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Transition metal boride ceramic with low sintering temperature and preparation method thereof
The invention discloses transition metal boride ceramic with low sintering temperature and a preparation method thereof. The method comprises the following steps: weighing three to five of boride ceramic powder TaB2, TiB2, ZrB2, VB2, HfB2, ZrB2, NbB2, CrB2 and WB2 according to different molar ratios; the obtained boride ceramic powder is placed in a ball milling tank to be subjected to ball milling for 4-24 h, and the rotating speed ranges from 150 r/min to 360 r/min; 0.1-15 vol% of metal Co and 0.1-25 vol% of silicon carbide are added into the obtained boride ceramic powder to serve as sintering aids, then the mixture is placed in a ball milling tank to be subjected to ball milling for 4-24 h, and the rotating speed ranges from 150 r/min to 360 r/min; the obtained mixture powder is subjected to spark plasma sintering under the sintering conditions that firstly, the temperature is increased to 1450-1800 DEG C at the temperature increasing rate of 80-120 DEG C/min, heat preservation is conducted for 5-15 min, and then when the temperature reaches 800-1000 DEG C, a single-axis load of 30-50 MPa is applied; and finally, cooling to room temperature at the cooling speed of 80-120 DEG C/min. The low-sintering-temperature transition metal boride ceramic prepared by the preparation method disclosed by the invention has higher hardness and wear resistance compared with boride ceramic without introduction of metal Co and silicon carbide.
本发明公开了一种低烧结温度过渡金属硼化物陶瓷及其制备方法，该方法包括：将硼化物陶瓷粉末TaB2，TiB2，ZrB2，VB2，HfB2，ZrB2，NbB2，CrB2，WB2中的三到五种按照不同的摩尔比进行称量；将得到的硼化物陶瓷粉末置于球磨罐中进行球磨4~24h，转速150~360r/min；将得到的硼化物陶瓷粉末中加入0.1~15 vol%的金属Co和0.1~25 vol%的碳化硅作为烧结助剂，再置于球磨罐中进行球磨4~24h，转速150~360r/min；将得到的混合物粉末进行放电等离子烧结，烧结条件为：首先以80~120℃/min的升温速率升温至1450~1800℃，并保温5~15分钟，然后在温度达到800~1000℃时，施加30~50MPa的单轴载荷；最后以80~120℃/min的冷却速度冷却至室温。本发明制备出的低烧结温度过渡金属硼化物陶瓷比未引入金属Co和碳化硅的硼化物陶瓷具有更高的硬度和耐磨性。
Transition metal boride ceramic with low sintering temperature and preparation method thereof
The invention discloses transition metal boride ceramic with low sintering temperature and a preparation method thereof. The method comprises the following steps: weighing three to five of boride ceramic powder TaB2, TiB2, ZrB2, VB2, HfB2, ZrB2, NbB2, CrB2 and WB2 according to different molar ratios; the obtained boride ceramic powder is placed in a ball milling tank to be subjected to ball milling for 4-24 h, and the rotating speed ranges from 150 r/min to 360 r/min; 0.1-15 vol% of metal Co and 0.1-25 vol% of silicon carbide are added into the obtained boride ceramic powder to serve as sintering aids, then the mixture is placed in a ball milling tank to be subjected to ball milling for 4-24 h, and the rotating speed ranges from 150 r/min to 360 r/min; the obtained mixture powder is subjected to spark plasma sintering under the sintering conditions that firstly, the temperature is increased to 1450-1800 DEG C at the temperature increasing rate of 80-120 DEG C/min, heat preservation is conducted for 5-15 min, and then when the temperature reaches 800-1000 DEG C, a single-axis load of 30-50 MPa is applied; and finally, cooling to room temperature at the cooling speed of 80-120 DEG C/min. The low-sintering-temperature transition metal boride ceramic prepared by the preparation method disclosed by the invention has higher hardness and wear resistance compared with boride ceramic without introduction of metal Co and silicon carbide.
本发明公开了一种低烧结温度过渡金属硼化物陶瓷及其制备方法，该方法包括：将硼化物陶瓷粉末TaB2，TiB2，ZrB2，VB2，HfB2，ZrB2，NbB2，CrB2，WB2中的三到五种按照不同的摩尔比进行称量；将得到的硼化物陶瓷粉末置于球磨罐中进行球磨4~24h，转速150~360r/min；将得到的硼化物陶瓷粉末中加入0.1~15 vol%的金属Co和0.1~25 vol%的碳化硅作为烧结助剂，再置于球磨罐中进行球磨4~24h，转速150~360r/min；将得到的混合物粉末进行放电等离子烧结，烧结条件为：首先以80~120℃/min的升温速率升温至1450~1800℃，并保温5~15分钟，然后在温度达到800~1000℃时，施加30~50MPa的单轴载荷；最后以80~120℃/min的冷却速度冷却至室温。本发明制备出的低烧结温度过渡金属硼化物陶瓷比未引入金属Co和碳化硅的硼化物陶瓷具有更高的硬度和耐磨性。
Transition metal boride ceramic with low sintering temperature and preparation method thereof
一种低烧结温度过渡金属硼化物陶瓷及其制备方法
WANG LONG (author) / HUO ZILONG (author) / HU XINYUE (author) / LIU WEIMIN (author)
2024-03-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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