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Nonmetal mineral cordierite type microwave dielectric ceramic and preparation method thereof
The invention discloses a nonmetal mineral cordierite type microwave dielectric ceramic material which is prepared by sintering the following raw materials: black talcum powder, coal series kaolin mineral powder, bauxite powder and a Sm-Mn composite sintering aid, and the Sm-Mn composite sintering aid is prepared by presintering Sm2O3 and Mn (NO3) 2.4 H2O, the non-metal mineral cordierite type microwave dielectric ceramic material is prepared from the following raw materials in percentage by mass: 46 to 49 percent of black talcum powder, 15 to 19 percent of coal series kaolin mineral powder, 27 to 31 percent of bauxite powder, 0.5 to 1.5 percent of Sm2O3 and 4.5 to 5.5 percent of Mn (NO3) 2.4 H2O according to the total amount of the black talcum powder, the coal series kaolin mineral powder, the bauxite powder, the Sm2O3 and the Mn (NO3) 2.4 H2O, the main phase of the non-metal mineral cordierite type microwave dielectric ceramic material is cordierite Mg2Al4Si5O18, and the secondary phase of the non-metal mineral cordierite type microwave dielectric ceramic material is SmMn2O5 and MnO2. The preparation method comprises the following steps: firstly, sintering the Sm-Mn composite sintering aid, then mixing the sintered Sm-Mn composite sintering aid with the mineral raw materials in proportion, and preparing by a solid-phase sintering method. The non-metal mineral microwave dielectric ceramic material prepared by the invention solves the problem of deterioration of microwave dielectric properties caused by mineral raw material impurities.
本发明公开了一种非金属矿质堇青石型微波介质陶瓷材料，由以下原料烧结而得：黑滑石粉、煤系高岭土矿粉、铝矾土粉和Sm‑Mn复合烧结助剂，所述Sm‑Mn复合烧结助剂由Sm2O3和Mn(NO3)2·4H2O预烧结制成，各原料以黑滑石粉、煤系高岭土矿粉、铝矾土粉、Sm2O3和Mn(NO3)2·4H2O的总量计算质量百分比为黑滑石粉占46～49％，煤系高岭土矿粉占15～19％，铝矾土粉占27～31％，Sm2O3占0.5～1.5％，Mn(NO3)2·4H2O占比4.5～5.5％，所述非金属矿质堇青石型微波介质陶瓷材料的主物相是堇青石Mg2Al4Si5O18，次物相为SmMn2O5和MnO2。本发明还公开其制备方法，先烧结Sm‑Mn复合烧结助剂，然后与矿物原料按比例混合，通过固相烧结法制备。本发明制备的非金属矿质微波介质陶瓷材料，解决了矿物原料杂质导致的微波介电性能的恶化问题。
Nonmetal mineral cordierite type microwave dielectric ceramic and preparation method thereof
The invention discloses a nonmetal mineral cordierite type microwave dielectric ceramic material which is prepared by sintering the following raw materials: black talcum powder, coal series kaolin mineral powder, bauxite powder and a Sm-Mn composite sintering aid, and the Sm-Mn composite sintering aid is prepared by presintering Sm2O3 and Mn (NO3) 2.4 H2O, the non-metal mineral cordierite type microwave dielectric ceramic material is prepared from the following raw materials in percentage by mass: 46 to 49 percent of black talcum powder, 15 to 19 percent of coal series kaolin mineral powder, 27 to 31 percent of bauxite powder, 0.5 to 1.5 percent of Sm2O3 and 4.5 to 5.5 percent of Mn (NO3) 2.4 H2O according to the total amount of the black talcum powder, the coal series kaolin mineral powder, the bauxite powder, the Sm2O3 and the Mn (NO3) 2.4 H2O, the main phase of the non-metal mineral cordierite type microwave dielectric ceramic material is cordierite Mg2Al4Si5O18, and the secondary phase of the non-metal mineral cordierite type microwave dielectric ceramic material is SmMn2O5 and MnO2. The preparation method comprises the following steps: firstly, sintering the Sm-Mn composite sintering aid, then mixing the sintered Sm-Mn composite sintering aid with the mineral raw materials in proportion, and preparing by a solid-phase sintering method. The non-metal mineral microwave dielectric ceramic material prepared by the invention solves the problem of deterioration of microwave dielectric properties caused by mineral raw material impurities.
本发明公开了一种非金属矿质堇青石型微波介质陶瓷材料，由以下原料烧结而得：黑滑石粉、煤系高岭土矿粉、铝矾土粉和Sm‑Mn复合烧结助剂，所述Sm‑Mn复合烧结助剂由Sm2O3和Mn(NO3)2·4H2O预烧结制成，各原料以黑滑石粉、煤系高岭土矿粉、铝矾土粉、Sm2O3和Mn(NO3)2·4H2O的总量计算质量百分比为黑滑石粉占46～49％，煤系高岭土矿粉占15～19％，铝矾土粉占27～31％，Sm2O3占0.5～1.5％，Mn(NO3)2·4H2O占比4.5～5.5％，所述非金属矿质堇青石型微波介质陶瓷材料的主物相是堇青石Mg2Al4Si5O18，次物相为SmMn2O5和MnO2。本发明还公开其制备方法，先烧结Sm‑Mn复合烧结助剂，然后与矿物原料按比例混合，通过固相烧结法制备。本发明制备的非金属矿质微波介质陶瓷材料，解决了矿物原料杂质导致的微波介电性能的恶化问题。
Nonmetal mineral cordierite type microwave dielectric ceramic and preparation method thereof
一种非金属矿质堇青石型微波介质陶瓷及其制备方法
ZHAO SHUAIYU (author) / WANG XIN (author) / LI YUHUI (author) / WANG ZHEFEI (author) / YU LEI (author) / LIU ZIZHENG (author) / WANG JIALE (author)
2024-06-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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