TZP陶瓷中立方相氧化锆的X射线定量相分析

X-RAY QUANTITATIVE PHASE ANALYSIS OF CUBIC ZrO_2 IN TZP CERAMIC MATERIALS

采用X射线衍射方法研究了四方相氧化锆多晶 (TZP)陶瓷中的物相 ,提出了应用氧化锆双谱线峰强度比I( 2 0 0 ) /I( 0 0 2 ) 计算TZP陶瓷中少量立方相氧化锆 (c-ZrO2 )含量的X射线定量相分析方法 .此外 ,推导建立了TZP材料中c -ZrO2 和t -ZrO2 的X射线定量相分析的计算公式xc=Ic ,t ( 2 0 0 ) -KtIt( 0 0 2 )Ic ,t ( 2 0 0 ) +( f +fKt-Kt)It ( 0 0 2 )× 10 0 %xt=( 1+Kt) fIt( 0 0 2 )Ic ,t( 2 0 0 ) +( f+fKt-Kt)It( 0 0

A detailed analysis of the phases in tetragonal zirconia polycrystals (TZP) ceramics was carried out by XRD. A new method for calculating the cubic ZrO 2 content in TZP ceramic materials was proposed by calculating the intensities ratio of double diffraction peak I (200) / I (002) . The following expressions calculating the cubic ZrO 2 content in TZP are derived from the theories of X -ray quantitative phase analysis. x c= I c,t (200) - K t I t(002) I c,t (200) +( f+fK t - K t) I t (002) ×100% x t=(1+ K t ) fI t(002) I c,t(200) +( f+fK t - K t) I t(002) ×100%