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Negative thermal expansion coefficient material TaMIV (PO4) 3 and preparation method thereof
The invention belongs to the field of thermal expansion materials, and discloses a negative thermal expansion coefficient material TaMIV (PO4) 3 and a preparation method thereof. And MIV is equal to Zr or Hf. The preparation method comprises the following steps: (1) weighing raw materials Ta2O5, MIVO2 and NH4H2PO4 according to a stoichiometric molar ratio Ta: MIV: P of a target product TaMIV (PO4) 3 of 1: 1: 3, then adding V2O5 accounting for 3-12wt% of the total mass of the Ta2O5, MIVO2 and NH4H2PO4, grinding until the materials are uniformly mixed, and sintering the obtained mixed powder at 500-700 DEG C for 6-10 hours; and (2) grinding the sintered product obtained in the step (1) into powder, tabletting, sintering at 1200-1300 DEG C for 6-24 hours, and cooling to room temperature to obtain the target product TaMIV (PO4) 3. The new NZP material TaMIV (PO4) 3 is found, thermal expansion tests of the materials show that the TaMIV (PO4) 3 series material has negative thermal expansion performance, the synthesis process is simple and reliable, and repeatability is high.
本发明属于热膨胀材料领域，公开一种负热膨胀系数材料TaMIV(PO4)3及其制备方法。MIV=Zr或Hf。（1）、按照目标产物TaMIV(PO4)3的化学计量摩尔比Ta∶MIV∶P=1∶1∶3，称取原料Ta2O5、MIVO2、NH4H2PO4，然后加入占Ta2O5、MIVO2和NH4H2PO4三者原料质量总和3~12 wt.%的V2O5，研磨至混合均匀，将得到的混合粉末在500~700℃下烧结6~10 h；（2）、将步骤（1）所得烧结产物研磨成粉然后压片并在1200~1300℃烧结6~24 h，冷却至室温后，得到目标产物TaMIV(PO4)3。本发明发现了新的NZP材料TaMIV(PO4)3，通过对这些材料的热膨胀测试发现，本发明TaMIV(PO4)3系列材料具有负热膨胀性能，其合成过程简单可靠，重复性高。
Negative thermal expansion coefficient material TaMIV (PO4) 3 and preparation method thereof
The invention belongs to the field of thermal expansion materials, and discloses a negative thermal expansion coefficient material TaMIV (PO4) 3 and a preparation method thereof. And MIV is equal to Zr or Hf. The preparation method comprises the following steps: (1) weighing raw materials Ta2O5, MIVO2 and NH4H2PO4 according to a stoichiometric molar ratio Ta: MIV: P of a target product TaMIV (PO4) 3 of 1: 1: 3, then adding V2O5 accounting for 3-12wt% of the total mass of the Ta2O5, MIVO2 and NH4H2PO4, grinding until the materials are uniformly mixed, and sintering the obtained mixed powder at 500-700 DEG C for 6-10 hours; and (2) grinding the sintered product obtained in the step (1) into powder, tabletting, sintering at 1200-1300 DEG C for 6-24 hours, and cooling to room temperature to obtain the target product TaMIV (PO4) 3. The new NZP material TaMIV (PO4) 3 is found, thermal expansion tests of the materials show that the TaMIV (PO4) 3 series material has negative thermal expansion performance, the synthesis process is simple and reliable, and repeatability is high.
本发明属于热膨胀材料领域，公开一种负热膨胀系数材料TaMIV(PO4)3及其制备方法。MIV=Zr或Hf。（1）、按照目标产物TaMIV(PO4)3的化学计量摩尔比Ta∶MIV∶P=1∶1∶3，称取原料Ta2O5、MIVO2、NH4H2PO4，然后加入占Ta2O5、MIVO2和NH4H2PO4三者原料质量总和3~12 wt.%的V2O5，研磨至混合均匀，将得到的混合粉末在500~700℃下烧结6~10 h；（2）、将步骤（1）所得烧结产物研磨成粉然后压片并在1200~1300℃烧结6~24 h，冷却至室温后，得到目标产物TaMIV(PO4)3。本发明发现了新的NZP材料TaMIV(PO4)3，通过对这些材料的热膨胀测试发现，本发明TaMIV(PO4)3系列材料具有负热膨胀性能，其合成过程简单可靠，重复性高。
Negative thermal expansion coefficient material TaMIV (PO4) 3 and preparation method thereof
一种负热膨胀系数材料TaMIV(PO4)3及其制备方法
GAO QILONG (author) / ZHOU ZHANYUAN (author) / ZHANG YUANJU (author) / ZHAO HUAN (author) / QIAO YONGQIANG (author)
2024-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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