PVD-TiMgGdN coatings have been successfully developed by the authors using an industrial DC-magnetron PVD unit. The coatings reveal excellent corrosion protection capabilities for mild steel substrates for at least 800 h in the neutral salt spray test (NSS). MgGd was added to the TiN matrix by using segmented (Seg.) multi-component targets, consisting of segments of pure Ti and of a Mg- 30 wt.-% Gd alloy.

The Seg. targets caused an increased defect density due to droplets forming at the gaps between the segments which leads to an unsatisfactory wear performance.

To overcome the low mechanical and wear properties by keeping the coatings excellent corrosion performances stable, a TiMgGd target with a specific Ti:Mg:Gd ratio was manufactured by powder metallurgy (PM) technology processed out of pure metal powders.

In the present work, the properties of the corrosion and wear performance of DC-PVD-TiMgGdN coatings, which were synthesized onto corrosive mild steel substrates by using a Seg. target and a PM target of comparable Ti:Mg:Gd ratios together with identical deposition parameters, are compared with each other.

The coatings were characterized regarding their microstructural, mechanical, physical and corrosion properties. Furthermore, ball on disk wear tests were conducted by reciprocal dry sling SRV III tests.

It is shown that the excellent corrosion performance, could significantly be boosted by using the PM TiMgGd sputter target. Moreover, a remarkable increase in wear resistance of the TiMgGdN coatings can be examined by the use of a PM sputter target. It was found that the chemical properties of the TiMgGdN coatings as well as the nitrogen gas flow have a major influence on the mechanical coating properties and on the resulting microstructure, which directly correlates with the corrosion and wear properties.

作者使用工业直流磁控管 PVD ​​装置成功开发了 PVD-TiMgGdN 涂层。该涂层在中性盐雾试验 (NSS) 中显示出对低碳钢基材至少 800 小时的出色防腐蚀能力。通过使用分段 (Seg.) 多组分靶将 MgGd 添加到 TiN 基体中，该靶由纯 Ti 和 Mg-30 wt.-% Gd 合金的分段组成。

赛格。由于在段之间的间隙处形成液滴而导致缺陷密度增加，从而导致不令人满意的磨损性能。

为了通过保持涂层优异的腐蚀性能稳定来克服低机械和磨损性能，通过粉末冶金 (PM) 技术制造出具有特定 Ti:Mg:Gd 比率的 TiMgGd 靶材，该靶材由纯金属粉末加工而成。

在目前的工作中，DC-PVD-TiMgGdN 涂层的腐蚀和磨损性能是通过使用 Seg 合成到腐蚀性低碳钢基材上的。靶和具有可比 Ti:Mg:Gd 比率以及相同沉积参数的 PM 靶相互比较。

对涂层的微观结构、机械、物理和腐蚀性能进行表征。此外，球盘磨损测试是通过相互干式吊索 SRV III 测试进行的。

结果表明，使用 PM TiMgGd 溅射靶可以显着提高优异的腐蚀性能。此外，可以通过使用 PM 溅射靶来检查 TiMgGdN 涂层耐磨性的显着提高。结果表明，TiMgGdN 涂层的化学性能以及氮气流量对涂层的机械性能和最终的微观结构有重大影响，这与腐蚀和磨损性能直接相关。