TiB2、Fe2B增强剂对PTA涂层AISI 430不锈钢表面磨损率的影响

Metallic Materials Pub Date : 2021-01-01 DOI:10.4149/km_2013_6_373

T. Teker

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引用次数: 2

摘要

采用等离子体转移电弧(PTA)和FeB、FeTi、FeW粉末在AISI 430钢基体上原位合成TiB2、Fe2B增强涂层。实验研究了粉末类型和粉末配比对涂层磨损率的影响。利用扫描电镜(SEM)、能谱分析(EDS)和x射线衍射(XRD)分析了涂层参数对涂层表面微观结构的影响。亚表面组织检测到铁素体(α)相和TiB2、Fe2B复合硼化物。对涂层试样表面进行磨粒磨损试验，考察了粒径对涂层磨损性能的影响。%的硼化物和显微组织的变化对磨损率的影响。结果表明，(FeB-FeTi-FeW)混合铁合金粉末包覆试样的磨损率最低。可通过多种方式处理:PTA、表面涂层、耐磨

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The role of TiB2, Fe2B reinforcements on the wear rate of the coated AISI 430 stainless steel surface by PTA

In-situ synthesized TiB2, Fe2B reinforced coating was fabricated on AISI 430 steel substrate by using plasma transfer arc (PTA) and FeB, FeTi, FeW powders. The effects of powder type and powder ratio on the wear rate of coating were investigated experimentally. SEM, EDS and XRD analyses were used to differentiate the effect of coating parameters on the microstructure, which characterize the coated surfaces. Primary ferrite (α) phase and complex TiB2, Fe2B borides were detected on the subsurface microstructure. Abrasive wear tests were performed on the coated surface of specimens to examine the influence of the size-vol.% of borides and microstructural changes on the wear rate. Depending on the results, it is seen that the specimens coated by (FeB-FeTi-FeW) ferro-alloy powders mixture have the lowest wear rate. K e y w o r d s: PTA, surface coating, wear

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Metallic Materials

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