In this work, the surface of AISI 430 stainless steel was coated with a hyper-eutectic FeCrC and pure B₄C powders using the plasma transferred arc (PTA) welding method. Further, the microstructure, microhardness, and abrasive wear resistance of the coated layer were evaluated in this work. Hard coating layers were formed between 750HV and 1000HV from the PTA melting coating process with high energy input (due to PTA). Due to the addition of FeCrC and B₄C, the martensite, austenite, M₇(C-B)₃, M23(C-B)₆, Cr(C-B), FeCr, Fe₂B, Fe₃C, Fe₂C, SiC, and Fe₃(C-B) phases were formed in the coating layer which makes the layer very hard. The abrasive wear resistance of the coated layer was evaluated using the Taguchi method with L16 mixed-level orthogonal index. Samples, wear distance (m), applied load (N), and abrasive grain size (grid) were chosen as input parameters. The mass loss due to wearing was evaluated based on “the smaller the better”. All input parameters significantly influence the wear, but the highest effect was found with the wear (slip) distance. Also, a linear regression equation was obtained to estimate the mass loss between the parameters and the levels used.

中文翻译：

---

B4C-FeCrC复合层在干滑过程中的统计检验

在这项工作中，使用等离子转移弧 (PTA) 焊接方法在 AISI 430 不锈钢表面涂上过共晶 FeCrC 和纯 B ₄ C 粉末。此外，在这项工作中评估了涂层的微观结构、显微硬度和耐磨性。硬涂层在 750 之间形成高压和 1000来自 PTA 熔融涂层工艺的 HV 具有高能量输入（由于 PTA）。由于添加了FeCrC和B ₄ C，马氏体、奥氏体、M ₇ (CB) ₃、M23(CB) ₆、Cr(CB)、FeCr、Fe ₂ B、Fe ₃ C、Fe ₂ C、SiC和Fe ₃ (CB)相在涂层中形成，使得涂层非常硬。涂层的耐磨耗性采用田口法与 L16混合级正交索引。选择样品、磨损距离 (m)、施加载荷 (N) 和磨粒尺寸 (网格) 作为输入参数。磨损造成的质量损失以“越小越好”进行评价。所有输入参数都会显着影响磨损，但磨损（滑动）距离的影响最大。此外，获得了一个线性回归方程来估计参数和所用水平之间的质量损失。