charge proportion
1.After heat treatment at 400℃ or 500℃ for 1h,d_(33) values of BST ceramics onlychanged slightly. When the press stress reached 200 MPa and acted on the cera-mics at least 20 circles,the relationship between the released charge quantity Q andthe stress σ was still in direct proportion.
2.Conclusion: The effectiveness of montmorillonite for the treatment of CAG seemed positive proportion to the average layer charge density of montmorillonite.
