microstructurE investigation and selected properties of Ni-cr-re coatings deposited by means of PLASMA spraying

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI:10.37904/metal.2021.4192

K. Tobota, Beata Skowrońska, M. Chmielewski, R. Świercz, Tadeusz Sałaciński, T. Chmielewski

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Abstract

The article presents selected results of microstructural investigation of Ni-Cr-Re coatings deposited by means of plasma thermal spray. The substrate made of 16Mo3 chromium molybdenum boiler steel was sprayed with a powder material of Oerlikon Amdry 4535 80% Ni, 20% Cr, 20÷45μm, to which 1% of metallic rhenium was added. Rhenium are an alloying additive that improves the heat resistance of alloys, creep, and high temperature oxidation resistance. Alloys with the addition of rhenium are widely used in aviation and power industry. Metallographic microscopic examinations, microhardness tests and surface profilometry were carried out. has a higher hardness than a substrate made of 16Mo3 steel, oscillating around the value of 230 HV0.2. The particles of Re are evenly dispersed, they can be easily identified in the SEM image due to the high density of rhenium. In the microscopic image, we observe them in the form of bright inclusions with dimensions of a few micrometres. The interface between the coating and the substrate shows no defects and discontinuities. The coating material evenly fills the unevenness of the substrate surface.

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等离子喷涂Ni-cr-re涂层的显微组织研究及性能选择

本文介绍了等离子体热喷涂Ni-Cr-Re涂层的显微组织研究的部分结果。在16Mo3铬钼锅炉钢的基体上喷涂了欧瑞康Amdry 4535 80% Ni, 20% Cr, 20÷45μm粉末材料，其中添加1%的金属铼。铼是一种合金添加剂，可以提高合金的耐热性、蠕变性和高温抗氧化性。添加铼的合金广泛应用于航空和电力工业。进行了金相显微检查、显微硬度测试和表面轮廓测量。具有比由16Mo3钢制成的衬底更高的硬度，在230 HV0.2附近振荡。Re的颗粒分布均匀，由于铼的高密度，在SEM图像中很容易识别。在显微图像中，我们观察到它们以几微米大小的明亮夹杂物的形式存在。涂层与基体之间的界面没有缺陷和不连续。涂层材料均匀地填充基材表面的不平整处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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METAL 2021 Conference Proeedings

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