Rare-earth, carbon and nitrogen co-permeating agent and its preparation

Abstract

The invention was involved in infiltrated agent of Ti-Al co-diffusion and its preparation. The infiltrated agent consist of 10-25% TiO2,2-25% Al powder, 30-80% Al2O3,0.3-2.8% infiltrated agent. Infiltrated agent was NH4Cl or other halide. The method of infiltrated agent of Ti-Al co-diffusion adopted solid powder embedded infiltration technology and the infiltration temperature adopted ladder temperature. Firstly, the substance was heated to 650-900deg.C for 1-5h. Secondly, it was heated to 900-1150deg.C for 2-8h. The infiltration layer of Ti-Al co-diffusion could be finished by the invention and the infiltration layer was smooth, bright and with high corrosion resistance.

Description

technical field [0001] The invention relates to a catalyst, more specifically, it relates to a rare earth, carbon and nitrogen three-component co-infiltration chemical infiltration agent, which is a catalyst used for rare earth, carbon and nitrogen three-component co-infiltration on the surface of steel parts by chemical heat treatment. activator. Background technique [0002] The carbonitriding process has been widely used in the production of wear-resistant and fatigue-resistant parts such as power machinery, chemical machinery, automobiles, tractor gears, shafts and bearings. However, due to the commonly used carbon and nitrogen co-infiltration, the process still has the disadvantages of long production cycle, large energy consumption, and unstable process effect. [0003] The application of rare earth to the metal material industry has attracted close attention at home and abroad. The addition of rare earths to steel can improve the variou...

AI Technical Summary

Problems solved by technology

Using the method of chemical heat treatment to infiltrate rare earth elements on the metal surface through the solid-air interface, there is no report on the information currently available.