Ni–Cr–Si–B alloy deposition on 304 ASS is executed by making use of automated processes like PTA, laser cladding, etc., which are supportive in the mass production. However, for repairment and job-specific works, such processes become more expensive and hence cost-effective pulse-GMAW process is proposed. The effect of current on the coating characteristics is investigated. Microstructure reveals a eutectic structure near interface, which changes to a hypereutectic near the top surface. γ-Ni, carbides and borides phases are observed in coating, which increases hardness (529.3 HV1.0) and wear resistance (20 times). The present study reveals an inverse relation of hardness and wear resistance with current due to increased iron content in coating at higher current which suppresses boride formation.

中文翻译：

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使用协同脉冲-GMAW工艺在304 ASS上沉积Ni-Cr-Si-B焊缝堆焊特性的性能

Ni-Cr-Si-B合金在304 ASS上的沉积是利用PTA、激光熔覆等自动化工艺进行的，有利于批量生产。然而，对于修理和特定工作的工作，这种工艺变得更加昂贵，因此提出了具有成本效益的脉冲 GMAW 工艺。研究了电流对涂层特性的影响。微观结构显示界面附近的共晶结构，在顶面附近变为过共晶。在涂层中观察到γ-Ni、碳化物和硼化物相，这增加了硬度（529.3 HV1.0）和耐磨性（20 倍）。本研究揭示了硬度和耐磨性与电流的反比关系，这是由于在较高电流下涂层中铁含量增加，从而抑制了硼化物的形成。