Abstract
The first part of the paper describes the effect of the green density on the sintering rate of carbonyl nickel powder. These results show that the sintering rate decreases during the sintering according to a behavior more complex than usually assumed. In the second part, a new working hypothesis on the sintering mechanism is developed. The main idea is that the decreasing sintering rate is due to a simultaneous decrease both in the porosity of the compact and in the dislocation density near the pores, the latter being necessary for vacancy destruction.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Mäkipirtti, S. (Dissertation), “On the Sintering of W-Ni-Cu Heavy Metal,” Acta Polytech. Scand., Mech. Eng. Ser. 7: 1959.
Mäkipirtti, S., “On the Sintering of W-Ni-Cu Heavy Metal,” in: W. Leszynski (ed.), Powder Metallurgy (New York), 1961.
Metalworking News, Jan. 15, 1964.
Cf. Lenel, F. V., et al., “The Influence of Gravity in Sintering,” Trans. AIME227: 640–644 (1963).
Evans, P. E., and D. W. Ashell, “Grain Growth in Sintered Nickel Powder,” Intern. J. Powder Metallurgy 1: 36(1965).
De Hoff, R. T., et al, “The Role of Interparticle Contacts in Sintering,” in: W. Leszynski (ed.), Powder Metallurgy (New York), 1961.
Tikkanen, M. H., “The Part of Volume and Grain Boundary Diffusion in the Sintering of One-Phase Metallic Systems,” Planseeber. Pulvermet. 11: 70–81 (1963).
Tikkanen, M. H., and S. Mäkipirtti, “A New Phenomenological Sintering Equation,” Intern. J. Powder Metallurgy 1: 15–22 (1965).
Cf. van Bueren, H. G., and J. Hornstra, in: J. H. De Boer et al. (eds.), Grain Boundaries and the Sintering Mechanism in Reactivity of Solids (Amsterdam), 1961;
and F. V. Lenel, “Sintering of Metal Powders,” in: Fundamental Phenomena in Material Sciences, Vol. 1, Sintering and Plastic Deformation, Plenum Press (New York), 1964, pp. 3–10.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1966 Metal Powder Industries Federation and The Metallurgical Society of AIME
About this chapter
Cite this chapter
Tikkanen, M.H., Yläsaari, S. (1966). On the Mechanisms of Sintering. In: Hausner, H.H. (eds) Modern Developments in Powder Metallurgy. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7706-1_16
Download citation
DOI: https://doi.org/10.1007/978-1-4684-7706-1_16
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-7708-5
Online ISBN: 978-1-4684-7706-1
eBook Packages: Springer Book Archive