Aluminium oxide-based wear-resistant plate, and preparation method thereof

The invention belongs to the technical field of wear resistant material preparation, and more specifically relates to an aluminium oxide-based wear-resistant plate, and a preparation method thereof. The preparation method comprises following steps: pseudo-boehmite and an ammonium citrate solution are mixed, and alumina whisker is added so as to obtain an alumina sol; boric acid and aluminium nitrate are stirred and mixed, and an obtained mixture is mixed with silicon sol so as to obtain a liquid ceramic binder; the liquid ceramic binder and the alumina sol are subjected mixing spraying granulation, and are subjected to mixing ball milling with magnesium carbonate, zirconium silicate, and quartz sand so as to obtain a composite powder; the composite powder is subjected to secondary heating melting and pressing so as to obtain a blank material; and the blank material is subjected to crystallization, annealing, polishing, and cutting so as to obtain the aluminium oxide-based wear-resistant plate. The preparation