Adhesion and mechanical properties of polyanionic cellulose-Al-Zr protective coatings

摘要

The paper reports on a new protective coating composed of polyanionic cellulose,Al and micro-additive Zr powders.The work has investigated a structure and phase composition of the composite coating.The study hasn't revealed any change of chemical composition in components of the overlay when coating and found macro-molecules of the polymer react with oxidic shells of particles due to hydrogen bonding.It has been established that adhesion strength of the coating increases 4 to 15 MPa when modifying an original suspension with zirconium micro-particles of less than 5 urn.The reason adhesion of the coating increases is reported to be agglomerates of Al and Zr fine fractions localized in hollows of the surface to be protected and on”adhesive-base”boundary.