Oxidation or oxide materials in the machining zone in superabrasive grinding—A factor of influence on the grinding performance

Поліпшення Експлуатаційних Характеристик Алмазного Шліфувального Інструменту Модифікацією Поверхні Зерен Синтетичних Алмазів

“…It can be seen from the above that various oxides are used to modify the surface of diamonds: WO 2 , NiO and CuO, Al 2 O 3 , SiO 2 and B 2 O 3 . At the same time, in [12], the authors have stated that for the cutting processes, oxygen is an important factor in terms of modifying the tribotechnical characteristics of contact surfaces. The oxide layers arising under the action of oxygen or its compounds on contact surfaces signifi cantly reduce friction.…”

“…Therefore, oxides have many characteristic features, the analysis of which can be useful, for example, for explaining the behavior of ceramics when heated or for choosing oxides to modify the surface of grains with oxides. Given the experimental data obtained by the authors [12] on the introduction of oxides into the contact zone of the grinding wheel and the machined product, as well as the correlation dependences obtained above, it has been determined that for the modifi cation of the grains of grinding powders, the use of oxides with a CTE higher than 10  10 -6 , deg -1 is impractical. Other limitations, according to the authors, are limitations on the melting temperature of such oxides -at most, 2300 K, see Fig.…”