An acrylic acid/acrylate ester copolymer was employed as a dispersant for Y\|TZP aqueous suspensions. The adsorption of the copolymer on Y\|TZP powder was characterized by using the COD(chemical oxygen demand) method....An acrylic acid/acrylate ester copolymer was employed as a dispersant for Y\|TZP aqueous suspensions. The adsorption of the copolymer on Y\|TZP powder was characterized by using the COD(chemical oxygen demand) method. The addition of this dispersant caused a dramatic increase of the \%ζ\% potential in alkaline region and broadened the stable pH region. SEM and effective diameter analysis showed that the copolymer pronouncedly improved the stability of the suspension. The force\|distance curve was measured by using the colloidal probe AFM method. The stabilizing mechanism of the dispersant was also discussed.展开更多
通过 SiC 晶须与 Y-TZP 的复合,观察了 SiC 晶须的加入对 Y-TZP 基体相组成的影响。当 SiC 晶须长度缩短后,晶须在基体中分布的均匀性得到改善,复合材料的力学性能明显提高。Y-TZP 与 SiC 晶须复合后,室温性能降低,但材料的高温强度有...通过 SiC 晶须与 Y-TZP 的复合,观察了 SiC 晶须的加入对 Y-TZP 基体相组成的影响。当 SiC 晶须长度缩短后,晶须在基体中分布的均匀性得到改善,复合材料的力学性能明显提高。Y-TZP 与 SiC 晶须复合后,室温性能降低,但材料的高温强度有所改善,10 Vol%SiC 晶须/Y-TZP 复合材料在800℃时的强度为440MPa,材料的抗热震性也有明显改善。展开更多
文摘An acrylic acid/acrylate ester copolymer was employed as a dispersant for Y\|TZP aqueous suspensions. The adsorption of the copolymer on Y\|TZP powder was characterized by using the COD(chemical oxygen demand) method. The addition of this dispersant caused a dramatic increase of the \%ζ\% potential in alkaline region and broadened the stable pH region. SEM and effective diameter analysis showed that the copolymer pronouncedly improved the stability of the suspension. The force\|distance curve was measured by using the colloidal probe AFM method. The stabilizing mechanism of the dispersant was also discussed.
文摘通过 SiC 晶须与 Y-TZP 的复合,观察了 SiC 晶须的加入对 Y-TZP 基体相组成的影响。当 SiC 晶须长度缩短后,晶须在基体中分布的均匀性得到改善,复合材料的力学性能明显提高。Y-TZP 与 SiC 晶须复合后,室温性能降低,但材料的高温强度有所改善,10 Vol%SiC 晶须/Y-TZP 复合材料在800℃时的强度为440MPa,材料的抗热震性也有明显改善。
