性变形引起的Ipass的波动取决于新鲜表面层的溶解，而Ipass的降低则取决于表面膜的修复。在固溶处理后的合金中，表面附近和内部区域都有明显的韧窝形貌，穿晶裂纹的产生部分是由点蚀引起的。在峰时效态合金中，主要是膜层破裂和修复引起的沿晶开裂，并出现韧窝花样。(4)使用金刚石和CBN颗粒的超磨削砂轮增加了对陶瓷的高效率和高精度的使用。因此，我们的目标是生产高精度的电镀超颗粒车轮，具有高的形状偏差和理想的工作表面。研究结果如下：（1）利用静电原理使颗粒均匀分布的方法。（2）通过离心力使粘附层厚度均匀。可以生产砂轮。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