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首页> 外文会议>ICTAP 2012 >The Effect of Al_2O_3 - SiO_2 Mixing Ratio as Steel Coating S45C to The Thermal and Adhesiveness Characteristic with Flame Spray Method for Rocket Nozzle Application
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The Effect of Al_2O_3 - SiO_2 Mixing Ratio as Steel Coating S45C to The Thermal and Adhesiveness Characteristic with Flame Spray Method for Rocket Nozzle Application

机译：Al_2O_3 - SiO_2混合率作为钢涂层S45C与火焰喷射法的火焰喷涂方法的热和粘合性特性的影响

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Nozzle is one part of rocket which works at high temperatures. The S45C steel is applied for material base of nozzle. This material was coated by Thermal barrier coating (TBC) of Al_2O_3-SiO_2. The mixing ratio of ceramic oxide were 80%Al_2O_3- 20% SiO_2; 70%Al_2O_3- 30% SiO_2, and 60%Al_2O_3-40% SiO_2. Coating process is conduct by Flame Spray. The microstructure, phase and adhesion strength of TBC examined by Scanning Electron Microscope(SEM), XRay Diffraction and pull off test. The results shown that mullite formed at mixing ratio 70%Al_2O_3-30% SiO_2. The reduction of TBC thickness was reduced to 40% of the initial thickness after heating. The adhesive strength decreases with increasing of SiO_2 composition.
机译：喷嘴是火箭的一部分，适用于高温。 S45C钢用于喷嘴的材料基部。通过Al_2O_3-SiO_2的热阻涂层（TBC）涂覆该材料。陶瓷氧化物的混合比为80％Al_2O_3-20％SiO_2; 70％Al_2O_3-30％SiO_2和60％AL_2O_3-40％SIO_2。涂布过程是通过火焰喷雾进行的。扫描电子显微镜（SEM），X射线衍射和拉出试验中TBC的微观结构，相和粘附强度。结果表明，在混合比70％Al_2O_3-30％SiO_2处形成的莫来石。加热后，TBC厚度的减少降低至初始厚度的40％。随着SiO_2组合物的增加，粘合强度降低。

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