TY - JOUR
T1 - Energetics of cubic Si3N4
AU - Zhang, Yahong
AU - Navrotsky, Alexandra
AU - Sekine, Toshimori
N1 - Funding Information:
Experiments at University of California—Davis were supported by the United States Department of Energy, Grant No. DEFG03-97ER45654.
PY - 2006/1
Y1 - 2006/1
N2 - High-temperature oxide melt drop solution calorimetry was used to study the energetics of formation of cubic silicon nitride prepared at high pressure. The standard enthalpy of formation of c-Si3N4 is -776.3 ± 9.5 kJ/mol. The calorimetric measurement of Si3N4 in 3Na2O·4MoO3 solvent was validated by comparing the enthalpy of formation for β-Si3N4 with previous work using alkali borate solvent. The enthalpy of transformation from β- to c-Si3N4 is 80.2 ± 9.6 kJ/mol. This value appears consistent with the observed synthesis conditions, which do not represent reversed equilibrium reactions.
AB - High-temperature oxide melt drop solution calorimetry was used to study the energetics of formation of cubic silicon nitride prepared at high pressure. The standard enthalpy of formation of c-Si3N4 is -776.3 ± 9.5 kJ/mol. The calorimetric measurement of Si3N4 in 3Na2O·4MoO3 solvent was validated by comparing the enthalpy of formation for β-Si3N4 with previous work using alkali borate solvent. The enthalpy of transformation from β- to c-Si3N4 is 80.2 ± 9.6 kJ/mol. This value appears consistent with the observed synthesis conditions, which do not represent reversed equilibrium reactions.
UR - http://www.scopus.com/inward/record.url?scp=33644537643&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33644537643&partnerID=8YFLogxK
U2 - 10.1557/jmr.2006.0033
DO - 10.1557/jmr.2006.0033
M3 - Article
AN - SCOPUS:33644537643
SN - 0884-2914
VL - 21
SP - 41
EP - 44
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 1
ER -