Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-sintering-activity (Zr, Ti) C-SiC multiphase ceramic powder
The invention provides a preparation method of high-sintering-activity (Zr, Ti) C-SiC multiphase ceramic powder. The preparation method comprises the following steps: (1) preparing a multiphase ceramic precursor; (2) adding magnesium salt and gelatinizing the precursor; and (3) preparing the multiphase ceramic powder through high-temperature carbon thermal reduction. Tetraethyl titanate is used as a titanium source, furfuryl alcohol is used as a carbon source, and magnesium salt is used as a modifier. And the added magnesium salt can coat the ceramic powder in the form of amorphous Mg-Si-O oxide, so that the sintering property of the ceramic powder is improved. The multiphase ceramic powder prepared by the method is low in production cost, and the sintering activity of the multiphase ceramic powder is far higher than that of commercially applied multiphase ceramic powder at present; the composite ceramic block with the relative density up to 99.9% can be obtained through spark plasma sintering at 1700 DEG C and 30 MPa for 10 min, and the composite ceramic block has good application prospects in the field of high-temperature-resistant and ablation-resistant environments.
本发明提供了一种高烧结活性(Zr,Ti)C‑SiC复相陶瓷粉的制备方法，包括以下步骤：(1)制备复相陶瓷前驱体(2)加入镁盐并使前驱体凝胶化(3)高温碳热还原制备复相陶瓷粉。本发明钛酸四乙酯作钛源，糠醇作碳源，镁盐为改性剂。添加镁盐能以无定形Mg‑Si‑O氧化物形式包覆陶瓷粉末，提高陶瓷粉末烧结性。本发明制备的复相陶瓷粉生产成本较低且其烧结活性远高于目前商业化应用的复相陶瓷粉；经1700℃、30MPa放电等离子烧结10min能获得相对致密度高达99.9％的复相陶瓷块体，在耐高温、耐烧蚀环境领域具有很好的应用前景。
Preparation method of high-sintering-activity (Zr, Ti) C-SiC multiphase ceramic powder
The invention provides a preparation method of high-sintering-activity (Zr, Ti) C-SiC multiphase ceramic powder. The preparation method comprises the following steps: (1) preparing a multiphase ceramic precursor; (2) adding magnesium salt and gelatinizing the precursor; and (3) preparing the multiphase ceramic powder through high-temperature carbon thermal reduction. Tetraethyl titanate is used as a titanium source, furfuryl alcohol is used as a carbon source, and magnesium salt is used as a modifier. And the added magnesium salt can coat the ceramic powder in the form of amorphous Mg-Si-O oxide, so that the sintering property of the ceramic powder is improved. The multiphase ceramic powder prepared by the method is low in production cost, and the sintering activity of the multiphase ceramic powder is far higher than that of commercially applied multiphase ceramic powder at present; the composite ceramic block with the relative density up to 99.9% can be obtained through spark plasma sintering at 1700 DEG C and 30 MPa for 10 min, and the composite ceramic block has good application prospects in the field of high-temperature-resistant and ablation-resistant environments.
本发明提供了一种高烧结活性(Zr,Ti)C‑SiC复相陶瓷粉的制备方法，包括以下步骤：(1)制备复相陶瓷前驱体(2)加入镁盐并使前驱体凝胶化(3)高温碳热还原制备复相陶瓷粉。本发明钛酸四乙酯作钛源，糠醇作碳源，镁盐为改性剂。添加镁盐能以无定形Mg‑Si‑O氧化物形式包覆陶瓷粉末，提高陶瓷粉末烧结性。本发明制备的复相陶瓷粉生产成本较低且其烧结活性远高于目前商业化应用的复相陶瓷粉；经1700℃、30MPa放电等离子烧结10min能获得相对致密度高达99.9％的复相陶瓷块体，在耐高温、耐烧蚀环境领域具有很好的应用前景。
Preparation method of high-sintering-activity (Zr, Ti) C-SiC multiphase ceramic powder
一种高烧结活性(Zr,Ti)C-SiC复相陶瓷粉的制备方法
ZHANG MINGYU (Autor:in) / ZHENG LEI (Autor:in) / FANG CUNQIAN (Autor:in) / HUANG QIZHONG (Autor:in)
05.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
ALUMINA CERAMIC POWDER WITH HIGH SINTERING ACTIVITY AND PREPARATION METHOD THEREFOR
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