Knowledge

Potassium acetate (KAc) runway deicers are employed at 25% concentration at temperatures down to -10°C. Storage tanks are equipped with titanium electric heaters to prevent freezing. During active

Total organic carbon (TOC) in deionized water systems may be attributed to the breakdown of ion exchange resins, biofilm growth, or feedwater contamination, particularly at 90°C. In such water the

Tube ovality after bending-the deviation from a perfect circular cross-section-concentrates heat flux at the bend apex. Higher ovality (2% vs. 0.5%) increases the local heat flux by 10–25% due t

In a 35% methanol/water mixture at 65°C, Grade 2 titanium exhibits uniform thinning at 0.02–0.05 mm per year. The addition of 0.5% sodium hydroxide (NaOH) raises the pH to 10–11. At th

In 50% potassium carbonate (K₂CO₃) at 110°C, a protective potassium titanate (K₂TiO₃) layer forms on the titanium surface. Dissolved oxygen (DO) is critical for titanate formation. At low DO (0.5

In 5% sodium tartrate at 103°C (boiling), the tartrate ion (C₄H₄O₆²⁻) is a strong chelating agent for titanium. Unlike chloride or fluoride which cause pitting, tartrate forms soluble titaniu

In zinc sulfate electroplating, stray currents from adjacent busbars can polarize the titanium heater. At low current density (0.5 A/dm²), stray currents cause scattered, shallow pits with a dept

Post-weld pickling in a nitric-hydrofluoric acid mixture (20% HNO₃ + 3% HF) removes the oxygen-enriched alpha-case layer from titanium welds. A short pickle of 5 minutes removes 10–20 µm o

Sodium persulfate (Na₂S₂O₈) is a strong oxidizer with a standard reduction potential of 2.01 V for S₂O₈²⁻/SO₄²⁻, stronger than nitric acid. On titanium, persulfate causes transpassive dissol

In 25% sodium hydroxide at 90°C, silica (SiO₂) reacts with titanium to form sodium titanate (Na₂TiO₃) and sodium silicate scales. These scales have very low thermal conductivity of 0.5–1.5 W

In 30% sodium thiocyanate (NaSCN) at 80°C, thiocyanate anions (SCN⁻) adsorb strongly onto the titanium surface, forming a protective barrier. When chloride ions are present, SCN⁻ competes for surf

In 3% NaCl at 80°C, titanium exhibits characteristic electrochemical noise before pitting. Metastable pits produce short, low-amplitude current spikes of 0.1–1 µA with a duration of 0.