Improving The Tribological Characteristics of In-House Made Acid-Activated Iraqi Bentonite Lubricating Greases Using Graphite and Polytetrafluoroethylene Nanoplatelets as Additives. DJES [Internet]. 2025 Mar. 1 [cited 2025 Apr. 18];18(1):219-36. Available from: https://djes.info/index.php/djes/article/view/1470