应用DTA技术分别测定了Mg与TiO2，Mg与B2O3及Mg与TiO2和B2O3之间的多相反应，分析了Mg，TiO2和B2O3三相可能存在的反应机制，应用Freeman-Carroll法和Kissinger法计算了反应的活化能和反应级数。结果表明Mg-B2O3-TiO2之间的反应为复杂的固-液-液反应，TiO2与Mg之间的固-液反应放出的强大热量诱发了B2O3和Mg之间的液-液反应，而Ti与B间的反应放出的热量反过来又促进前两者的反应。表观活化能在温度段760～858℃为E1=297kJ·mol-1，相应的反应级数分别为n1=0.8。采用Kissinger法计算的反应级数为0.9，与Freeman-Carroll法所得的n1=0.8基本一致。
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