Numerical Simulation of Temperature Field in Nanostructured Al2O3-13TiO2 Feedstock in Supersonic Plasma Spraying

作者：Li Changqing^*; Zhu Youli; Ma Shining; Song Wei

来源：Rare Metal Materials and Engineering, 2012, 41: 81-84.

• supersonic plasma spraying
• nanostructured feedstock
• CCD image analysis
• numerical simulation

Velocity and temperature of nanostructured Al2O3-13TiO(2) feedstocks in supersonic plasma spraying was detected applying CCD thermal spray monitor. Based on the detect results, temperature field in the feedstock in spraying process was analyzed via finite element method. Result shows that the highest velocity of the flying particles exceed to 800m/s. With the increase of spraying distance, velocity decline parabolic. Surface temperature of the feedstock increase firstly and then decrease and the highest temperature exceed to 2600 degrees C. Internal temperature of the feedstock is higher than the melting point when the distance reaches to 80mm. As the spraying distance increase, temperature gradient in the particle decreased gradually.

• 出版日期2012-2
• 单位中国人民解放军装甲兵工程学院