论文部分内容阅读
通过热浸镀铝/微弧氧化复合工艺对H13模具钢进行表面改性以提高模具表面质量。在热浸镀铝过程中,将H13钢基体浸入710℃纯铝液6 min,得到了以Fe2Al5为主中间合金层,使得镀层与基体紧密结合。经过微弧氧化处理后,镀铝试样表面铝层转化为氧化铝陶瓷,主要由α-Al2O3和γ-Al2O3相组成。用带有能谱分析装置(EDX)的扫描电镜(SEM)、X射线衍射(XRD)分析了膜层的形貌、成分和相组成。微弧氧化陶瓷层主要由Al、O、Si元素组成,其中O、Si主要来源于硅酸盐电解液。
Surface modification of H13 die steel by hot-dip aluminum / micro-arc oxidation composite process to improve the mold surface quality. During the hot-dip aluminizing process, the H13 steel substrate was immersed in the pure aluminum solution at 710 ℃ for 6 min to obtain a Fe2Al5-based intermediate alloy layer, so that the coating and the substrate were tightly combined. After the micro-arc oxidation treatment, the aluminum layer on the surface of the aluminized sample is transformed into alumina ceramic, which is mainly composed of α-Al2O3 and γ-Al2O3 phases. The morphology, composition and phase composition of the films were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD) with an energy dispersive spectrometer (EDX). Micro-arc oxidation ceramic layer is mainly composed of Al, O, Si elements, of which O, Si is mainly derived from the silicate electrolyte.