Special features of vacuum carburizing of heat-resistant steel in acetylene

被引：0

作者：

Ryzhov, N.M. ^{[1
]}

Smirnov, A.E. ^{[1
]}

Fakhurtdinov, R.S. ^{[1
]}

Mulyakaev, L.M. ^{[1
]}

Gromov, V.I. ^{[1
]}

机构：

[1] N.E. Bauman Moscow St. Techn. Univ., Moscow, Russia

来源：

Metallovedenie i Termicheskaya Obrabotka Metallov | 2004年 / 06期

关键词：

Acetylene - Carburizing - Diffusion coatings - Dissociation - Process control - Reaction kinetics - Vacuum;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The mechanism of formation of the diffusion layer due to vacuum carburizing of complexly alloyed steel 16Kh3NVFMB-Sh (VKS5) in a medium of acetylene is considered. It is shown that the process of carburizing occurs in a self-regulation mode without the danger of carbon black due to the high rate of arrival of carbon from the gas medium as a result of catalytic dissociation of acetylene molecules, intense process of carbide formation on the saturated surface, and absence of catalytic activity of carbides. The diffusion layer forms under a thin layer of the carbide phase in a kinetic regime, the intensity of which is determined by the rate of dissolution of carbides.

引用

页码：10 / 15