| The materials with low thermal coefficients were deposited on the surface machine parts that operate in high temperature environment to protect the metal substrate against heat erosion. The deposited surface coatings were usually referred to as thermal barrier coatings (TBCs).To improve the efficiency of turbine and aeronautical engine, the working gas temperature and pressure in combustion room had the tendency to be gradually increased. Ceramic thermal barrier coatings were developed in order to protect the vanes against thermal fatigue and heat erosion. Although conventional ceramic thermal barrier coatings played an important role in protecting superalloy substrate and improving the efficiency of engines, its properties were far beyond satisfaction as far as their properties and service life were concerned.Through conducting the experimentation of oxidation test at high temperature and thermal shock test, analyzed the growth feature of the TGO using scanning electron microscopy (SEM) and X-ray diffraction (XRD) .A new method of surface treating―Supersonic fine particles bombarding were applied to bond coating, studied the bombardment parameter(pressure, time and so on) influence on bombardment effect. The experiment for comparison between the two types of sample that fore and after bombardment was conducted, using experimentation of oxidation test at high temperature and the transformation of surface roughness.The result showed that the TGO was the key component of the TBCs system. The distribution of Al element has effect on the growth mechanism and then service life of thermal barrier coatings. The coating which was treated with Supersonic fine particles bombarding can built single component oxide film which is continuous and compact.
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