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研究了固体渗硼的时间和温度对AISI H13工具钢耐磨和耐蚀性能的影响。将900℃和1 000℃固体渗硼2 h和4 h的渗硼试样和未渗硼试样进行无磨料固定球的微量磨损试验,耐蚀性能则通过0.1 mol HCl溶液中进行的动电位极化试验测定。渗硼试样中均形成了高硬度的渗层,钢的成分对渗层的硬度、厚度、渗层/基体界面的形貌和形成相等特性均有影响。对于合金元素含量比碳钢高的AISI H13钢,所形成的渗层硬度较高,渗层较薄,渗层/基体界面较平坦。在上述工艺条件下获得的渗层中,均发现有Fe_2B、FeB和CrB等硼化物。渗硼试样的耐磨和耐蚀性能得到了显著的改善,且在1 000℃渗硼的效果最佳。
The effects of solid-boring time and temperature on wear resistance and corrosion resistance of AISI H13 tool steel were studied. The micro-abrasion test of non-abrasive fixed ball was performed on the boron-infiltrated samples and the boron-infiltrated samples which were boronizing at 900 ℃ and 1 000 ℃ for 2 h and 4 h respectively. The corrosion resistance was measured by the potentiodynamic potentials in 0.1 mol HCl solution Polarization test. Boronizing samples were formed in the high hardness of the infiltration layer, the composition of steel on the hardness of the infiltration layer, the thickness of the infiltration layer / substrate interface morphology and the formation of equal characteristics have an impact. For AISI H13 steel with higher alloying element content than carbon steel, the hardness of the infiltrated layer is higher, the infiltrated layer is thinner, and the interface between the infiltrated layer and the substrate is flatter. In the layer obtained under the above process conditions, were found borides such as Fe 2 B, FeB and CrB. The wear resistance and corrosion resistance of the boronizing samples have been significantly improved, and the boronizing effect at 1 000 ℃ is the best.