Journal ArticleDOI
The kinetics and mechanism of multi-component diffusion on AISI 1045 steel
Fan-Shiong Chen,Kuo-Liang Wang +1 more
TLDR
A multi-component diffusion study of boron, chromium, aluminum and silicon on an AISI 1045 steel substrate has been carried out by pack cementation as mentioned in this paper.Abstract:
A multi-component diffusion study of boron, chromium, aluminum and silicon on an AISI 1045 steel substrate has been carried out by pack cementation A commercial boriding powder (Ekabor-3) and an Fe–Cr alloy powder plus NH 4 Cl activator make up 30 wt% of the pack, and 70 wt% of Al 2 O 3 serves as an inert diluent and supply source of aluminum atoms The structure and constituent changes of the coated layers and their thickness and hardness, as influenced by different pack compositions, have been investigated at 1000°C The kinetics of the reaction, K = K 0 exp(− Q / RT ), have also been determined in this work by varying the NH 4 Cl additions The results show that Q and K 0 decrease with increasing amount of NH 4 Cl addition at temperatures between 900°C and 1000°Cread more
Citations
More filters
Journal ArticleDOI
FeB/Fe2B phase transformation during SPS pack-boriding: Boride layer growth kinetics
TL;DR: In this article, the diffusion coefficient of boron in FeB and Fe 2 B phases is obtained through fitting the experimental results into the model, and the simulation results are found to be in good agreement with experimental results.
Journal ArticleDOI
Boriding kinetics of H13 steel
TL;DR: In this article, case properties and kinetics of borided AISI H13 steel have been investigated by conducting a series of experiments in Ekabor-I powders at the process temperature of 1073, 1173 and 1273 K for periods of 1-5h.
Journal ArticleDOI
An approach to kinetic study of borided steels
Şaduman Şen,Ugur Sen,Cuma Bindal +2 more
TL;DR: In this article, the extent of penetration of FeB and Fe2B sublayers was measured as a function of boronizing time and temperature in the range of 1123-1273 K. The results showed that K increase with boriding temperature.
Journal ArticleDOI
Kinetics of boriding of AISI W1 steel
TL;DR: In this article, the case properties of borided AISI W1 steel have been investigated by conducting a series of experiments in Ekabor-I powders at the process temperature of 1123-1323 K at 50 K intervals for periods of 1-8 h.
Journal ArticleDOI
Evaluation of vanadium carbide coatings on AISI H13 obtained by thermo-reactive deposition/diffusion technique
TL;DR: In this article, vanadium carbide coatings on AISI H13 steel were prepared by thermo-reactive deposition/diffusion process (TRD) in molten salt bath for 1 to 6h at 920°C and 1000°C, respectively.
References
More filters
Book
Thermochemical properties of inorganic substances
Ihsan Barin,Ottmar Knacke +1 more
TL;DR: In this paper, a volume of tables conveying the thermochemical parameters of more than 2000 substances, cover enthalpy, entropy, chemical potential and Planck's function, and commentaries on the chemical reactions of the relevant component and indications of stability/metastability.
Journal ArticleDOI
Boriding of Fe and Fe–C, Fe–Cr, and Fe–Ni alloys; Boride-layer growth kinetics
TL;DR: In this article, a boron-compound layer was developed consisting of a surface-adjacent "FeB" sublayer on top of an "Fe2B", and the extent of penetration of the two sublayers as a function of boriding time and temperature in the range 1025-1275 K.
Journal ArticleDOI
Engineering the Surface with Boron Based Materials
Peter A. Dearnley,T. Bell +1 more
TL;DR: The only commercial coating processes practised have been the thermochemical diffusion techniques termed boronizing or boriding, whereby borone is diffused into, and combines with, the substrate material forming a single or double phase metal boride layer at, and adjacent to, the surface.
Journal ArticleDOI
Formation and properties of multicomponent and composite borided layers on steel
TL;DR: In this paper, the structure and properties of composite and multicomponent borided layers consisting of Ni4B3, (Fe,Ni)B, and (Fe and Ni)2B borides are presented.
Journal ArticleDOI
Thermal reactive deposition coating of chromium carbide on die steel in a fluidized bed furnace
TL;DR: In this paper, the authors investigated the influence of the amount of addition on the formation rate of the chromium carbide layers by three different alloy powders, namely, pure chromium, 71Cr-29Fe-0.03C, and 66Cr-26Fe7.7C containing carbide-forming elements.