Lubricants having zinc borate by homogeneous precipitation and Span 60 in spindle oil

Nano particles of zinc borate were obtained by homogeneous precipitation method which is based on dissolving in ammonia and precipitating it as nano slow evaporation ammonia. The synthesized borates characterized advanced analytical techniques. Zinc used a lubricant additive to spindle oil having Span 60 dispersant. well dispersed shown optical microscopy the oils. Four ball tests lubricants indicated lowered (61.8%) wear scar diameter significantly. hardness surfaces test balls was reduced from 688 HV 618 presence embedded surface flexible skin formed. Therefore pressure decreased due increase contact area balls. roughness also 35.63 nm 27.60 addition 60. prepared technique that rub each other.