Knowledge

In a 20% sodium bicarbonate (NaHCO₃) slurry at 60°C, bicarbonate crystals precipitate as the solution is heated. These crystals have a Mohs hardness of 2.5–3.0, which is slightly below titan

In sodium metasilicate (Na₂SiO₃) solutions at 80°C, silicate ions polymerize on titanium surfaces. At pH >11, the silicate forms a continuous, non-porous, protective film with a thickness of 0.

In sodium metasilicate (Na₂SiO₃) solutions at 80°C, silicate ions polymerize on titanium surfaces. At pH >11, the silicate forms a continuous, non-porous, protective film with a thickness of 0.

In 50% sodium hydroxide at 120°C, PFA (perfluoroalkoxy) coatings protect titanium substrates from caustic attack. However, coating porosity (pinholes) allows the caustic solution to reach the tita

In boiling 37% hydrochloric acid at 85°C, PFA (perfluoroalkoxy) sheath heaters rely on the polymer's chemical resistance. However, the temperature at the resistance wire interface is higher th

PFA (perfluoroalkoxy) heater tubes are manufactured by extrusion. The cooling rate after extrusion determines the degree of crystallinity. Water quenching produces amorphous PFA with low crystallinity

In 70% nitric acid at 150°C and 5 bar pressure, PFA (perfluoroalkoxy) immersion heaters are subject to environmental stress cracking (ESC). The maximum allowable tensile stress to prevent ESC is 2

Paraffin wax is heated to 80°C for melting in various industrial processes including candle making, investment casting, and coatings. Titanium heat rods are suitable for this service at normal ope

Grade 12 titanium (Ti-0.3Mo-0.8Ni) is used for heater tubes in chloride-containing environments due to its improved pitting resistance. When the tube is bent to a tight radius of 3 times the tube diam

Sodium dichromate (Na₂Cr₂O₇) at 10% concentration and 70°C is a strongly oxidizing solution. Hexavalent chromium (Cr⁶⁺) is a powerful oxidizer with a standard reduction potential of +1.33 V for Cr

In electric titanium sheath heaters, power is often modulated using pulse-width modulation (PWM) to control temperature. The frequency of the PWM signal determines how rapidly the heater cycles on and

In 30% calcium chloride (CaCl₂) brine at 100°C containing a 2% magnesium impurity (as MgCl₂), magnesium hydroxide (Mg(OH)₂) scale precipitates preferentially over calcium carbonate or calcium sulf