Abstract
The behaviour of several types of silicon nitride-based materials in contact with molten copper has been evaluated. Tests were performed at a temperature of 1400 K for a holding time of 260 h in fluido-dynamic conditions.
The extent of corrosion has been evaluated in terms of linear loss, weight loss, morphology and chemical composition of the surfaces remaining in contact with the molten phase, by means of SEM, EPMA and X-ray diffraction. Corrosion resistance has been found to be a function of the chemical composition, type and amount of the secondary phases. Materials produced with MgO as a sintering aid showed poor resistance whereas those with Al2O3 exhibited the best performance. In any case the extent of corrosion was very slight and the results revealed that all the tested ceramics may be considered suitable for use in contact with molten copper.
Similar content being viewed by others
References
E. H. Andrews,J. Mater. Sci. 1 (1966) 377.
C. A. Calow andR. B. Barclay,ibid. 2 (1967) 404.
E. H. Andrews, W. Bonfield, C. K. Davies andA. J. Markham,ibid. 7 (1972) 1003.
R. L. Mehan andD. W. McKee,ibid. 11 (1976) 1009.
M. J. Bennet andM. R. Houlton,ibid. 14 (1979) 184.
T. W. Lindop,Chem. Eng. 12 (1970) 427.
G. W. Samsonov andI. M. Vinitskii, “Handbook of Refractory Compounds” (IFI/Plenurn, New York, 1980) p. 411.
K. H. Jack,J. Mater. Sci. 11 (1976) 1135.
L. A. Lay, “Corrosion Resistance of Technical Ceramics” (National Physical Laboratory, Teddington, 1983).
R. Sangiorgi, M. L. Muolo andA. Bellosi,Mater. Sci. Eng. A103 (1988) 277.
C. N. Babini, A. Bellosi andP. Vincenzini,Ceramurgia 14 (1984) 51.
A. Bellosi, P. Vincenzini andG. N. Babini,Maler. Chem. Phys. 18 (1987) 205.
A. Bellosi, P. Vincenzini andG. N. Babini,J. Mater. Sci. 23 (1988) 2348.
G. N. Babini, A. Bellosi andP. Vincenzini,ibid. 17 (1982) 231.
G. N. Babini, A. Bellosi andC. Galassi,ibid. 22 (1987) 1687.
R. Sangiorgi, M. L. Muolo andR. Minisini,High Temp. Mater. Proc. 1988, in press.
T. B. Massalski (ed), “Binary Alloy Phase Diagrams”, (A.S.M., Ohio, 1986).
G. N. Babini, A. Bellosi, R. Chiara andM. Bruno,Adv. Ceram. Mater. 2 (1987) 146.
I. Barin andO. Knacke, “Thermochemical Properties of Inorganic Substances” (Springer, Berlin, 1973).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sangiorgi, R., Bellosi, A., Muolo, M.L. et al. Corrosion of hot pressed silicon nitride-based materials by molten copper. J Mater Sci 24, 4080–4087 (1989). https://doi.org/10.1007/BF01168978
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01168978