摘要:
A sliding member 10 of the present embodiment includes: a lining layer 11 including a Bi phase 17; and a coating layer 12 containing Ni, the coating layer 12 being provided on a surface of the lining layer 11, the coating layer 12 partially forming an entrance portion 19 that has entered the lining layer 11 side at an interface 16 with respect to the lining layer 11. At any observation region 20 including the interface 16 between the lining layer 11 and the coating layer 12, a value R=S1/S2 of a ratio of a maximum area S1 of the Bi phase 17 included in the lining layer 11 to a maximum area S2 of the entrance portion 19 that has entered the lining layer 11 is 1.00≤R≤9.00.
摘要:
The invention relates to a piece comprising a friction surface (4) that rubs against a second surface, said piece comprising at least one structure (1) made from spheroidal graphite cast iron or steel, the external surface (4) of the piece including at least one layer (3) of lubricating thermoplastic polymers, characterised in that the piece comprises a nickel/aluminium-based intermediary layer (2) between the spheroidal graphite cast iron or steel structure (1) and the layer (3) of lubricating thermoplastic polymers.
摘要:
A bearing surface of an oilfield component is treated by applying a surface treatment having a low coefficient of friction to the bearing surface of the oilfield component by weld fusing or spraying an overlay of a Cu-Ni-Sn alloy material to the bearing surface. Weld fusing the overlay of the Cu-Ni-Sn alloy material to the bearing surface can involve laser surface cladding the overlay of the Cu-Ni-Sn alloy material to the bearing surface, gas tungsten arc welding the overlay of the Cu-Ni-Sn alloy material to the bearing surface, or plasma tungsten arc welding the overlay of the Cu-Ni-Sn alloy material to the bearing surface. The spray process can involve a twin-wire arc spray process or a high velocity oxy-fuel spray process.
摘要:
Es wird ein Schichtverbundwerkstoff beschrieben, der eine höhere spezifische Belastbarkeit und geringeren Verschleiß aufweist. Der Schichtverbundwerkstoff für Gleitlager weist eine Trägerschicht, eine Lagermetallschicht (1), eine erste Zwischenschicht aus Nickel (2), eine zweite Zwischenschicht (3) aus Zinn und Nickel sowie eine aus Kupfer und Zinn bestehende Gleitschicht (4) auf. Die Gleitschicht (4) besitzt eine Zinnmatrix (5), in die Zinn-Kupfer-Partikel (6) eingelagert sind, die aus 39 bis 55 Gew.-% Kupfer und Rest Zinn bestehen. Bei hohen Temperaturen, wie sie bei Gleitlagern in Verbrennungsmotoren auftreten, tritt eine Abwanderung des Zinns in die darunterliegende zweite Zwischenschicht (3) auf, wodurch eine Aufkonzentration der Zinn-Kupfer-Partikel (6) stattfindet.
摘要:
A bearing lining has a bearing backing layer provided with a coating comprising a first overlay layer and a second overlay layer, the first overlay layer being provided between the bearing backing layer and the second overlay layer. The first and second overlay layers each comprise a matrix material and a soft-phase material that is substantially insoluble in the matrix and dispersed within the matrix as soft-phase particles. The first overlay layer comprises a higher proportion by weight of a grain size reduction additive than the second overlay layer.
摘要:
A plain bearing consists of a bearing overlay 4 at a running surface 2 of the bearing, supported by a bearing substrate 6. An interlayer 8 is positioned between the bearing overlay 4 and the bearing substrate 6, and comprises hexagonal boron nitride. The interlayer 8 may be formed by electrolytic deposition from an electrolyte comprising particles of hexagonal boron nitride.