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contributor authorKakudo, Hiromitsu
contributor authorTakada, Satoshi
contributor authorHirayama, Tomoko
date accessioned2023-11-29T19:39:11Z
date available2023-11-29T19:39:11Z
date copyright5/19/2023 12:00:00 AM
date issued5/19/2023 12:00:00 AM
date issued2023-05-19
identifier issn0742-4787
identifier othertrib_145_10_101702.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4294930
description abstractThe friction characteristics of SUS440C-Si3N4 lubricated by polytetrafluoroethylene (PTFE) under cryogenic environment have not been researched well. The lubrication mechanisms in such friction condition need to be clarified to improve the fidelity of performance modeling for ball bearings used in liquid rocket engine turbopumps. This research experimentally investigated the friction coefficient of bearing materials via PTFE lubrication under cryogenic environment to clarify the friction characteristics of cryogenic turbopump ball bearings. These experiments revealed the dependence of the contact pressure on the friction coefficient. By several analyses, it was found that lower friction and better wear-resistance characteristics were caused by PTFE film that strongly adhered to metal fluoride formed on the surface of SUS440C due to moderate friction energy.
publisherThe American Society of Mechanical Engineers (ASME)
titleFriction Characteristics of SUS440C/Si3N4 Lubricated by Polytetrafluoroethylene Under Cryogenic Environment
typeJournal Paper
journal volume145
journal issue10
journal titleJournal of Tribology
identifier doi10.1115/1.4062486
journal fristpage101702-1
journal lastpage101702-10
page10
treeJournal of Tribology:;2023:;volume( 145 ):;issue: 010
contenttypeFulltext


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