Abstract

The paper analyzes the effect of isothermal holding time during air-atmosphere heating in and the nitride deposition in a vacuum on the regularities of the oxide and nitride coatings formation on VT6 titanium alloy. The kinetics of coating dissolution was studied during subsequent high-temperature vacuum annealing. The operation principle of oxide and nitride as a “barrier” coating is shown when creating a unidirectional gradient structure using thermal hydrogen treatment. It is shown that the creation of a finely dispersed surface structure using thermal hydrogen treatment makes it possible to increase hardness up to 40.5 HRC compared to the bulk hardness (33.5 HRC).

中文翻译：

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使用热处理和热化学处理在 VT6 钛合金中形成“单向”梯度结构的保护涂层形成

摘要

分析了空气-气氛加热和真空中氮化物沉积过程中的等温保温时间对VT6钛合金氧化物和氮化物涂层形成规律的影响。在随后的高温真空退火过程中研究了涂层溶解的动力学。当使用热氢处理创建单向梯度结构时，显示了氧化物和氮化物作为“屏障”涂层的工作原理。结果表明，与整体硬度 (33.5 HRC) 相比，使用热氢处理产生精细分散的表面结构可以将硬度提高至 40.5 HRC。