Sintering of Cu–Sn–P–MoS2 Powder Samples at 780°C

The influence of initial porosity and MoS 2 content of pressed Cu + 9Sn + 1.5P + (5, 10, 15%) MoS 2 powder samples on their growth during sintering in hydrogen at 780°C is studied. The growth of samples with the same MoS 2 content decreases with higher initial porosity and the growth of samples of t...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics 2014, Vol.52 (11-12), p.651-655
Main Authors: Kostornov, A. G., Fushchich, O. I., Chevychelova, T. M., Kostenko, O. D.
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Glass
Materials Science
Metallic Materials
Natural Materials
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Summary:The influence of initial porosity and MoS 2 content of pressed Cu + 9Sn + 1.5P + (5, 10, 15%) MoS 2 powder samples on their growth during sintering in hydrogen at 780°C is studied. The growth of samples with the same MoS 2 content decreases with higher initial porosity and the growth of samples of the same size and same porosity after pressing increases with greater MoS 2 content. Water vapors generated during the hydrogen reduction of oxides present on the starting tin powder and phosphorous-copper alloy powder cause swelling of the samples. Moreover, phase transformations in the material during sintering can increase the samples as new phases are formed (copper sulfide Cu 2 S) with a larger crystal lattice that that of the matrix and molybdenum disulfide.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-014-9572-8