Method for adding carbon nano tube into metal bath

Abstract

The invention relates to a method for adding carbon nano tube into metal bath, which is characterized in mixing carbon nano tube, metal powder and stearic acid according to a weight ratio between the carbon nano tube and metal powder of 1:10-2, and a weight ratio between stearic acid, carbon nano tube and metal powder of 1:15-20, putting into a ball mill for ball milling, sieving with a 50-80 mesh stainless steel sieve to obtain a uniform mixture, adding the mixture into the mold, pressing for molding to obtain carbon nano tube / metal composite press block; adding the carbon nano tube / metal composite press block into a metallic or alloy solution, regulating temperature of fused mass to a casting temperature, casting the article.

Description

technical field

[0001] The invention belongs to the fields of preparing metal composite materials and metal smelting processing, and in particular relates to the technical field of processing technology for preparing metal matrix composite materials or refining metal crystal grain size by adding carbon nanotubes to metal melts. Background technique

[0002] At present, the preparation techniques and methods of carbon nanotube reinforced metal matrix composites are mainly stirred casting method and powder metallurgy method. The powder metallurgy method is to mechanically mix carbon nanotubes with fine and pure metal powder, press them in a mold, and then heat them for sintering, so that the reinforcing phase and the metal matrix are aggregated into one, and the metal / carbon nanotube composite material is made. . The advantage of the powder metallurgy method is that the metal matrix does not have to go through the high-temperature state of complete melting during the preparat...