中文摘要：

在热力学分析的基础上以富硼渣和炭黑为主要原料合成了BN—MgAlON复合材料，并利用X射线衍射（XRD）、能谱分析（EDS）、扫描电镜（SEM）和DSC—TG等测定了产物的相组成、显微结构和氧化性能。实验结果表明，在实验条件下，富硼渣中的B203生成BN、MgO、A1203反应生成MgAlON相。BN—MgAlON复合粉体的主要成分为MgAlON、Sialon、BN。以制备的复合粉体为原料，Y2O3为添加剂，烧结制备出了BN—MgAlON复合材料，主要物相为Mg—A10N、Sialon和BN，有少量A15Y3012和CaYAl307相生成。复合材料氧化温度988℃左右，继续升高温度，试样开始增重，增重速率增大，随着温度的升高，温度高于1320℃时，最大增重率为5．54％。

英文摘要：

Based on thermodynamic analysis, BN-MgA1ON composite materials were synthesized by using bo- ron-rich slag and carbon black as main raw materials. Phase composition, microstructure and oxidation proper- ties of products were determined by X-ray diffraction（XRD）, energy spectral analysis, scanning electron mi- croscopy and differential scanning calorimetry（DSC）. The experimental result showed that B203 was trans- formed into BN, A12 03 and SiOe which could react with nitrogen to form MgA1ON phase. BN-MgAION com- posite powders were mainly consisted of MgA1ON, SiMon and BN. BN-MgA1ON composite materials were sin- tered with adding Ye Oa to the composite powders. The main phases of the material were MgA1ON, Sialon, BN and a few of AlsY30,2 and CaYA1307. The oxidation temperature of the materials is around 988℃, and the weight of the samples began to increase rapidly as the temperature keeps rising. The samples can get the maxin- mum weight rate of 5.54% when the temperature is higher than 1320℃.