Kinetics of Sintering at a Constant Rate of Heating

Sintering Kinetics at Isothermal Shrinkage: Effect of Specific Surface Area on the Initial Sintering Stage of Fine Zirconia Powder

“…The corrected equations of that can be applied to the L 0 change in the heating step are derived as follows: the differentiated equation 10 of is given by Putting the expansion error with δ L at the (c) step in Fig. 2, the corrections of the initial length ( L 0 (cor)) and the length change (Δ L (cor)) are given by , respectively.…”

“…The initial sintering on various ceramic powders has been investigated previously by many researchers, and several sinteringrate equations used for the kinetic analysis at the initial sintering stage have been reported. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Young and Cutler 1 have derived the sintering-rate equations that can analyze quantitatively densification at the initial sintering stage measured under constant rates of heating (CRH) and reported that, as the conclusion of the result analyzed using the derived equations, the initial sintering stage for yttria-stabilized zirconia is explained by a grainboundary diffusion (GBD) mechanism. Wang 4 have reported the stepwise isothermal dilatometry method that can determine the kinetic parameter in the sintering process of ceramics.…”

Mechanism of Alumina‐Enhanced Sintering of Fine Zirconia Powder: Influence of Alumina Concentration on the Initial Stage Sintering

“…The initial sintering of various ceramic powders has been investigated previously by many researchers, and several sintering‐rate equations have been reported and used for the kinetic analysis at the initial sintering stage 1–14 . Young and Cutler 1 derived the sintering‐rate equation that can quantitatively analyze densification at the initial sintering stage by constant rates of heating (CRH) measurement, and reported that the initial sintering stage of Y‐TZP powder was explained by a grain‐boundary diffusion (GBD) mechanism.…”

“…The initial sintering of various ceramic powders has been investigated previously by many researchers, and several sintering-rate equations have been reported and used for the kinetic analysis at the initial sintering stage. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Young and Cutler 1 derived the sintering-rate equation that can quantitatively analyze densification at the initial sintering stage by constant rates of heating (CRH) measurement, and reported that the initial sintering stage of Y-TZP powder was explained by a grainboundary diffusion (GBD) mechanism. Wang and Raj 2,3 also derived the sintering-rate equation applicable for the quantitative analysis of shrinkage data measured by the CRH technique, and estimated the activation energy at the intermediate sintering stage of ZrO 2 (with Y 2 O 3 ) and Al 2 O 3 /ZrO 2 (with Y 2 O 3 ) composites.…”

High-Temperature Oxidation and Its Kinetics Study of Ti–Al and Ti–V Alloys in Air

“…This method is similar to a determination method of activation energy in sintering by a constant heating rate. 22) The activation energies of Ti6%Al alloys and Ti4%V alloys are Q k (Ti6%Al) = 245 kJ/mol and Q k (Ti4%V) = 212 kJ/mol, respectively. The activation energies for diffusion of Al, V and O in Ti(¢) are Q 26,27) respectively.…”