Kinetics of Formation, Metallurgical and Tribological Properties of Iron Boride Surface Layer on Steel ASTM A572

被引：0

作者：

Keddam, M. ^{[1
]}

Ortiz-Dominguez, M. ^{[2
]}

Cruz-Aviles, A. ^{[2
]}

Morgado-Gonzalez, I. ^{[3
]}

Gomez-Vargas, O. A. ^{[4
]}

Cardoso-Legorreta, E. ^{[3
]}

Zuno-Silva, J. ^{[2
]}

机构：

[1] USTHB, Fac Mech Engn & Proc Engn, Lab Mat Technol, Algiers, Algeria

[2] Autonomous Univ Hidalgo State, Escuela Super Ciudad Sahagun Mech Engn, Sahagun, Hidalgo, Mexico

[3] Autonomous Univ Hidalgo State, Mat & Met Res Ctr, Pachuca, Hidalgo, Mexico

[4] Inst Tecnol Tlalnepantla ITTLA, Tlalnepantla De Baz, Estado De Mexic, Mexico

来源：

METAL SCIENCE AND HEAT TREATMENT | 2023年 / 65卷 / 1-2期

关键词：

boronizing; kinetics; determination of mean diffusivity (MDC); incubation period; boron activation energy; GROWTH; FE;

D O I：

10.1007/s11041-023-00894-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The structure, cohesion and tribological properties of steel ASTM A572 (the Russian counterpart is St6sp) are studied after pack boronizing in a powder mixture at 1123 - 1173 K for 2 - 8 h. The microstructure of the boride layers is studied with the use of optical and scanning electron microscopes. The cohesion of the diboride layers to the substrate from steel ASTM A572 is assessed. The friction coefficient and the wear resistance of the steel are determined by testing by the pin-on-disk scheme. The boronized surface layers are shown to consist of iron borides and to have a tooth morphology and a thickness of 37.40 & PLUSMN; 6.5 - 238 & PLUSMN; 36.4 & mu;m. The kinetics of the boronizing process is studied by an approach based on determination of the mean diffusivity of boron in Fe2B using the activation energy for a constant incubation period. The results of the calculation are checked experimentally for two additional boronizing conditions at 1123 and 1273 K for 10 h.

引用

页码：74 / 81

页数：8

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