PS400 is a multi-component alloy developed by NASA and intended for high temperature bearing applications. This study reports on four mating surfaces, namely bulk 4130 steel, diamond-like carbon (DLC), polycrystalline diamond, molybdenum boride cobalt chrome coatings sliding against coating, the best performing tribopair at 25 500 °C was identified. The range speeds simulate extreme conditions ...

In order to study the tribological properties of different hydraulic oils under motion modes, four-ball tester and block-on-ring were used optimize test parameters evaluate performance commercial oils. The results showed that optimized methods form point line modes can better extreme pressure anti-wear oi. There was a negatively correlation between performance; this method provide basis for rea...

New lubricants based on vegetable oil were developed in this study. Different blends of canola mixed with fully synthetic two stock engine oils (0, 20%, 40%, 60%, and 80% oil). The viscosity the prepared was determined at different temperatures (20°C–80°C). Tribological experiments conducted to investigate effect newly wear characteristics mild steel material compared stainless when subjected a...

As engineering equipment is applied in a harsh environment with heavy load, cyclic stress, and wide range of temperatures, the reliability becomes challenge, especially when wear contact involved. Hence, design exploitation an advanced alloy surface may hold key to control minimize friction transmission system for safety-critical applications. High entropy alloys (HEAs) or multi-component have ...