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首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure, Growth Kinetics and Some Mechanical Properties of Boride Layers Produced on Pure Titanium by Molten-Salt Boriding
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Microstructure, Growth Kinetics and Some Mechanical Properties of Boride Layers Produced on Pure Titanium by Molten-Salt Boriding

机译：通过熔盐拓展在纯钛中产生的硼化物层的微观结构，生长动力学和一些机械性能

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摘要

To modify the surface properties of pure titanium, boride layers had been fabricated by the boron molten-salt diffusion on pure titanium surfaces in the temperature range of 900-1100 A degrees C for 5- to 30-h treatments. The results demonstrated that the boride layers were mainly composed of TiB whiskers and TiB2 layers without the rutile titanium oxide TiO2. Two diffusion models were introduced to model the growth kinetics of boride layers. The parabolic growth constants and the boron diffusion coefficients were obtained. The boron activation energies for TiB2 and TiB were 225.617 and 165.266 kJ mol(-1), respectively. The surface microhardness of the borided titanium decreased with the increase in distance from the surface. The results of wear tests indicated that the wear properties had been improved significantly compared to the pure titanium under dry sliding conditions.
机译：为了改变纯钛的表面性质，通过在900-1100℃的温度范围内的纯钛表面上的硼熔盐扩散制造硼化物层。 结果表明，硼化物层主要由无金红石氧化钛TiO2的Tib晶须和TIB2层组成。 引入了两个扩散模型以模拟硼化物层的生长动力学。 获得抛物型生长常数和硼扩散系数。 TIB2和TIB的硼活化能量分别为225.617和165.266 kJ摩尔（-1）。 硼化钛的表面显微压随着距离表面的距离的增加而降低。 磨损试验结果表明，与干燥滑动条件下的纯钛相比，磨损性能显着提高。

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