【作者】 尹涛；

【导师】 孙志远；

【作者基本信息】 天津大学 ， 动力机械及工程， 2004， 硕士

【摘要】 本文首先对陶瓷--金属梯度功能材料这一新型材料的设计、制备、特性评价做了简单介绍,并主要研究了陶瓷--金属梯度功能材料在摩托车发动机应用后所产生的效果。发动机台架试验表明:陶瓷--金属梯度功能材料对发动机的动力性、燃油消耗率都有一定程度的改善。因此预测这种新型材料具有良好的减磨性，良好的减磨性则是功率提高、油耗下降的主要原因。通过在在天津大学的摩擦磨损试验室进行的试验证实了以上预测的正确性。本文对陶瓷--金属梯度功能材料进行了进一步的试验研究，在采用梯度功能材料的发动机进行400小时耐久试验结束后，对发动机功率、扭矩及油耗与试验前进行了统计比较，并且通过在耐久试验前后解体发动机，对活塞、气缸体的主要磨损部位进行了测量对比。试验比较结果显示，气缸体及活塞的主要接触面的磨损量很小，发动机功率下降不明显，这表明梯度功能材料在发动机上能够起较好的作用。本文同时进行了另外一项试验研究，分别对两组五种不同材料的样块进行盐雾试验。结果表明经过镀膜的材料具有良好的耐腐蚀性，尤其镀膜后的铸铝材料，耐腐蚀性具有明显的提高。目前我国的发动机活塞及缸套多采用铸铝材料，在经过镀膜后，由于其耐腐蚀性提高，必然使得活塞及缸套的耐磨性提高。更多还原

【Abstract】 Firstly, a brief introduction is made to the design, preparation and properties’ evaluation of Ceramic- Mental FGM (Function gradient Material). The effects of the Ceramic-Mental FGM applied in motorcycle engine is studied. Results of engine bench test show that the appliance of Ceramic-Mental FGM in motorcycle engine improves the power out and the fuel economy of the engine. So it is predicted that the Ceramic-Mental FGM can reduce friction, thus increase the power out and reduce the fuel consumption, which is proved by the experiments held in the Friction and Wear Laboratory of Tianjin University.Further 400-hour durability test of the motorcycle engine equipped with FGM is held to analyze the change of the power out, the torque and the fuel consumption. It is found that the reduction of the power out is obscure. The main friction area on the piston and cylinder is measured and compared, which proves that Ceramic-Mental FGM can decrease the friction and wear between the cylinder and piston.Another salt spray test was held on 5 types material samples divided into 2 groups. The test results show that the corrosion resistance of the materials after film coating are improved effectively, especially to cast aluminum. Because most cylinders and pistons of motorcycle engines are made of cast aluminum in present China, the appliance of Ceramic-Mental FGM will improve the corrosion resistance and the abradability of the cylinder and piston, which improves the general performance of motorcycle engines.更多还原