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Effect of Speed and Pressure on Dry Sliding Interactions of Alumina against Steel
Author(s) -
Ravikiran A.,
Nagarajan V. S.,
Biswas S. K.,
Bai B. N. Pramila
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08808.x
Subject(s) - compaction , materials science , range (aeronautics) , metal , composite material , high speed steel , dry friction , metallurgy
Sliding of alumina (87%) pins against a hardened steel disk over a range of pressures (3.3–30.0 MPa) and speeds (0.1–12.0 ms ‐1 ) has been studied. Four different regions (R1, R2, R3, and R4) of friction as a function of speed have been identified. R1 and R3 exhibit single‐valued friction while in R2 and R4 the friction exhibits dual behavior. The speed range over which these regions prevail is sensitive to the pressure. R1 and R2 are low‐speed and low‐temperature regions, and in both, metal transfer and formation and compaction of y‐Fe 2 O 3 occur. R3 and R4 are associated with high speeds and high interface temperatures. Formation of FeO, FeAl 2 O 4 , and FeAlO 3 has been observed. The implications of the tribochemical interactions on friction and wear characteristics are discussed.