BORONISING PASTES AND BORONISING TREATMENT METHOD OF FERROUS AND FERROUS-ALLOY SURFACES

摘要

A boronizing agent for iron alloy consists of at least one of 5-60 wt.% B4C, 5-80 wt.% KBF4, 5-40 wt.% SiC and at least 50 wt.% B2O2, and one of accelerating agent and binding agent of at most 30 wt.%. The accelerating agent can be NaCl or Na2CO3 and the binding agent be at least one of alcohol, silicone binder and fluoro binder. A boronizing treatment method of iron and iron alloy surface is characterized by spreading paste of above composition on selected area of substance being boronizing treated and heat-treating it at temperature ranges of 600-1000 deg.C for 1- 10 hrs.