Structure and Functional Properties of Surface Layer Produced on Cast Aluminium Light Alloys by Appliance of Anodisation

Abstract

The aim of the work is presents the influence of casting method and anodic treatment parameters on properties, thickness and structure of an anodic layer formed on aluminium casting alloys. Investigations were carried out on the laser profile measurement gauge MicroProf from company FRT, abrasive wear test was made with using ABR-8251 equipment delivered by TCD Teknologi ApS and microstructure investigations were made with using a light microscope equipped with an electronic camera configured with a computer on two casting aluminium alloys which both were founding by pressure die casting and gravity casting. The researches included analyse of the influence of chemical composition, geometry, roughness and abrasive wear resistant of anodic layer obtained on aluminium casts.Research limitations/implications Contributes to research on anodic layer for aluminium casting alloys. Practical implications Conducted investigations lay out the areas of later researches, especially in the direction of the possible, next optimization anodisation process of aluminium casting alloys, e.g. in the range of raising resistance on corrosion. Originality of this research was to describe the range of possible applications increases for example as materials on working building constructions, elements in electronics and construction parts in air and motorization industry in the aggressive environment.

Effect of CeO2@GNPs on the Corrosion Properties of 2024 Alloy

“…The morphologies of the 2024 Al alloy, 0.5 wt%GNPs/2024Al and 0.5 wt%CeO 2 @-GNPs/2024Al soaked in a 3.5 wt% NaCl solution for seven days are given in Figure 3. It can be observed that the surfaces of the samples were all covered by white flaky corrosion products or bright corrosion particles, which were presumed to be Al 2 O 3 , Al(OH) 3 and Mg(OH) 2 particles when using the EDS energy spectrum analysis and the characteristic peaks in the XRD patterns, as shown in Figure 3f [17]. However, the XRD patterns collected from those composites reinforced with the GNPs specimens did not reveal any peaks of GNPs.…”

“…Aluminum alloys are utilized extensively in various industries, e.g., automotive and aerospace fields, due to their excellent attributes such as low density, improved formability as well as good electrical conductivity [1][2][3]. With the development of industry, aluminum alloy and its composites are expected to demonstrate higher mechanical properties and improved application performance [4,5].…”