Purpose

This paper aims to address the coating and compound analysis of diamond-like carbon (DLC) on steel, to understand the frictional behavior in tribological gear systems presented in paper Part I. Here, the Ti and Zr modified DLC coating architectures are analyzed regarding their chemical, mechanical and thermophysical properties. The results represent a systematic analysis of the thermal insulating effect in tribological contact of DLC coated gears.

Design/methodology/approach

The approach was to evaluate the effect of the substitution of Zr through Ti at the reference coating ZrCg to TiCg and the effect on thermophysical properties. Furthermore, the influence of different carbon and hydrogen contents on the coating and compound properties was analyzed. Therefore, different discrete Ti or Zr containing DLC coatings were deposited on an industrial coating machine. Thereby the understanding of the microstructure and chemical composition of the reference coatings is increased.

Findings

Results prove comparable mechanical properties of metal modified DLC independent of differences in chemical compositions. Moreover, the compound adhesion between TiC_g/16MnCr5E was improved compared to ZrC_g/16MnCr5E. The effect of hydrogen content Ψ and carbon content x_c on the thermophysical properties is limited by Ψ = 18 at.% and x_c = 90 at.%.

Practical implications

The findings of the combined papers Part I and II show a high potential for industrial application of DLC on gears. Based on the results DLC coatings and gears can be tailored to each other.

Originality/value

Systematic analysis of DLC coatings were conducted to evaluate the effect of titanium, carbon and hydrogen on thermophysical properties.

中文翻译：

---

DLC 涂层直齿轮 – 第二部分：涂层特性和工业应用潜力

目的

本文旨在解决钢上类金刚石碳 (DLC) 的涂层和化合物分析，以了解论文第一部分中介绍的摩擦学齿轮系统中的摩擦行为。这里，对 Ti 和 Zr 改性的 DLC 涂层结构进行了分析。化学、机械和热物理特性。结果代表了 DLC 涂层齿轮在摩擦学接触中的隔热效果的系统分析。

设计/方法/方法

该方法是评估在参考涂层中 Zr 通过 Ti 取代 ZrCg 到 TiCg 的影响以及对热物理性能的影响。此外，分析了不同碳和氢含量对涂层和复合物性能的影响。因此，在工业涂层机上沉积了不同的含 Ti 或 Zr 的 DLC 涂层。从而增加了对参考涂层的微观结构和化学成分的理解。

发现

结果证明金属改性的 DLC 具有可比的机械性能，而与化学成分的差异无关。此外，与ZrC _g /16MnCr5E相比，TiC _g /16MnCr5E之间的化合物粘附得到改善。氢含量 Ψ 和碳含量 x _c对热物理性质的影响受限于 Ψ = 18 at.% 和 x _c  = 90 at.%。

实际影响

合并论文第一部分和第二部分的研究结果表明，DLC 在齿轮上的工业应用具有很高的潜力。根据结果​​，DLC 涂层和齿轮可以相互定制。

原创性/价值

对 DLC 涂层进行了系统分析，以评估钛、碳和氢对热物理性能的影响。