Assessment of Processing Routes and Strength of a 3-Phase Molybdenum Boron Silicide (Mo5Si3-Mo5SiB2-Mo3Si)
1998; Elsevier BV; Volume: 38; Issue: 7 Linguagem: Inglês
10.1016/s1359-6462(97)00558-7
ISSN1872-8456
AutoresJ.H. Schneibel, C.T. Liu, L. Heatherly, M. J. Kramer,
Tópico(s)Advanced ceramic materials synthesis
ResumoHot corrosion behaviour of SPS-processed Mo-62Si-5B (at. %) alloy in pure Na2SO4 and mixture of Na2SO4 + NaCl melts at 900 °C was studied. The results show that the damage process of Mo-62Si-5B alloy is deteriorated in presence of Na2SO4 and Na2SO4 + NaCl. After hot corrosion at 900 °C for 100 h, the mass changes of the alloy in Na2SO4 and mixture of Na2SO4 + NaCl are −0.24 mg/cm2 and −0.50 mg/cm2, respectively. Oxides mainly contained SiO2 and amorphous borosilicate. Hot corrosion mechanisms of the alloy in presence of Na2SO4 and mixture of Na2SO4 + NaCl deposits are discussed.
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