Abstract

The article investigates the structural phase state of a thermal spray coating of the pseudoalloy 08G2S + AK12, sprayed by high-speed metallization in the initial state and after heat treatment at 510, 530, and 550°C over the course of 1 h. It is established that deposition of the pseudoalloy 08G2S + AK12 leads to the formation of a coating with low FeO and Fe₃O₄ contents. It is shown that the sprayed coating has a wear resistance 3.6 times higher than a 08G2S steel coating. Subsequent annealing of 08G2S + AK12 coatings at 510, 530 and 550°C leads to the release of the intermetallic phases Al₅Fe₂ and AlFe₃ and 2.7-fold higher wear resistance of the coatings under dry friction compared to untreated 08G2S + AK12. Heat treatment of the sprayed pseudoalloy at 530°C increases its wear resistance under boundary friction conditions by up to 1.35 times compared to the initial state.

中文翻译：

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热处理对伪合金08G2S + AK12的热喷涂层结构，相组成和耐磨性的影响

摘要

本文研究了伪合金08G2S + AK12的热喷涂涂层的结构相态，该涂层在初始状态下以及在510、530和550°C的热处理过程中，在1小时的时间内通过高速金属化喷涂而成。已经确定，伪合金08G2S + AK12的沉积导致形成具有低FeO和Fe ₃ O ₄含量的涂层。结果表明，喷涂涂层的耐磨性是08G2S钢涂层的3.6倍。随后在510、530和550°C下对08G2S + AK12涂层进行退火导致金属间相Al ₅ Fe ₂和AlFe ₃的释放与未经处理的08G2S + AK12相比，在干摩擦条件下涂层的耐磨性高2.7倍。与初始状态相比，喷涂的伪合金在530°C的热处理在边界摩擦条件下的耐磨性提高了1.35倍。