“The XRD phase identification package resolved lepidocrocite and goethite in our passivated 316L samples — something other labs missed. The Rietveld refinement was spot on.”
— Dr. Alpa Radhakrishnan, Corrosion EngineerEach technique targets a specific layer of degradation — from surface chemistry to bulk crystallography and electrochemical stability — giving you a complete picture of passivated steel performance.
Monochromated Al Kα X-ray source resolves chemical shifts down to 0.1 eV. Detects oxide, hydroxide, and carbide species in the outermost 10 nm of passive films. Depth profiling via argon sputtering reveals layer-by-layer composition changes after exposure to chloride or acidic environments.
Identify passive film breakdown precursors before visible corrosion
Bragg-Brentano geometry with Cu Kα radiation. Full-pattern Rietveld refinement quantifies crystalline phases in corrosion scales — lepidocrocite, goethite, magnetite, chromium carbides. Automated ICDD PDF-4+ matching detects phases down to 1 wt% in multi-phase mixtures.
Map corrosion product evolution from early rust to mature scale
Cyclic potentiodynamic polarization measures pitting potential, passive current density, and repassivation behavior. Electrochemical impedance spectroscopy (EIS) extracts charge transfer resistance and coating porosity. Tests run in simulated service environments (chloride, sulfate, pH 3–10).
Quantify protective lifetime of passivated surfaces under service conditions
Surface chemistry (XPS), crystalline phase (XRD), and electrochemical parameters (EIS) are cross-referenced per sample. Reports include overlay plots, phase fraction tables, and degradation trend analysis. Raw data files (VAMAS, XRDML, .dta) provided for internal validation.
Single-source report linking chemistry, structure, and corrosion kinetics
Explore complementary techniques for evaluating passivated steel alloys and long-term structural degradation.