Lubricating greases with varying proportions of gold mine tailings or SiO2 as additives were prepared. and their friction and wear performance were evaluated using a four-ball tribometer. Scanning electron microscopy and three-dimensional surface profilometry were employed to analyze the thickener properties and wear patterns on the steel balls. The results indicated that the addition... https://foldlyers.shop/product-category/notebook-briefcases/