Properties of porous tungsten-copper and molybdenum-copper pseudoalloys
- 39 Downloads
We obtained a complex of properties (hydraulic resistance, thermal conductivity, heat transfer coefficient) of the pseudoalloys W-Cu and Mo-Cu in the range of porosity 0.49–0.84 for different ratios of the high melting metal and copper. It was experimentally confirmed for the first time that the dependence of the heat transfer coefficient on porosity is extremal. It was shown that Koh's dependence for the calculation of the thermal conductivity of porous powdered metals can also be used for pseudoalloys with the same empirical coeifficient.
KeywordsCopper Porosity Heat Transfer Thermal Conductivity Transfer Coefficient
Unable to display preview. Download preview PDF.
- 1.V. V. Skorokhod, S. M. Solonin, L. I. Chernyshev, and G. S. Khurtsidze, “Permeable tungsten-copper materials,” Poroshk. Metall., No. 4, 35–38 (1976).Google Scholar
- 2.S. M. Solonin and I. N. Balitskii, “Chromizing of porous materials on the basis of tungsten and tungsten-copper pseudoalloy,” Poroshk., Metall., No. 8, 32–36 (1979).Google Scholar
- 3.Yu. V. Il'in, “Gas flow through porous metallic walls,” Izv. Vyssh. Uchebn. Zaved., Ser. Aviatsion. Tekh, No. 1, 65–73 (1959).Google Scholar
- 4.N. M. Karavaev and V. P. Maikov, “Method of determining the heat transfer coefficients in a layer of granular material,” Izv. Akad. Nauk SSSR, Otd,. Tekh. Nauk, No. 3, 89–100 (1956).Google Scholar
- 5.I. C. Y. Koh and A. Fortini, “Prediction of thermal conductivity and electrical resistivity of porous metallic materials,” Int. J. Heat Mass Transfer,16, 2013–2022 (1973).Google Scholar
- 6.K. L. Anderson, “Local changes induced by radiant heating of the temperature of a wall cooled through a porous surface,” Teploperedacha,90, No. 3, 964–966 (1968).Google Scholar