摘要
用反应烧结和气氛烧结技术制备Ａｌ＿２Ｏ＿３－ＡｌＮ－ＴｉＣ复合陶瓷，用ＸＲＤ，ＳＥＭ等测试手段进行了微观结构的研究，结果表明，用该技术制备的复相陶瓷含有纳米级的ＡｌＮ晶粒，从而使得在较低的烧结温度下可以制得比较致密的Ａｌ＿２Ｏ＿３－ＡｌＮ－ＴｉＣ复合陶瓷。
Al_2O_3-AlN-TiC composite ceramics is prepared firstly from Al_2O_3-Al-TiC mixtures. Cold-isostatic-pressed compacts are reactionbonded in N_2up to 1200℃ and then sintered without pressure in Ar at1600℃for lh.Samples are examined by means of XRD,EPMA and SEM,After the reaction-bonding,thereexist only Al_2O_3,AlN and TiC phases,and in the distribution of N,content of N is higher on the surface of samples and lower in the center of samples,due to the diffusion of N. After sintering without pressure,TiC particlesas well as Al_2O_3 are well distributed,and there are a lot of AlN nanoparticles lying between the above particles.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1995年第4期430-433,共4页
Journal of The Chinese Ceramic Society
基金
武汉工业大学科学基金
关键词
氧化铝
氮化铝
碳化钛
复合陶瓷
微观结构
制备
alumina,aluminum nitride,titanium carbide,reaction-bonding,nanoparticle,composite ceramics
