东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (2): 221-224+237.DOI: -

• 论著 • 上一篇    下一篇

配料组成对富硼渣合成(Ca;Mg)α′-Sialon/BN陶瓷粉体的影响

巫俊斌;姜涛;薛向欣;李江;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-02-15 发布日期:2013-06-22
  • 通讯作者: Wu, J.-B.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2006AA06Z368);;

Effect of initial composition on (Ca, Mg)α′-sialon/BN powder synthesized from boron-rich slag

Wu, Jun-Bin (1); Jiang, Tao (1); Xue, Xiang-Xin (1); Li, Jiang (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-02-15 Published:2013-06-22
  • Contact: Wu, J.-B.
  • About author:-
  • Supported by:
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摘要： 以富硼渣为主要原料,采用碳热还原氮化法合成了组分为(Ca,Mg)xSi12-3xAl3xOxN16-x(x=0.3,0.6,1.0,1.4和1.8)的(Ca,Mg) α′-Sialon/BN陶瓷粉体.利用XRD,SEM和EDX检测手段研究了x值对合成产物相组成和显微形貌的影响.结果表明:α′-Sialon含量随着x值的增大逐渐增加,当x=1.4时,α′-Sialon含量达到最大值.继续增大x值,产物中α′-Sialon减少,而Al N增多,并出现一定量的15R(Si Al4O2N4).当x≥1.4时,α′-Sialon晶粒为长柱状.

关键词: 富硼渣, 碳热还原氮化法, (Ca, Mg)α′-Sialon, BN, 显微形貌

Abstract: The (Ca, Mg) α′-Sialon/BN composite powder was synthesized by carbothermal reduction nitridation with boron-rich slag as main starting material, of which the composition is (Ca, Mg)xSi12-3xAl3x OxN16-x where x is ranging from 0.3 to 1.8. The effect of different x values on the phase composition and microstructure of synthesized products were investigated by XRD (X-ray diffraction), SEM (scanning electron microscope) and EDX (energy dispersive X-ray). The results showed that the content of α′-Sialon increases with increasing value of x and comes up to the maximum when x=1.4 but decreases when x value exceeding 1.4 with increasing AlN and a certain amount of 15R(SiAl4O2N4) found. The α′-Sialon grains presents long columnar grains when x≥1.4.

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