Heterovalent Zr4+-Cu2+ substitution in zirconium pyrophosphate: From theoretical models to synthesis and utilization

Effects of CaO and MgO on Anticorrosive Performance of Aluminum Dihydrogen Tripolyphosphate on Mild Steel

“…Lead- and chromate-containing pigments have excellent anticorrosive characteristic, but the use thereof has been regulated while taking into consideration, for example, environmental pollution and hygiene. − Most particularly, it is proved that they may hurt the human health . For this reason, borates (i.e., zinc borate, barium metaborate), − molybdates (basic zinc molybdate, basic calcium zinc molybdate), − calcium-exchange silica, , or phosphates − as well as with various types of phosphate powders − have been exploited as environmentally pollution-free alternative pigments. Although these alternatives are much less of a problem concerning the safety, their anticorrosive properties are in general inferior to those of lead- and chromate-containing pigments. , Furthermore, they require a high production cost, and their physical properties, dispersibility, and storage stability still need further improvement to meet the requirements.…”