A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Powder sintering method for reducing double-twin crystal defect density in BaTiO3 ceramic
The invention discloses a powder sintering method for reducing double-twin crystal defect density in BaTiO3 ceramic, which comprises the following steps of: calcining undoped BaTiO3 commercial nano powder in an energy-saving box type electric furnace at 800 DEG C to enable the powder to be in full contact with air, and then putting the calcined powder into a spark plasma sintering (SPS) device for sintering to 900-1200 DEG C. Compared with the SPS sintering of the powder which is not calcined in the air, the double-twin crystal defect density of a sample is greatly reduced through a proper powder calcining atmosphere.
本发明公开了一种降低BaTiO3陶瓷中双孪晶缺陷密度的粉末烧结方法，该方法包括如下步骤：将无掺杂BaTiO3商业纳米粉末在节能箱式电炉中800℃煅烧，使得粉末和空气充分接触，接着将煅烧后的粉末放入放电等离子烧结(SPS)中烧结至900℃～1200℃之间。与未在空气中煅烧的粉末在SPS烧结相比，本发明通过合适的粉末煅烧气氛，大大降低了样品的双孪晶缺陷密度。
Powder sintering method for reducing double-twin crystal defect density in BaTiO3 ceramic
The invention discloses a powder sintering method for reducing double-twin crystal defect density in BaTiO3 ceramic, which comprises the following steps of: calcining undoped BaTiO3 commercial nano powder in an energy-saving box type electric furnace at 800 DEG C to enable the powder to be in full contact with air, and then putting the calcined powder into a spark plasma sintering (SPS) device for sintering to 900-1200 DEG C. Compared with the SPS sintering of the powder which is not calcined in the air, the double-twin crystal defect density of a sample is greatly reduced through a proper powder calcining atmosphere.
本发明公开了一种降低BaTiO3陶瓷中双孪晶缺陷密度的粉末烧结方法，该方法包括如下步骤：将无掺杂BaTiO3商业纳米粉末在节能箱式电炉中800℃煅烧，使得粉末和空气充分接触，接着将煅烧后的粉末放入放电等离子烧结(SPS)中烧结至900℃～1200℃之间。与未在空气中煅烧的粉末在SPS烧结相比，本发明通过合适的粉末煅烧气氛，大大降低了样品的双孪晶缺陷密度。
Powder sintering method for reducing double-twin crystal defect density in BaTiO3 ceramic
一种降低BaTiO3陶瓷中双孪晶缺陷密度的粉末烧结方法
WU GUOQIANG (author) / HU JIANFENG (author) / LIU WENJIE (author) / JIANG YIBIN (author)
2022-01-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Spark-plasma-sintering of fine BaTiO3 powder prepared by a sol-crystal method
| British Library Online Contents | 2001
| European Patent Office | 2022
Crystal-structure dependent domain-switching behavior in BaTiO3 ceramic
| British Library Online Contents | 2014