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Elucidation of Mechanism of Piston Pin Bushes Sulfidation Corrosion

Honda R&D Co., Ltd.-Ryuta Motani, Kazuki Maeyama, Kenta Yoshii, Shinji Oshida, Hiroki Masuda, Tomohiro Ikeda, Tatsuya Okayama, Shinichi Takahashi
  • Technical Paper
  • 2020-01-1079
To be published on 2020-04-14 by SAE International in United States
Today, downsizing is realizing lighter and more compact engines, but at the same time, the use of turbochargers and other supercharging devices in order to supplement power and torque is increasing their power density, resulting in higher thermal and mechanical loads. In such environment, corrosion of the copper alloy bushes (piston pin bushes) that are press-fitted into the small ends of the conrods is becoming an issue. It is known that automotive bearing materials such as bushes suffer sulfidation corrosion as a result of reacting with an extreme-pressure additive (Zn-DTP) in the lubricating oil, but the reaction paths remain unclear. The research discussed in this paper therefore tried to elucidate the reaction paths in the reaction between Zn-DTP and copper in actual vehicle environments. Unit corrosion tests were conducted in order to identify the effect of the state of degradation of the oil and its temperature and copper content on corrosion. The results of these tests suggested that the direct reaction between copper and Zn-DTP was not the main factor in the corrosion under study,…
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYIMIDE INSULATED, NORMAL WEIGHT, SILVER COATED, HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER, ALLOY, 200 °C, 600 VOLTS ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/89D
  • Current
Published 2019-12-18 by SAE International in United States
No Abstract Available.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYMIDE INSULATED, SMOOTH SURFACE, LIGHT WEIGHT, SILVER-COATED HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER ALLOY, 200 °C, 600 VOLTS ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/181A
  • Current
Published 2019-12-18 by SAE International in United States
No Abstract Available.
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Researchers Compare Shape-Memory Alloys

  • Magazine Article
  • TBMG-35633
Published 2019-12-01 by Tech Briefs Media Group in United States

Researchers have compared two copper-based SMAs of the same composition but fabricated differently. After annealing, the samples were cooled at different rates. Then both samples were heated inside the transmission electron microscope (TEM), so that scientists could observe the martensitic phase transition in real time.

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INDIVIDUAL SHIELD TERMINATION, CONNECTOR, ELECTRICAL (CATEGORY 9)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS85049/148
  • Current
Published 2019-11-15 by SAE International in United States
No Abstract Available.
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Installation Procedures and Torques for Fluid Connections

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS683E
  • Current
Published 2019-10-28 by SAE International in United States
These procedures cover the following: Section 3 - Cone end connections for flared tube and brazed ferrule, with and without gasket. Section 4 - Boss end connections, positioned type, with back-up ring. Section 5 - Boss end connections, positioned type, without back-up ring. Section 6 - Boss end connections, non-positioned type. Section 7 - Bulkhead connections.
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High Temperature Insulated Terminals & Splices

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS506A
  • Current
Published 2019-10-25 by SAE International in United States
This SAE Aerospace Standard (AS) describes the requirements for high temperature insulated crimp style terminal lugs and splices.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYIMIDE INSULATED, NORMAL WEIGHT, NICKEL COATED, HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER, ALLOY, 260 °C, 600 VOLTS ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/90C
  • Current
Published 2019-10-24 by SAE International in United States
No Abstract Available.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYMIDE INSULATED, SMOOTH SURFACE, LIGHT WEIGHT, NICKEL-COATED HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER ALLOY, 260 °C, 600 VOLTS ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/182A
  • Current
Published 2019-10-24 by SAE International in United States
No Abstract Available.
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WIRE, ELECTRIC, FLUOROPOLYMER-INSULATED, EXTRUDED ETFE, MEDIUM WEIGHT, SILVER-COATED HIGH STRENGTH COPPER ALLOY CONDUCTOR, 600-VOLT, 150 °C, ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/17A
  • Current
Published 2019-10-24 by SAE International in United States
No Abstract Available.
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Annotation ability available