Chemicothermal treatment in current-conducting powdered mixtures
- 15 Downloads
Chemicothermal treatment with use of CCPM is a simple process. The electric current is not only the source for heating the mixture but also accelerates diffusion processes due to microarcs that induce dissociation and ionization of the active substance in the mixture. These substances may be part of the CCPM itself or part of a paste applied directly to the part.
Carburizing at 930° for 2 h produces a case depth of 1.2 mm and carbonitriding at 850° a case depth of 0.7 mm. Boriding at 1000° for 4 h produces a diffusion coating ∼250 μ thick with hardness H50 1700, while at 950° for 1.5 h it produces a coating 85 μ thick with hardness H50 1650.
KeywordsDiffusion Process Electric Current Active Substance Powdered Mixture Simple Process
Unable to display preview. Download preview PDF.
- 1.G. N. Dubinin, Diffusion Chromizing of Alloys [in Russian], Mashinostroenie, Moscow (1964).Google Scholar
- 2.V. S. Veselovskii, Carbon and Graphite Structural Materials [in Russian], Nauka, Moscow (1965).Google Scholar
- 3.N. P. Bogoroditskii, V. V. Pasynkov, and B. M. Tareev, Electrotechnical Materials [in Russian], No. 5, Energiya, Leningrad (1969).Google Scholar
- 4.V. P. Glukhov, Boride Coatings on Iron and Steels [in Russian], Naukova Dumka, Kiev (1970).Google Scholar