Combination of Nano-coating Materials and 3D Technology


The Nano-surface Engineering Laboratory of Harbin Institute of Technology has made great efforts to tackle the key needs of the country in the research of thermal barrier coatings and transition alloy layers. They have created several unique alloy and ceramic powder materials with precise composition control, high density, good sphericity, narrow particle size distribution range and good fluidity, which can not only be widely used in the preparation of key core components of the two engines, but also have the potential to be used for 3D printing parts.


They have developed nanostructured zirconate thermal barrier coating powder materials through special nano-powder granulation control technology, providing technical support for the development of high-end engines in my country. The thermal insulation effect of the nano-ceramic coating prepared with this zirconate powder material is much better than that of the traditional micron ceramic layer coating with the same thickness that is widely used now. In addition, the nanostructured dual-ceramic coating has better thermal shock resistance.


The multi-component MCrAlY series of high-temperature alloy powder materials are widely used as bonding layers for thermal barrier coatings or as separate coatings for aircraft engines and gas engines due to their good resistance to high-temperature oxidation and thermal corrosion, good plasticity, similar thermal expansion coefficient to the substrate, little effect on substrate performance, and adjustable composition. Due to the development of 3D printing technology, this MCrAlY alloy powder is expected to be directly used to print hot end components such as engine and turbine blades, thereby changing the current multiple processes of spraying thermal barrier coatings on high-temperature alloy substrates, and directly and quickly 3D printing blades and other parts with integrated substrate and coating material functions.