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放电等离子烧结ＴｉＢ２过程中真空室气压Ｐａ有二个峰值，本文对Ｐａ第二峰进行了研究．研究结果表明：Ｐａ第二峰是烧结过程中化学反应导致的气相沉积所致．原始粉末和烧结工艺对Ｐａ第二峰有影响，而Ｐａ第二峰也影响烧结材料的微观结构．
There are two peaks in the pressure Pa of the vacuum chamber during the discharge plasma sintering of TiB2. In this paper, the second peak of Pa was studied. The results show that the second peak of Pa is caused by the vapor deposition caused by the chemical reaction in the sintering process. The primary powder and the sintering process have an influence on the second peak of Pa, while the second peak of Pa also affects the microstructure of the sintered material.