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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：等离子喷涂氧化铝对Ti-25Al-10Nb-3V-1Mo金属间化合物的强度，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：测量了等离子喷涂的Al_2O_3涂层对Ti-25Al-10Nb-3V-1Mo金属间化合物基体的弯曲强度，弹性模量和阻尼的影响。在研究中使用了0.1和1.0 mm的两种涂层厚度。涂覆有0.1 mm Al_2O_3涂层的金属间样品的平均强度和威布尔系数与未涂覆的金属间样品的平均强度和威布尔系数非常相似。另一方面，涂有1.0 mm Al_2O_3的样品的平均强度显着低于未注金属的金属间基质的强度。 1.0 mm涂层样品的较低强度归因于Al_2O_3涂层的体积分数较高（其强度低于Ti-25Al-10Nb-3V-1Mo基材）和1.0 mm涂层中较高的孔隙率。涂覆有0.1 mm Al_2O_3的金属间化合物的杨氏模量和阻尼值与未填充基材的杨氏模量和阻尼值没有显着差异。但是，涂有1.0 mm Al_2O_3的金属间化合物的阻尼值明显大于未填充基材的阻尼值。对于1.0 mm Al_2O_3涂层的样品测得的较高的阻尼值归因于较厚的涂层中较高的孔隙率和喷涂过程导致的涂层缺陷。

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