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首页> 外文期刊>Metallurgical and Materials Transactions A >High-Temperature Sliding Wear Testing of Cathodic Arc Physical Vapor Deposition AlTiN- and AlTiON-Coated Hot Work Tool Steels
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High-Temperature Sliding Wear Testing of Cathodic Arc Physical Vapor Deposition AlTiN- and AlTiON-Coated Hot Work Tool Steels

机译：阴极电弧物理气相沉积AlTiN和AlTiON涂层热作工具钢的高温滑动磨损测试

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摘要

Thin hard coatings provide the much needed protection for steel thixoforming tools that must resist wear at high temperatures. The wear resistance of AlTiN- and AlTiON-coated hot work tool steel was investigated at 1023 K (750 °C), measured to be the cavity surface temperature shortly after the steel slurry was forced into the thixoforming die. The wear tests were repeated in exactly the same fashion with uncoated tool steel samples to identify the impact of AlTiN and AlTiON coatings on the high-temperature wear performance of X32CrMoV33 tool steel. The nature, the thickness, and the adherence of the oxide scales impact the tribological behavior. The poor adherence and limited ductility of ferrous oxides promote the failure of the oxide scale impairing the resistance to wear of the hot work tool steel at elevated temperatures. The substantial softening in the X32CrMoV33 hot work tool steel is also critical in the wear volume loss it suffers. AlTiN and AlTiON coatings, on the other hand, form a stable and protective oxide surface layer at high temperatures and therefore provide an enhanced resistance to oxidation. The latter is relatively more resistant to oxidation and is thus the better of the two coatings tested in the present work.
机译：薄的硬质涂层为必须抗高温磨损的钢触变成型工具提供了急需的保护。在1023 K（750°C）下研究了涂有AlTiN和AlTiON的热作工具钢的耐磨性，将其测量为将钢浆压入触变性成形模具后不久的型腔表面温度。对未涂层的工具钢样品以完全相同的方式重复进行磨损测试，以确定AlTiN和AlTiON涂层对X32CrMoV33工具钢的高温磨损性能的影响。氧化皮的性质，厚度和附着力会影响摩擦学行为。氧化亚铁的差的附着性和有限的延展性促进了氧化皮的破坏，从而损害了高温下热作工具钢的耐磨性。 X32CrMoV33热作工具钢的大量软化对于其遭受的磨损量损失也至关重要。另一方面，AlTiN和AlTiON涂层在高温下形成稳定的保护性氧化物表面层，因此提供了增强的抗氧化性。后者相对更抗氧化，因此在本工作中测试的两种涂层中性能更好。

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