热喷涂气缸壁涂层的微观结构和轮廓分析

Q3 Engineering

Pollack Periodica Pub Date : 2024-05-02 DOI:10.1556/606.2024.01076

Akos Kokai, Maria Berkes Maros

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引用次数: 0

摘要

汽缸孔涂层被广泛应用于汽车内燃机，以取代汽缸套。在大气等离子喷涂过程中，涂层会被氧化，并受涂层原料钢粉中 Si 含量的控制。这种现象会影响工艺流程、微观结构和所形成涂层的性能。本研究旨在探讨工业中常用的两种商用钢粉中的 Si 含量如何影响实践中观察到的不良后果，如粉末喷嘴堵塞或涂层硬度变化大。分析和工业实验表明，增加硅含量会大大加剧这些不良现象。

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Microstructural and profilometric analysis of thermally sprayed cylinder wall coatings

Cylinder bore coatings are widely used in automotive internal combustion engines to replace cylinder liners. During the atmospheric plasma spraying process, the coatings are oxidized and controlled by the Si content of the steel powder used as the coating raw material. This phenomenon affects the technological process, the microstructure, and the properties of the formed coatings. The research aims to investigate how the Si content of two commercial grades of steel powder commonly used in industry affects the undesirable consequences observed in practice, such as clogging of powder nozzles or large variations in coating hardness. The analyses and industrial experiments show that increasing the Si content can contribute significantly to these undesirable phenomena.

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来源期刊

Pollack Periodica Engineering-Civil and Structural Engineering

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： Pollack Periodica is an interdisciplinary, peer-reviewed journal that provides an international forum for the presentation, discussion and dissemination of the latest advances and developments in engineering and informatics. Pollack Periodica invites papers reporting new research and applications from a wide range of discipline, including civil, mechanical, electrical, environmental, earthquake, material and information engineering. The journal aims at reaching a wider audience, not only researchers, but also those likely to be most affected by research results, for example designers, fabricators, specialists, developers, computer scientists managers in academic, governmental and industrial communities.