Non lube composite meterial formed from solid lubricants mixing with metal backing has obvious advantages. First, it not only has high melting point and mechanical strength but also excellent elongtation, heat conductivity and electroconductibily. Second, it is stable and resistant to moist and rub.Finally, it could be easily used in high temperature and high vacuum.All above depend on solid lubricants separated out from friction which could improve the rub character of metirial in different atmosphere,chemistry,electric and temperature enviroment.