Effects of MoS2 and WS2 on the matrix performance of WC based impregnated diamond bit
| Autor: | Chenglong Li, Songcheng Tan, Longchen Duan, Minou Rabiei, Bingsuo Pan, Wenjiao Zhang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Impact toughness Scanning electron microscope Mechanical Engineering Diamond 02 engineering and technology Surfaces and Interfaces engineering.material 021001 nanoscience & nanotechnology Surfaces Coatings and Films Abrasion (geology) Matrix (chemical analysis) Bit (horse) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials engineering Composite material 0210 nano-technology Coefficient of friction Dry lubricant |
| Zdroj: | Tribology International. 131:174-183 |
| ISSN: | 0301-679X |
| Popis: | MoS2 and WS2 with different concentrations were added to a hot-pressing WC based impregnated diamond bit matrix, in order to investigate the effects of the solid lubricants on the mechanical, wear and frictional properties of the self-lubricating composites. Hardness, flexure strength, impact toughness, abrasion weight loss and coefficient of friction were measured by a series of tests. Also, the full broken section morphologies of the self-lubricating composites after the flexure strength test, as well as the wear surfaces were observed and analyzed by scanning electron microscope. Test results indicate that the effects of MoS2 and WS2 on the mechanical, wear and frictional properties of the WC based IDB matrix are similar, while WS2 obtains a better self-lubricating performance than MoS2. |
| Databáze: | OpenAIRE |
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