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Kinetics of α- and β-Si3N4 formation from oxide-free high-purity Si powder (1991)

Varma, A. ; Pigeon, R. G. ; Miller, A. E.

Springer

Journal of materials science 26 (1991), S. 4541-4544

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ISSN: 1573-4803

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Abstract Available kinetic data for the nitridation of high-purity oxide-free Si powder are analysed. The analysis suggests that the α- and β-phases of Si3N4 are formed by separate and parallel reaction paths, and kinetic expressions for their formation are reported. The formation of the α-phase follows first-order kinetics, while the β-phase is formed by a phase-boundary-controlled rate law. These conclusions are consistent with other kinetic and micrographic analyses reported in the literature.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00543678

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