Abstract

Three-dimensional capillary porous (TCP) plasma coatings, which are formed by spraying a bronze powder with a particle size of 20–32 and 71–100 μm on threaded profiles with angles of 34° and 60° and a depth of 2 and 1.85 mm, respectively, have been developed and studied. The coatings are designed to form effective heat-exchange surfaces with a change in the state of aggregation of a refrigerant. TCP coatings with a porosity of 15–32%, a thickness of up to 400 μm, a ridge width up to 160 μm, and a valley width up to 100 μm are studied. The structure of a bronze TCP coating makes it possible to increase the contact line normalized relative to the initial thread line to 14.805 and that relative to the cylindrical surface before threading to 24.24.

中文翻译：

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三维毛细管多孔等离子青铜涂层的结构

摘要

三维毛细管多孔 (TCP) 等离子涂层，通过将粒度为 20–32 和 71–100 μm 的青铜粉末喷涂在角度为 34° 和 60°、深度为 2 和 1.85 的螺纹型材上形成mm，分别已被开发和研究。涂层被设计成随着制冷剂聚集状态的变化而形成有效的热交换表面。研究了孔隙率为 15-32%、厚度高达 400 μm、脊宽高达 160 μm 和谷宽高达 100 μm 的 TCP 涂层。青铜 TCP 涂层的结构使得可以将相对于初始螺纹线标准化的接触线增加到 14.805，相对于螺纹前的圆柱表面标准化的接触线增加到 24.24。