| 초록 |
To improve the fuel consumption of the vehicle construction selected high strength materials. A kind of high strength material of up to 1650 MPa can be achieved by new process in comparison to a usual value of approximately 1100 Mpa for cold formed material. During the new process, the materials are heating up to high temperature. And the materials are carried over to the forming die and formed for cooling down to under room temperature. This process lead to a high-strength constructional element. A problem connected with this process is scaling of the materials surface due to a high temperature oxidation. In this study, organic-inorganic silica nanocomposites were prepared by sol-gel method for protecting a corrosion from coating agents. These coating agents protected the materials from scaling during high temperature process. The funding of this research by the Ministry of Commerce, Industry, and Energy through high performance nanocomposite program is gratefully acknowledged. |
