Industrial feasibility of the nitrocoat process
Industrial feasibility of the nitrocoat process
复制标题
硝基涂层工艺的工业可行性
DOI：
10.1016/j.surfcoat.2005.08.008
复制
发表时间：
2005
影响因子：
5.4
通讯作者：
G. Janssen
中科院分区：
文献类型：
--
作者：
J. Kamminga;D. Doerwald;M. Schreurs;G. Janssen
最近开发的硝化涂层工艺包括等离子体氮化步骤和随后的硬涂层沉积步骤，其中两个步骤都在物理气相沉积（PVD）装置中进行。为了在氮化区和PVD涂层之间有良好的附着力，氮化铁在氮化钢表面的存在是有害的。氮涂层工艺的目的是防止氮化处理过程中形成氮化铁。这样就可以省去中间抛光工序。研究了氮化工艺在工业生产中的可行性。在一个满载的PVD机器上，使用工业相关的背景压力成功地应用了等离子体氮化过程。对于成分差别很大的钢，采用单一的渗氮条件进行渗氮，而不形成氮化铁。在这些条件下，所有钢都表现出满意的氮化硬度提高。因此，硝基涂层处理不同类型的钢在一个批次是可能的。
The recently developed nitrocoat process consists of a plasma nitriding step and a subsequent hard coating deposition step, where both steps are performed in a physical vapour deposition (PVD) apparatus. For good adhesion between the nitrided zone and the PVD coating the presence of iron nitrides at the surface of the nitrided steel is detrimental. The aim of the nitrocoat process is to prevent the formation of iron nitrides during the nitriding treatment. Then an intermediate polishing process can be omitted. The feasibility of the nitriding process for industrial use was investigated. In a fully loaded PVD machine the plasma nitriding process was successfully applied using an industrially relevant background pressure. For steels very different in composition, a single set of nitriding conditions was obtained for nitriding without the formation of iron nitrides. All the steels showed satisfactory hardness increase due to nitriding under these conditions. Consequently, nitrocoat treatment on different steel types in a single batch is possible.