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公开(公告)号：KR1019930004555B1
公开(公告)日：1993-06-01
申请号：KR1019900008950
申请日：1990-06-18
Applicant: 한국과학기술원
IPC: C04B35/10
Abstract: The alumina based ceramic composite having high fracture toughness is composed of alumina and metallic niobium as major components. The matrices comprise alumina, alumina-zirconia, alumina-titanium carbide, alumina-silicon carbide whisker or alumina-zirconia-silicon carbide whisker etc., and niobium oxide is used as the source of dispersed particles. The ceramic composite is prepared by (a) homogeneously dispersing niobium particles in the matrix by mixing starting materials which are Al2O3, ZrO2, ZrAl2 and Nb2O5 etc., and (b) reaction sintering of the molded body in inert atmosphere at 1600-1750 deg.C for 30 mins.
Abstract translation: 具有高断裂韧性的氧化铝基陶瓷复合材料以氧化铝和金属铌为主要成分。 基质包括氧化铝，氧化铝 - 氧化锆，氧化铝 - 碳化钛，氧化铝 - 碳化硅晶须或氧化铝 - 氧化锆 - 碳化硅晶须等，并且使用铌氧化物作为分散颗粒的来源。 （a）通过（a）通过混合Al 2 O 3，ZrO 2，ZrAl 2和Nb 2 O 5等的原料将铌颗粒均匀地分散在基质中制备陶瓷复合材料，和（b）在1600-1750度的惰性气氛中反应烧结成型体 30分钟。
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