我要安装iso tool1.92 的问题

我要安装iso tool1.92 的问题

Microcrystalline coating superalloy

Crystal coating. Conventional diffusion aluminide coatings, MCrAlY coating and coated Y, o stable ZrO, ceramic coating completely different, it can be used with the same base ingredients microcrystalline Taijin self-protection,uggs kopen, thus avoiding the traditional coating some of the shortcomings. Obtained by magnetron sputtering grain size of less than O. 5 # m of CoCrAl ceramic coating, and the ordinary grain CoCrA1 Taijin layer of ceramic sputtering oxidation temperature 1100 ℃ and 1000 ℃ cyclic oxidation properties were studied and compared with the CoCrAlY alloy. Scratch method and acoustic emission technology _ 『adhesion of the oxide film by scanning electron microscopy, transmission electron microscopy,goedkope uggs, and Auger photoelectron spectroscopy analysis of the oxide film surface morphology, particle size products, the primary composition of the oxide film. The results show that, CoCrA1 initial alloy oxidation can also form a single A1O film, but its easy to peel off in the cooling process. As CoCrA1 Taijin the diffusion coefficient of alloying elements in small, but the solubility of oxygen in the alloy and the diffusion coefficient of a larger, making it very difficult primary self-healing alumina flake, to continue the oxidation process in the alloy will form cr, o film , AI20 as the internal oxidation. protective film is less than cro A1, o film, so Taijin antioxidant properties,moncler jackets, especially the poor cyclic oxidation performance. The sputtering temperature resistant ceramic coating CoCrAI and cyclic oxidation performance than normal grain CoCrAI alloy is greatly improved. By studying the mechanism of the antioxidant ceramics have the following understanding: (1) sputtered microcrystalline coating has columnar structure. In the oxidation process, oxide grain boundaries as nucleation centers, and further oxidation along columnar grain boundaries in the oxide film and the substrate of the question, the formation of many micro-screw (micro ~ peggs), the pinning of the oxide film play a role in raising oxide film and the substrate bonding force. (2) early in the oxidation ceramic coating, the surface can form a uniform and compact one AI, O film, and the oxide film grain than the average grain size of alloy surface oxide film is much smaller grains (TEM show that the former is the latter l / 5), during the cooling process the surface of the oxide film microcrystalline grain boundary sliding by the release of thermal stress, so that the oxide film has good adhesion, improved l 『alloy oxidation resistance. From the scratch test and acoustic emission test results show that non-active elements of the microcrystalline CoCrA1 plastic surface film coating and adhesion activity than the added element of CoCrA1 better alloy surface oxide film was studied with the same micro- Crystal K38G coating temperature and the cyclic oxidation resistance of alumina membrane properties and healing capabilities. The results show that normal grain K38G alloy oxidation process in the formation of cr, o-based protective film, and the formation of microcrystalline K38G coatings, Alo a single film, oxide film and substrate Taijin have good adhesion,ugg boots günstig, so its antioxidant properties than the same composition Taijin increase considerably, and oxidation weight gain compared with the same ingredients Taijin aluminized layer is also small. The ceramic coating surface oxide film has a good white more capacity, will IO00'C 100 hours of oxidation oxide film worn outside the sample, the sub-surface able to form a protective oxide film and a good increase CoCrA1 microcrystalline oxidation resistance of alloys difference is: the former is accompanied by increasing the oxide film revolves, the latter by changing the type of oxide film, namely, by microcrystalline to form a single continuous surface and good adhesion with the matrix Al, o membrane, while the average grain alloy surface to form a Cr, O-based oxide film also studied NiAl microcrystalline coating also made the same results. Through microcrystalline also greatly enhance their high temperature oxidation resistance,Moncler sale, to achieve the white protective Instructor: Shi Changxu, Wuwei Xie, John received a l'_

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