Research on high temperature erosion wear behavior of surface strengthened superalloy for underground coal gasification

IF 2 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Mechanical and Materials Engineering Pub Date : 2026-03-26 Epub Date: 2026-04-30 DOI:10.1186/s40712-026-00446-5

Xiangyi Ren, Gang Zhao, Jiakun Yang, Zhiyuan Li, Jianjun Wang, Lihong Han

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Abstract

Superalloy is the only utilizable material for underground coal gasification channel joint. In this research, the high temperature gas flow erosion wear behavior of superalloy with strengthened layer by boronizing is systematically investigated, including microstructure and hardness. The results reflect that boronizing process can effectively strengthen the surface of superalloy. The high temperature gas erosion wear testing results indicate that boronized layer on superalloy has obvious effect on protecting matrix from high temperature erosion. GH5188 possesses the best high temperature erosion wear resisitance. Before boronizing, wear mechanism of superalloy GH3536 is surface oxidation with spalling of oxide layer by particles impacting, and wear mechanism of superalloy GH5188 and boronized superalloy GH3536 is irregular micro-cutting by high speed particles.

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煤地下气化用表面强化高温合金高温冲蚀磨损性能研究

高温合金是地下煤气化通道接头唯一可用的材料。本研究系统地研究了渗硼强化层高温合金的高温气流冲蚀磨损行为，包括显微组织和硬度。结果表明，渗硼处理能有效强化高温合金的表面。高温气体冲蚀磨损试验结果表明，高温合金渗硼层具有明显的保护基体免受高温冲蚀的作用。GH5188具有最佳的高温侵蚀磨损性能。高温合金GH3536在渗硼前的磨损机制为颗粒撞击导致表面氧化氧化层剥落，高温合金GH5188和渗硼高温合金GH3536的磨损机制为高速颗粒的不规则微切削。

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