【摘要】 设计了5种不同硅硼含量的FeCrMoCBSi系粉芯线材,利用电弧喷涂技术制备涂层,对涂层的相组成、非晶相含量、非晶相稳定性、微观组织结构及涂层截面的显微硬度进行了研究和分析,测试了涂层在500℃时的耐磨粒磨损性能。结果表明:硅硼含量的调整使得涂层中的非晶相含量在47%到65.1%之间变动,却未引起涂层晶化温度的变化。随着涂层中非晶相含量的增加,涂层的显微硬度和耐磨粒磨损性能随之提高。其中,6%原子分数的硅元素和12%原子分数硼元素的添加的涂层中的非晶相含量最高,为65.1%,其晶化温度为853K,截面显微硬度平均值为1 302.1HV0.1,测试10h的相对耐磨性为GCr15轴承钢球的5.2倍。更多还原

【Abstract】 Five FeCrMoCBSi cored wires which have different Si and B content were designed.Coatings were prepared by arc spraying technology.The phase composition,amorphous phase content,thermal stabilities,microstructure and hardness of the coating were analyzed.The abrasive wear-resistant properties at temperature of 500 ℃ of the coatings were also studied.The results showed that amorphous phase content in the coatings varied from 47% to 65.1% with different addition of Si and B element in the coatings,but they have the same Tk(853 K).With the increase of amorphous phase content in the coating,the HV hardness and abrasive wear-resistant property of the coating increased.The coating which has 6% atoms content of Si and 12% atoms content of B has the highest amorphous phase content of 65.1%,the average hardness of the coating is 1 302.1 HV0.1,the relative wear-resistant property of the coating is 5.2 times by the GCr15 bearing ball after 10 hours test.更多还原