Abstract

In this study, a mixture of 93% Ni–7% Mg and 97% Ni–3% Mg powders were produced by the TM method and the diffusion kinetics, surface properties of borided nickel–magnesium alloy at different temperatures and times were investigated. The samples were sintered at 530°C. The boriding process was performed Ekabor II boron powder in atmospheric furnace environment at 900, 950 and 1000°C temperatures for 1.5, 3.0 and 4.5 h. The phases in the boride layer were found by means of CuK_α radiation in XRD. XRD analysis of NiB, Ni₂B and Ni₃B phases were obtained. The hardness of borides layer formed on surface after boriding of the 93% Ni–7% Mg and 97% Ni–3% Mg alloys substrate ranged from 1518 to 1964 HV_0.05, whereas value of the unborided nickel was 112–136 HV_0.05. The boron activation energy was estimated as equal to 136.506 and 158.843 kJ/mol for the borided 93% Ni–7% Mg and 97% Ni–3% Mg alloys, respectively.

中文翻译：

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硼化镍镁合金的表征与扩散动力学

摘要

在这项研究中，通过TM方法生产了93％Ni–7％Mg和97％Ni–3％Mg粉末的混合物，并研究了硼化镍镁合金在不同温度和时间的扩散动力学，表面性能。样品在530℃下烧结。硼化处理是在大气炉环境中的Ekabor II硼粉中于900、950和1000°C的温度下进行1.5、3.0和4.5 h。在硼化物层将各相的Cu手段发现ķ _α在XRD辐射。获得了NiB，Ni ₂ B和Ni ₃ B相的XRD分析。93％Ni–7％Mg和97％Ni–3％Mg合金的基体硼化后在表面形成的硼化物层的硬度范围为1518至1964 HV _0.05，而未硼化镍的值为112–136 HV _0.05。对于硼化的93％Ni-7％Mg和97％Ni-3％Mg合金，硼活化能估计分别等于136.506和158.843 kJ / mol。