Eutectic composite powdery-sintering assistant for manufacturing structural ceramic and production thereof

A technology of sintering aids and composite powders, which is applied in the field of ceramic production technology in the Ming Dynasty, to achieve excellent technical performance, lower sintering pressure, and lower sintering temperature
CN1680215AInactive Publication Date: 2005-10-12李根法
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
李根法
Publication Date
2005-10-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

An eutectic composite ceramic powder sintering assistant for manufacturing structural ceramic and its production are disclosed. It is carried out by preparing eutectic composite ceramic of TMB2 / SiC, TMB2 / SiC / B4C, C / TMB2 / SiC, TMB2 / TMC / SiC, TMB2 / SiC / MeB6, SiC / MeB6 / B4C, TiB2 / SiC / MeB6, C / TMB2 / SiC / B4C, TiB2 / SiC / MeB6 / B4C, and TMB2 / SiC / MeB6 / B4C by high-temperature melting solidifying method, crushing and grinding. It achieves lower sintering temperature and sintering pressure, higher density, strength and hardness of ceramic.
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Description

Technical field

[0001] The invention relates to ceramic production technology, in particular to a eutectic composite ceramic powder sintering aid and a preparation method thereof, such as TMB 2 / MeB 6 , TMB 2 / MeB 6 / B 4 C, VB 2 / SiC / B 4 C, C / VB 2 / SiC / B 4 C, VB 2 / SiC / VC, VB 2 / SiC / LaB 6 Or VB 2 / SiC / B 4 , C / LaB 6 Eutectic composite ceramic powder, this kind of sintering aid is used for B 4 Sintering of structural ceramics such as C or SiC. Background technique

[0002] B 4 C and SiC have many excellent characteristics. As described in Thevenot, F.J.Eur.Ceram.Soc.1990,6,205, B 4 C has extremely high hardness and strength, low density, can block bullet shooting. Hot-pressed sintered B 4 C ceramic has been used to prepare body armor, lightweight armor plates and tools for helicopters and tanks, as described by Mingwei Chen, Iames W. McCauley, Kevin J. Hemker, SCIENCE, 2003, 299, 1563. SiC has the characteristics of high strength, high hardness, wear resistance, corrosion resistanc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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