▎ 摘　　要

NOVELTY - Preparing a space-resistant extremely low temperature graphene/chromium carbide lubricating coating comprises (i) taking 75-95 pts. wt. chromium carbide-based powder and 5-25 pts. wt. nickel-coated graphene powder, adding 20-30 pts. wt. graphene oxide powder into 70-80 pts. wt. deionized water, and dispersing for 5-8 hours to obtain a graphene oxide solution, dispersing 24-40 pts. wt. analytically pure nickel powder in 60-76 pts. wt. (0.5-1.5%) octadecyltrimethylammonium chloride solution, dispersing, stirring, centrifuging, taking, washing with distilled water and drying to obtain positively charged nickel powder, taking, adding it into above-mentioned graphene oxide solution, stirring, centrifuging and freeze-drying to obtain nickel-coated graphene powder; and (ii) mixing 60-95 pts. wt. chromium carbide, 10-45 pts. wt. nickel-chromium powder and 1-5 pts. wt. lanthanum oxide, sintering and cooling to obtain chromium carbide-based powder. USE - The method is useful for preparing space-resistant extremely low temperature graphene/chromium carbide lubricating coating. ADVANTAGE - The method prepares lubricating coating with a strong bonding force, high surface hardness, good wear resistance, and low friction coefficient which is particularly suitable for high vacuum and extremely low temperature environments.