Influence of oxygen and humidity in atmospheres on friction and wear characteristics of TiN and TiC

• Autorzy: Yang L. , Yamamoto Y. , Hashimoto M.
• Konferencja: Problems of Non-Conventional Bearing Systems, NCBS '99
• Języki publikacji: EN

Abstrakty

EN

The friction and wear characteristics of hot pressed TiN and TiC were examined in dry and wet atmospheres of oxygen and argon using a pin/disc type friction tester. In an atmosphere containing oxygen or humidity, for both TiN and TiC, a surface film composed mainly of titanium oxides and/or their hydrates were produced during runs. The formation of the surface films resulted in suppressing brittle fracture of the rubbing surfaces and reducing wear amount by a factor of 4 to 30. TiC has high ability to form TiO2 with low shear strength compared to TiN. In contrast, TiN is expected to keep a TiO2 film firmly through TiO formed on the TiN surface as the substrate of TiO2, since a lattice constant and interatomic distances of TiN are nearly equal to those of TiO. Therefore, a low friction of about 0.1 was attained with a combination of TiC pins and TiN disc.

Słowa kluczowe

EN

friction; wear; titanium nitride; titanium carbide; surface film

PL

materiałoznawstwo

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: Applied Mechanics and Engineering
• Rocznik: 1999
• Tom: Vol. 4, no spec.
• Strony: 195--200
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Yang L.

autor

Yamamoto Y.

autor

Hashimoto M.

• Kyushu Institute of Design 9-1, Shiobaru 4-chome, Minami-ku, Fukuoka, 815-8540, JAPAN