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...