Corrosion Resistance

Ceresist conducted corrosion tests for the ceramic materials which are a part of our product profile. The tests were conducted using aggressive acids and bases at various temperatures.  The weight loss of test coupons clearly indicate that ceramics such as sintered silicon carbide are universally corrosion resistant materials.

 Corrosion Resistance Comparison of Various Materials

Fluid (Ambient Temp.)

Silicon Carbide

Zirconia

99.5 Alumina

90% Alumina

SS304

Alloy 600

HC 276

50% H2SO4

A

B

A

B

D

D

A

36% HCl

A

B

B

B

D

D

B

70% HNO3

A

B

A

B

D

A

D

50% H3PO4

A

B

B

B

C

A

A

26% NH4OH

A

A

B

C

A

A

A

30% NaOH

A

A

B

C

A

A

C

Key:
A – Not affected
B – Recommended for long-term service
C – Not recommended for service greater than one year
D – Not recommended for service greater than one month