摘要
已经研制出新的ＳＨＳ／ＱＰ材料制备系统。本文中研究了高压延迟、高压延时、高压压力等工艺参数对ＴｉＣ－ｘＮｉ金属陶瓷密实度和结构的影响。讨论了ＳＨＳ／ＱＰ过程中材料结构形成的机理。通过优化工艺参数和材料组成，制备出了良好性能的金属陶瓷。为金属陶瓷的制备提供了一条新的途径。
A new SHS/QP instrument for the fabrication of composites has already been established. In the process, following the SHS reaction, when the sample is still in a red hot and soft state, a quick and high hydraulic force is applied on the sample, so that dense product can be obtained. Highest density is obtained, when pressing is applied to the sample immediately after the completion of the SHS reaction. Pressing applied before completion of the SHS reaction does not yield a dense product. There is a limitation on how much the relative density can be increased by increasing the pressing duration. Near theoretical density of TiC 25wt% Ni cermets was obtained with a high pressure>110 MPa. A structure formation mechanism for the TiC x Ni cermets made by SHS/QP was proposed. Dense cermets with good properties were made by optimizing the relevant parameters.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1997年第2期61-65,共5页
Acta Materiae Compositae Sinica
基金
国防科技预研基金
