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首页> 外文期刊>Journal of Materials Science >Effects of the high temperature plasma immersion ion implantation (PIII) of nitrogen in AISI H13 steel
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Effects of the high temperature plasma immersion ion implantation (PIII) of nitrogen in AISI H13 steel

机译：AISI H13钢中氮的高温等离子体浸没离子注入（PIII）的影响

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In this paper we report the effect of high temperature PIII of nitrogen on the chemical and physical properties of AISI H13 steel. The implantation of H13 steels was carried out at different temperatures ranging between 300 degrees C and 720 degrees C. After the treatment, the surface morphology was drastically changed as observed by SEM analysis. Nitrogen penetration depth reaching up to 12 mu m was achieved at 620 degrees C and 720 degrees C. The maximum hardness of about 592 HV was obtained for the sample treated at 470 degrees C that is 17% higher than for untreated specimen. There was a decrease of the hardness values for temperatures above 470 degrees C. The same hardness behavior with the temperature was confirmed by nanoindentation testing. Although an enriched nitrogen layer was obtained, no evidence of nitride compounds was detected by XRD analyses. On the other hand, improvements of the H13 steel tribological properties and corrosion resistance were obtained. The wear tests were conducted by pin-on-disk tribometer (rotating mode). The wear volume decreased by factor of 4.5 compared to the standard tempered and annealed H13 steel and 2.6 times reduction of the coefficient of friction was achieved. The electrochemical measurements were performed in 3.5% NaCl solution, pH = 6. Open circuit potential curves showed that the potentials are nobler for the PIII treated samples than for untreated specimen. In addition, the corrosion current density of the samples treated at 620 degrees C and 720 degrees C diminished to 3 x 10(-8) A/cm(2).
机译：在本文中，我们报告了高温PIII对AISI H13钢的化学和物理性能的影响。 H13钢的注入是在300℃至720℃的不同温度下进行的。处理后，通过SEM分析观察，表面形态发生了巨大变化。在620摄氏度和720摄氏度下，氮的渗透深度达到了12微米。在470摄氏度下处理的样品的最大硬度约为592 HV，比未处理的样品高17％。对于高于470℃的温度，硬度值降低。通过纳米压痕测试证实了与该温度相同的硬度行为。尽管获得了富集的氮层，但XRD分析未发现氮化物的迹象。另一方面，获得了H13钢的摩擦学性能和耐腐蚀性的改进。磨损测试是通过销盘摩擦计（旋转模式）进行的。与标准回火和退火的H13钢相比，磨损量降低了4.5倍，摩擦系数降低了2.6倍。电化学测量是在pH = 6的3.5％NaCl溶液中进行的。开路电势曲线显示，与未经处理的样品相比，PIII处理的样品的电位更高。此外，在620摄氏度和720摄氏度处理的样品的腐蚀电流密度降低到3 x 10（-8）A / cm（2）。

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