| 摘要 |
PURPOSE:To improve product yield and to provide prolonged heat resistance and thermal shock resistance by blending 2CaO.SiO2 and CaO.4ZrO2 in specific ratio. CONSTITUTION:A thermal spraying material is composed of a 2CaO.SiO2-CaO.4 ZrO2 oxide and has a composition which consists of, by weight, 60-95% 2CaO.SiO2 and 5-40% CaO.4ZrO2 and in which 2CaO.SiO2+CaO.4ZrO2=100 is satisfied. A heat resisting member is formed by thermally spraying the above coating material on a heat resisting metallic material and parts having metallic coating layer excellent in high temp. corrosion resistance. The grain size of the oxide as coating material is regulated to 5-500mum, and particularly, it is preferable to regulate average grain size to 10-100mum. This thermal spraying material has superior mechanical strength. By using this thermally sprayed layer, a turbine blade, etc., having superior thermal shield effect and heat resistance can be obtained. |
