The effect of cerium on ignition temperature of AZ91D magnesium alloy was studied. By the addition of cerium of 1%, the ignition temperature is raised by 180 ℃
The friction coefficients between the surfaces of a ball and a disc lubricated by a space lubricating oil No.4129 were measured at various operating conditions
The effects of Ni/Co ratios on A2B7-typeLao.7Mg0.3( Ni1-x Cox) 3.5 (0≤x≤0.5)alloys were in-vestigated. The results showed that the discharge ca-pacity of the