PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYS
In order to improve the tribological performance of the parts of mine internal combustion engine in wide temperature domain, cobalt matrix composites with different proportions of solid lubricants（7%MoS<sub>2</sub>+7%ZnO, 9%MoS<sub>2</sub>+ 5%ZnO, 11%MoS<sub>2</sub&g...
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Editorial Office of Journal of Mechanical Strength
2022-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.02.011 |
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| _version_ | 1841536025370820608 |
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| author | GUO XiaoE ZHAO JinLu |
| author_facet | GUO XiaoE ZHAO JinLu |
| author_sort | GUO XiaoE |
| collection | DOAJ |
| description | In order to improve the tribological performance of the parts of mine internal combustion engine in wide temperature domain, cobalt matrix composites with different proportions of solid lubricants（7%MoS<sub>2</sub>+7%ZnO, 9%MoS<sub>2</sub>+ 5%ZnO, 11%MoS<sub>2</sub>+ 3%ZnO） were prepared by hot pressing sintering technology. The tribological properties of the composites at room temperature, 200℃, 400℃, 600℃ and 800℃ were tested by high temperature friction and wear testing machine. The microstructure, phase composition and wear mechanism of the materials were studied. The results show that the three materials show similar trends of friction coefficient and wear rate. MoS<sub>2</sub> effectively improves the tribological properties of composites in a wide temperature range. The frictional and anti-wear effect of ZnO mainly plays a role at 800℃. The tribological properties over a wide temperature range are attributed to the sulfide films at moderate and low temperatures and the oxide films composed of ZnO, Co<sub>2</sub>O<sub>3</sub> and chromate at high temperatures. The wear mechanism is abrasive wear at low temperature and oxidation wear at high temperature. The results show that the materials containing 9%MoS<sub>2</sub>+ 5%ZnO exhibit the best tribological properties over a wide temperature range. |
| format | Article |
| id | doaj-art-7b456c99fc1e46afa6885baeace21bc0 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-7b456c99fc1e46afa6885baeace21bc02025-01-15T02:24:28ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692022-01-014433534029911105PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYSGUO XiaoEZHAO JinLuIn order to improve the tribological performance of the parts of mine internal combustion engine in wide temperature domain, cobalt matrix composites with different proportions of solid lubricants（7%MoS<sub>2</sub>+7%ZnO, 9%MoS<sub>2</sub>+ 5%ZnO, 11%MoS<sub>2</sub>+ 3%ZnO） were prepared by hot pressing sintering technology. The tribological properties of the composites at room temperature, 200℃, 400℃, 600℃ and 800℃ were tested by high temperature friction and wear testing machine. The microstructure, phase composition and wear mechanism of the materials were studied. The results show that the three materials show similar trends of friction coefficient and wear rate. MoS<sub>2</sub> effectively improves the tribological properties of composites in a wide temperature range. The frictional and anti-wear effect of ZnO mainly plays a role at 800℃. The tribological properties over a wide temperature range are attributed to the sulfide films at moderate and low temperatures and the oxide films composed of ZnO, Co<sub>2</sub>O<sub>3</sub> and chromate at high temperatures. The wear mechanism is abrasive wear at low temperature and oxidation wear at high temperature. The results show that the materials containing 9%MoS<sub>2</sub>+ 5%ZnO exhibit the best tribological properties over a wide temperature range.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.02.011Hot pressing sinteringSolid lubricantFrictionWear |
| spellingShingle | GUO XiaoE ZHAO JinLu PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYS Jixie qiangdu Hot pressing sintering Solid lubricant Friction Wear |
| title | PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYS |
| title_full | PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYS |
| title_fullStr | PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYS |
| title_full_unstemmed | PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYS |
| title_short | PREPARATION AND TRIBOLOGICAL PROPERTIES OF WIDE TEMPERATURE DOMAIN MINERAL ALLOYS |
| title_sort | preparation and tribological properties of wide temperature domain mineral alloys |
| topic | Hot pressing sintering Solid lubricant Friction Wear |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.02.011 |
| work_keys_str_mv | AT guoxiaoe preparationandtribologicalpropertiesofwidetemperaturedomainmineralalloys AT zhaojinlu preparationandtribologicalpropertiesofwidetemperaturedomainmineralalloys |