ISSN:
1573-9066
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. Chromium carbide coatings of high quality have been obtained by using the principle of mixing the graphite powder to be coated with chromium particles with a supply of NH4Br, in a closed reaction volume. 2. Chemical transport of chromium to graphite powders are effected in a closed reaction volume from chromium particles, and a layer of carbides was grown on the powders by diffusion kinetics. The maximum depth of the chromium carbide coating at a process duration of 90 min was 27μ. The presence of hydrogen intensified the process. 3. Compared with impregnation in a stream of bromides, chromizing graphite powders in a closed reaction volume reduces chromium consumption and increases the yield of the apparatus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00776104
