Space aluminum shower oxidation film peeling? Uncover the key factors and selection guide behind it
Release time:
2025-06-30
Recently, there's been a surge in consumer concern regarding the susceptibility of the anodized coating on space aluminum showerheads to peeling. As a popular bathroom product, space aluminum showerheads hold a significant market share due to their lightweight, corrosion-resistant, and cost-effective nature. The stability of the anodized coating directly impacts the product's lifespan and user experience.
I. Anodized Coating Stability: Process and Environment are Key
The anodized coating on the surface of space aluminum showerheads is an aluminum oxide film formed through an anodizing process. It chemically bonds with the aluminum material itself, resulting in high hardness (Mohs hardness of 3-4, approaching that of glass), and generally strong stability.
However, some consumers have reported the peeling of the anodized coating on their space aluminum showerheads. This is primarily caused by two factors. One is manufacturing defects: inferior products have insufficient coating thickness (qualified products should have a thickness of 10-15μm; those below 8μm are easily worn); non-standard electrolytic processes, such as imbalanced electrolyte concentration or insufficient oxidation time, result in a loose film structure and reduced adhesion; inadequate surface pretreatment, where oil stains and impurities on the aluminum material are not cleaned properly, also affects the bonding between the anodized coating and the substrate, causing local peeling.
The other factor is improper use and cleaning. Using steel wool, blades, or other hard objects to scrape the surface will directly damage the anodized coating; prolonged contact with strong acids like toilet bowl cleaners or strong alkalis like caustic soda will corrode the coating; space aluminum has relatively weak high-temperature resistance, and prolonged contact with water above 80℃ or frequent hot and cold alternation may cause the film layer to crack and peel due to uneven thermal expansion and contraction.
Two Methods to Identify Anodized Coating Quality
With the wide variety of space aluminum showerheads on the market, how can consumers judge the quality of the anodized coating? Here are some suggestions:
First, observe the surface. High-quality products have smooth and uniform surfaces, free of pinholes, bubbles, or color differences, with consistent reflection under light. Second, perform a light scratch test. Lightly scratch the surface with a fingernail or a soft key; if there are no obvious marks, the film layer hardness is qualified. However, avoid using hard objects for forceful testing to prevent damage to the product. Then, check the test report. Reputable brands will provide data such as anodized coating thickness and salt spray test results. The longer the salt spray resistance time (generally ≥48 hours), the stronger the product's corrosion resistance.
III. Qualified Products Can Last 8-10 Years with Proper Maintenance
It is understood that under normal use—avoiding scratches from hard objects, contact with strong corrosive substances, and extreme temperature changes—the anodized coating of a qualified space aluminum showerhead can remain stable for 8-10 years.
In terms of maintenance, avoid spraying strong acid or alkali cleaning agents directly onto the showerhead surface to prevent damage to the anodized coating; if not used for a long time, turn off the water valve and drain the water in the pipe to prevent low-temperature cracking; regularly (every 3-6 months), soak the water outlet holes in white vinegar for 10 minutes to effectively remove scale.
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