Tham khảo tài liệu 'tribology - lubricants and lubrication part 17', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 312 Tribology - Lubricants and Lubrication The SEM images of wear on the test cone from pitting tests for 100Cr6 steel covered with WC C coating are presented in Fig. 10. a b c Fig. 10. The pitting wear on the test cone a upper view b cross-section c enlargement of selected fragment WC C coated cone RL-144 4 mineral oil The results indicate beneficial impact of low friction coatings on pitting wear . MoS2 Ti coating . The presented method for testing pitting in cone-three balls tribosystem can be applied to testing fatigue wear of various materials surface coatings as well as various lubricants. In comparison to other existing methods the new method gives better resolution and is time-and cost-effective. The New Methods for Scuffing and Pitting Investigation of Coated Materials for Heavy Loaded Lubricated Elements 313 T-02U Universal Four-Ball Testing Machine The methods for evaluation of pitting and scuffing resistance of PVD CVD coatings is realised by means of T-02U Universal Four-Ball Testing Machine Michalczewski et al. 2009b . The photo of the machine is presented in Fig. 11. The tribotester is equipped with a computer-aided system of control and measurements. a b Fig. 11. T-02U Universal Four-Ball Testing Machine a photograph b computer screen during data .
