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, 92(2): 145-164. [32] Atchley S C, Ball N H, Hunt L E. Reservoir characterization and facies prediction within the Late Cretaceous Doe Creek Member, Valhalla field, west-central Alberta, Canada[J......
γ brasses[J]. Acta Crystallographica Section B, 1991, 47(6): 835-843. [47] KOUTERS M H M, GUBBELS G H M, YUAN C A. Characterization of intermetallic compounds in Cu-Al ball bonds: mechanical......
. Two test specimens were required to determine a friction coefficient. One specimen was pulled between cylindrical pins supported by ball or roller bearings. Friction on the bearings was considered......
’ Society, 2005, 82(4): 285-292. [43] NEFEDOV Y U. Corrosion resistance of oil piping [J]. Zashch Metal, 1988, 24(4): 634-636. [44] ROUNDS F G. Effects of base oil viscosity and type on bearing ball......
–sulfur–water systems at 298 K [J]. Hydrometallurgy, 2001, 106: 104–112. [47] BALL J W, NORDSTROM D K. Critical evaluation and selection of standard state thermodynamic properties for chromium metal......
) spectroscopy and X-ray diffraction (XRD) analysis were used to identify the phases in the alloys. Hardness testing was carried out on a digital Rockwell hardness tester using a ball of 1.58 mm diameter......
between an original sphere ball and the corresponding quasi-elliptical particle are given by ...; (2) where R1 and R2 are the radii of the overlapped sphere balls shown in Fig. 2(b); Rb is the radius of the original sphere ball; Se is the major-minor axis......
, supplied by Vale, Japan) were mixed by cylindrical table mixer for 6 h using zirconia balls. A 1:5 mass ratio for ball to powder was selected. To consolidate the mixed powders, spark plasma sintering......
to this plate via two ball bearings. This shaft could rotate by means of an electric motor (2.2 kW, 2840 r/min) via two pulleys and a belt. A steel hammer was attached to the shaft through a hole......
were investigated by ball-on-disk tribometer. An increase in nitrogen pressure during coating deposition results in phase transformation according to the relation Cr2N → Cr2N + CrN → CrN... was determined using the ball-on-disk device under the following conditions: counterbody of Al2O3 ball (a hardness of 15 GPa, a diameter of 10 mm and Ra of ~0.03 μm), load of 20 N, sliding speed about 0.2 m/s......
