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Fretting wear mechanisms in contact of steel and silicon nitride ceramics : doctoral thesisKalin, MitjanIn this thesis, fretting wear mechanisms in air-dry and oil-lubricated contacts of steel against silicon nitride were studied, with a special emphasis on the maximum temperature rise in the contact ... and the influence of mechanical pressure and plastic deformation on the tribochemical reactions. Tribochemical reactions between the ceramics and metals under various sliding or fretting conditions have been reported many times to critically determine the wear behaviour but the details of the mechanisms and chemical reactions are still not fully understood. That is to say, different and contradictory levels of importance relating to the thermal and mechanical effects on the tribochemical reactions have been reported. Therefore, a number of fretting experiments including various surface analyses like AES and TEM are presented in this thesis. In order to verify the suggested wear behaviour, calculations of surface temperature rise according to some of the most cited modern theoretical models and a number of static interaction couples experiments were performed. In oil-lubricated fretting a transition from mechanical to tribochemical wear, i.e. carbonisation of the steel was observed with increasing displacement amplitude resulting in significantly less wear. In dry fretting, where spalling of the oxidised silicon nitride ceramics dominated, two orders of magnitude higher wear was obtained than in lubricated fretting, appearing as monotonical progress of wear loss with increasing displacement amplitude. Mechanical effects (pressure and plastic deformation) were excluded from having a significant effect on the tribochemical reactions, whereas the high temperature phase transformed material (HTPTM) fretting wear model was proposed for explaining the behaviour under, both dry and lubricated fretting conditions.Vrsta gradiva - disertacija ; neleposlovje za odrasleZaložništvo in izdelava - Ljubljana : [M. Kalin], 1998Jezik - angleškiCOBISS.SI-ID - 2940699
Avtor
Kalin, Mitjan
Drugi avtorji
Vižintin, Jože |
Jahanmir, Said
Teme
Materiali |
Obraba |
Disertacije |
tribologija |
freting obraba |
keramika |
silicijev nitrid |
jeklo |
tribokemija
Knjižnica/institucija |
Kraj | Akronim | Za izposojo | Druga zaloga |
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Fakulteta za strojništvo, Ljubljana | Ljubljana | FSLJ |
v čitalnico 1 izv.
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Narodna in univerzitetna knjižnica, Ljubljana | Ljubljana | NUK |
v čitalnico 1 izv.
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Univerzitetna knjižnica Maribor | Maribor | UKM |
v čitalnico 1 izv.
|
Vnos na polico
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Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Kalin, Mitjan | 14556 |
Vižintin, Jože | 00812 |
Vir: Osebne bibliografije
in: SICRIS
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