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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Annealing Temperature on Tribological Properties and Material Transfer Phenomena of CrN and CrAlN Coatings
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Effect of Annealing Temperature on Tribological Properties and Material Transfer Phenomena of CrN and CrAlN Coatings

机译：退火温度对CrN和CrAlN涂层摩擦学性能和材料转移现象的影响

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摘要

This study evaluates the effects of annealing temperature and of the oxides produced during annealing processes on the tribological properties and material transfer behavior between the PVD CrN and CrAlN coatings and various counterface materials, i.e., ceramic alumina, steel, and aluminum. CrAlN coating has better thermal stability than CrN coating in terms of hardness degradation and oxidation resistance. When sliding against ceramic Al_2O_3 counterface, both CrN and CrAlN coatings present excellent wear resistance, even after annealing at 800℃. The Cr-O compounds on the coating surface could serve as a lubricious layer and decrease the coefficient of friction of annealed coatings. When sliding against steel balls, severe material transfer and adhesive wear occurred on the CrN and CrAlN coatings annealed at 500 and 700℃. However, for the CrAlN coating annealed at 800℃, much less material sticking and only small amount of adhesive wear occurred, which is possibly due to the formation of a continuous Al-O layer on the coating outer layer. The sliding tests against aluminum balls indicate that both coatings are not suitable as the tool coatings for dry machining of aluminum alloys.
机译：这项研究评估了退火温度以及退火过程中产生的氧化物对PVD CrN和CrAlN涂层与陶瓷陶瓷，铝和钢等各种对面材料之间的摩擦学性能和材料转移行为的影响。就硬度退化和抗氧化性而言，CrAlN涂层比CrN涂层具有更好的热稳定性。当在陶瓷Al_2O_3上滑动时，即使在800℃退火后，CrN和CrAlN涂层也都具有出色的耐磨性。涂层表面的Cr-O化合物可作为润滑层，并降低退火涂层的摩擦系数。当在钢球上滑动时，在500和700℃退火的CrN和CrAlN涂层会发生严重的材料转移和粘着磨损。但是，对于在800℃退火的CrAlN涂层，材料的粘附少得多，仅发生少量的粘合剂磨损，这可能是由于在涂层外层上形成了连续的Al-O层。对铝球的滑动测试表明，两种涂层都不适合作为铝合金干式加工的工具涂层。

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