Alumina/zirconia materials are amphoteric oxides. Their chemical activity is much higher than that of silicon carbide materials. They are more susceptible to corrosion and are not resistant to other highly corrosive agents such as hydrofluoric acid. However, silicon carbide has stable chemical properties and can even Resistant to hydrofluoric acid corrosion.

4.Easy to clean

First of all, the isoelectric point of silicon carbide nanoparticles is near pH 2.4. In a wide pH range, the interface between the separation layer and the filter medium can maintain a negative charge environment to form a special anti-fouling and oil-repellent effect, and the colloid and suspended matter , oil droplets and other substances are not easy to adhere to the membrane surface, and backwashing can easily "peel" colloids, suspended solids, oil droplets and other substances from the membrane surface; secondly, the trapezoidal pore structure and the high porosity of the silicon carbide membrane (fewer dead pores, Good filter channel connectivity) can increase the backwash effect. These features make it a easy cleaning plate.

5. Longevity

Silicon carbide (SiC) ceramic membranes are known for exceptional longevity due to several key characteristics:

5.1.   Chemical Resistance

• Highly inert across a wide pH range (0–14), withstanding both strong acids and alkalis
• Resistant to oxidation and most organic solvents
• Maintains integrity in aggressive chemical cleaning cycles

5.2 Mechanical Durability

• Extremely hard (Mohs hardness ~9.5, close to diamond)
• High flexural and compressive strength
• Resistant to abrasion from particulate-laden feeds

5.3 Thermal Stability

• Operates continuously at temperatures exceeding 300°C (some grades to 1000°C+)
• Withstands rapid thermal cycling and steam sterilization without cracking or degradation

5.4 Fouling Resistance

• Hydrophilic surface reduces organic fouling
• Smooth, low-roughness surface limits particle adhesion
• Tolerates aggressive backwashing and chemical regeneration

5.5 Structural Integrity Over Time

• No plasticizer migration or polymer degradation (unlike polymeric membranes)
• Maintains pore structure and permeability over many years
• Typical service life of 10–20+ years in industrial applications—often 2–5× longer than polymeric alternatives