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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Plasma-Sprayed Alumina on the Strength, Elastic Modulus, and Damping of Ti-25Al-10Nb-3V-1Mo Intermetallic
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Effect of Plasma-Sprayed Alumina on the Strength, Elastic Modulus, and Damping of Ti-25Al-10Nb-3V-1Mo Intermetallic

机译：血浆喷涂氧化铝对Ti-25Al-10NB-3V-1MO金属间质强，弹性模量和阻尼的影响

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摘要

The effect of a plasma-sprayed Al_2O_3 coating on the bend strength, elastic modulus, and damping of Ti-25Al-10Nb-3V-1Mo intermetallic substrate was measured. Two coating thicknesses of 0.1 and 1.0 mm were used in the study. The average strength and Weibull coefficients of the intermetallic samples coated with the 0.1 mm Al_2O_3 coating were very similar to those of the uncoated intermetallie samples. On the other hand, the average strength of the samples coated with 1.0 mm Al_2O_3 was significantly lower than the strength of the uneoated intermetallie substrate. The lower strength of the 1.0 mm coated samples was attributed to the higher volume fraction of the Al_2O_3 coating (which has a lower strength than the Ti-25Al-10Nb-3V-1Mo substrate) and higher porosity in the 1.0 mm coating. The Young's modulus and damping values of the 0.1 mm Al_2O_3-coated intermetallics did not vary significantly from those of the uneoated substrate. However, the damping values of the 1.0 mm Al_2O_3-coated intermetallics were significantly larger than those of the uneoated substrate. The higher damping values measured for the 1.0 mm Al_2O_3-coated samples were attributed to the higher porosity in the thicker coating and to defects in the coating as a result of the spraying process.
机译：测定了等离子体喷涂的Al_2O_3涂层对弯曲强度，弹性模量和Ti-25A-10NB-3V-1MO金属间基板的阻尼的影响。研究中使用了两种0.1和1.0mm的涂层厚度。涂有0.1mM Al_2O_3涂层的金属间样品的平均强度和微泡系数与未涂覆的白芽孢子样品非常相似。另一方面，涂有1.0mM Al_2O_3的样品的平均强度显着低于未加入的白细变基质的强度。 1.0mM涂覆的样品的较低强度归因于Al_2O_3涂层的较高体积分数（其具有比Ti-25Al-10NB-3V-1MO底物的较低强度）和1.0mM涂层中的孔隙率较高。 0.1mm Al_2O_3涂层金属间金属间的杨氏模量和阻尼值与流动底物的模量没有显着变化。然而，1.0mM Al_2O_3涂覆的金属间金属间的阻尼值显着大于未加入的基材。测量为1.0mM Al_2O_3涂覆的样品测量的较高阻尼值归因于较厚的涂层中的孔隙率较高，并且由于喷射过程而缺损涂层。

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