Мікротвердість поверхневих шарів гартованого склах
The value of microhardness of the surface layers of 6 mm float glass, tempered by contact and by air method by etching in a mixture of fluoride and sulfuric acids, is researched. It was established that the microhardness value depends on the method of tempering and thickness of the etched layer. The optimal parameters of the microhardness measure of 6 mm float glass are selected and thickness of the etched layer which causes the relaxation of residual tensions is indicated.