Acid Resistance

Acid Resistance


the ability of materials to resist the destructive effect of acids.

Acid resistance depends on the nature of the material, the redox properties of the medium, the nature of the anions, and the concentration and temperature of the acids. For example, chromium and chromium steels are stable in 40 percent nitric acid but undergo rapid corrosion in 40 percent sulfuric acid. The acid resistance of materials decreases with temperature. It is important to differentiate between acid resistance in liquid and vapor-gas phases and at the boundary of the two. The acid resistance of metallic materials is determined by loss of mass per unit area (9 per sq m per hr). The acid resistance of nonmetallic organic materials is gauged according to the degree of swelling and the change in mechanical properties (strength, yield point, ultimate elongation). The acid resistance of nonmetallic inorganic materials is determined by the change in mass of the pulverized material after acid treatment.


acid resistance

The degree to which a surface, such as porcelain enamel, will resist attack by acids.
References in periodicals archive ?
Limited Tenders are invited for Supply of acid resistance castable
Ceftazidime clavulanic acid resistance was found in 25% of the samples.
28] It is believed that nalidixic acid resistance is a surrogate marker for ciprofloxacin resistance, as clinical failures have been documented in cases where ciprofloxacin has been used (based on susceptibility) for nalidixic acid resistant strains.
The resistance to chemical attack of test specimen be assessed by conduct acid resistance examination and sulphate resistance test.
Other benefits of modified epoxies can include improved chemical, hydrocarbon, and acid resistance.
Distribution of fusidic acid resistance determinants in m ethicillin-resistant Staphylococcus aureus.
specialty flooring products include Electrostatic Dissipative Flooring (ESD), low temperature cure, high acid resistance, high temperature resistance, and underwater curable epoxy paste for structural repairs.
Er:YAG laser irradiation affected acid resistance sub-surface dentin.
Because resistance to nalidixic acid is frequently associated with decreased susceptibility to fluoroquinolones, nalidixic acid resistance must be detected to monitor the emergence of highly resistant strains (14).