阅读说明：本技术 一种高产率陶瓷及其制备方法和应用 (A kind of high yield ceramics and its preparation method and application ) 是由 詹创添 吴利翔 牛文彬 朱林林 郭伟明 林华泰 于 2019-08-05 设计创作，主要内容包括：本发明属于陶瓷前驱体技术领域,公开了一种高产率陶瓷及其制备方法和应用,所述方法是将前驱体原材料碾碎过筛后进行压制,在保护气氛下300～800℃热处理,得到改性的前驱体；再将改性的前驱体再进行碾碎过筛后压制,在真空或保护气氛下800～1200℃进行裂解,得到高产率的陶瓷。本发明制得了高产率和高品质的陶瓷,所述高产率陶瓷的产率为80～99％；所述陶瓷的粒径为0.01～10μm。该高产率陶瓷可应用在增材制造、航空航天以或核能等领域。(The invention belongs to ceramic forerunner technical field, a kind of high yield ceramics and its preparation method and application are disclosed, the method is suppressed after presoma raw material to be pulverized to sieving, and 300~800 DEG C of heat treatment, obtains modified presoma under protective atmosphere；Modified presoma is carried out again to suppress after pulverizing sieving again, is cracked for 800~1200 DEG C under vacuum or protective atmosphere, obtains the ceramics of high yield.The ceramics of high yield and high-quality have been made in the present invention, and the yield of the high yield ceramics is 80~99%；The partial size of the ceramics is 0.01~10 μm.The high yield ceramics can be applicable to increasing material manufacturing, aerospace with or the fields such as nuclear energy.)

1. a kind of preparation method of high yield ceramics, which is characterized in that comprise the following specific steps that:

S1. it is suppressed after presoma raw material being pulverized sieving, 300~800 DEG C of heat treatment, is modified under protective atmosphere Presoma；

S2. modified presoma is carried out suppressing after pulverizing sieving again, is split for 800~1200 DEG C under vacuum or protective atmosphere Solution obtains high yield ceramics.

2. the preparation method of high yield ceramics according to claim 1, which is characterized in that presoma described in step S1 is former Material is Polycarbosilane or polysilazane, and the ceramic yield of the precursor material is 10~50%.

3. the preparation method of high yield ceramics according to claim 1, which is characterized in that heat treatment described in step S1 Time is 0.5~2h.

4. the preparation method of high yield ceramics according to claim 1, which is characterized in that cracking described in step S2 when Between be 0.5~2h.

5. the preparation method of high yield ceramics according to claim 1, which is characterized in that ceramic production described in step S2 Rate is 80~99%.

6. the preparation method of high yield ceramics according to claim 1, which is characterized in that ceramic oxygen described in step S2 Content is 0.01~0.2wt%；The partial size of particle is 0.01~10 μm in the ceramics.

7. the preparation method of high yield ceramics according to claim 1, which is characterized in that protected described in step S1 and S2 Atmosphere is nitrogen or argon gas.

8. a kind of high yield ceramics, which is characterized in that the high yield ceramics are by the described in any item methods of claim 1-7 It is made.

9. high yield according to claim 8 ceramics, which is characterized in that the yield of the high yield ceramics for 80~ 99%；The partial size of particle is 0.01~10 μm in the ceramics.

10. application of the high yield ceramics described in claim 8 or 9 in increasing material manufacturing, aerospace or nuclear energy field.

Technical field

The invention belongs to ceramic forerunner technical fields, more particularly, to a kind of high yield ceramics and preparation method thereof And application.

Background technique

Structural ceramics generally all has the good characteristics such as high-strength, high hard, high temperature resistant, corrosion-resistant and anti-neutron irradiation, is The critical material of the departments such as automobile, machinery, metallurgy and aerospace exploitation new technology.However, ceramic material is because of its brittleness, greatly The preparation of Complex Different Shape part is limited, ceramics can be prepared in ceramic forerunner after Pintsch process, therefore presoma can be used to Increasing material manufacturing molding is directly carried out, then carries out anisotropic part required for cracking-being sintered acquisition, equally, presoma can also be used as It is connected between a kind of connecting material progress is ceramic.

However, all there is its low yield when using presoma in increasing material manufacturing or connection area more than either The problem of, for increasing material manufacturing, yield is too low to will cause subsequent cracking-biggish volume contraction of sintering generation, to influence ruler Very little precision and mechanical property；For connection area, it is easy because yield is too low so that connection procedure center tap generates larger sky Gap influences switching performance.In order to solve problem above, the method for being badly in need of seeking to improve precursor ceramic yield, current research It is concentrated mainly on from synthesis presoma, to improve the yield of presoma；However, these preparation methods condition is excessively harsh, no It is easy to industrial application, excessively limits to.

Summary of the invention

In order to solve above-mentioned the shortcomings of the prior art and disadvantage, a kind of preparation method of high yield ceramics is provided.It should Method is directly modified the presoma of low-yield, to improve its ceramic yield, the method has easy to operate, can advise greatly Mould uses, and fundamentally solves the problems, such as presoma low yield.

Another object of the present invention is to provide the high yield ceramics of above method preparation.

A further object of the present invention is to provide the applications of above-mentioned high yield ceramics.

The purpose of the present invention is realized by following technical proposals:

A kind of preparation method of high yield ceramics, comprises the following specific steps that:

S1. it is suppressed after presoma raw material being pulverized sieving, 300~800 DEG C of heat treatment, obtains under protective atmosphere Modified presoma；

S2., suppressed after modified presoma to be carried out to pulverizing sieving again, under vacuum or protective atmosphere 800~1200 DEG C into Row cracking obtains high yield ceramics.

Preferably, precursor material described in step S1 is Polycarbosilane or polysilazane, the pottery of the precursor material Porcelain yield is 10~50%.

Preferably, the time of heat treatment described in step S1 is 0.5~2h.

Preferably, the time of cracking described in step S2 is 0.5~2h.

Preferably, yield ceramic described in step S2 is 80~99%.

Preferably, oxygen content ceramic described in step S2 is 0.01~0.2wt%；The partial size of particle is in the ceramics 0.01~10 μm.

Preferably, protective atmosphere described in step S1 and S2 is nitrogen or argon gas.

A kind of high yield ceramics, the high yield ceramics are made by the method.

Preferably, the yield of the high yield ceramics is 80~99%；The partial size of particle is 0.01~10 μ in the ceramics m。

Application of the high yield ceramics in increasing material manufacturing, aerospace or nuclear energy field.

Compared with prior art, the invention has the following advantages:

1. ceramics of the invention are using low-yield ceramic forerunner as raw material, by Cold pretreatment early period, at heat Reason carries out strand adjustment, significantly improves strand presoma yield adjusted, then pretreated ceramic forerunner is passed through Cracking processing, is remarkably improved the yield of ceramic particle.

2. the present invention by being directly modified to low-yield presoma, largely improves the yield of presoma, should Method is simple, can scale use, it is at low cost.

3. the ceramic particle purity of present invention cracking preparation is higher, size tunable.

Detailed description of the invention

Fig. 1 is the thermogravimetric analysis figure of the modified presoma of embodiment 1.

Fig. 2 is the XRD diagram of the SiC ceramic presoma of embodiment 1.

Specific embodiment

The contents of the present invention are further illustrated combined with specific embodiments below, but should not be construed as limiting the invention. Unless otherwise specified, the conventional means that technological means used in embodiment is well known to those skilled in the art.Except non-specifically Illustrate, reagent that the present invention uses, method and apparatus is the art conventional reagents, method and apparatus.