The Surface Energy of Iron-3% Silicon by Surface-Relaxation Measurements
1967; Taylor & Francis; Volume: 1; Issue: 1 Linguagem: Inglês
10.1179/msc.1967.1.1.9
ISSN0026-0681
AutoresB. Mills, H. Jones, G. M. Leak,
Tópico(s)nanoparticles nucleation surface interactions
ResumoThe surface energy of iron-3% silicon alloy has been determined as 1940 ± 600 erg. cm−2 for the range 1075–1325° C by measuring the decay kinetics of multiple scratches on single crystals near (110) orientation during vacuum annealing. Mass transport occurred mainly by volume diffusion in the alloy. Surface-energy values from single scratches were higher by ∼ 20% than those from multiple scratches, probably because of inadequacies in the single-scratch analysis. Facets formed where the smoothed scratch profile contained the (110) plane at the highest temperature (1300° C) only and for the crystal nearest to (110) orientation. It was noted that extended striations formed on a single crystal near (100) orientation on annealing at 1200° C, in the direction for which a small surface tilt would expose the (100) plane. These observations suggest that the γ-plot has a deeper cusp at (100) than at (110) under the annealing conditions prevailing.
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