| 摘要 |
A low temperature co-fired ceramic powder has a chemical composition of xR2O-yR′O-zM2O3-wM′O2, wherein R is Li, Na and/or K, R′ is Mg, Ca, Sr, Ba, Zn and/or Cu, M is B, Al, Ga, In, Bi, Nd, Sm, and/or La, M′ is Si, Ge, Sn, Ti, and/or Zr, x≧0, y≧0, z≧20%, w≧15%, and x+y+z+w=1. The preparation method comprises: weighing constituent powders according to the composition of the ceramic powder, and uniformly mixing these powders as a raw material powder; and presintering the raw material powder in a muffle furnace followed by grinding, the presintering comprising gradiently heating the raw material powder to a maximum temperature of 950° C. by first rising to 350-450° C. and staying thereat for a period, then staying at intervals of 50-100° C. for a period. |
| 主权项 |
1. A preparation method for a low temperature co-fired ceramic powder which has a chemical composition of xR2O-yR′O-zM2O3-wM′O2, wherein R is selected from at least one of Li, Na, and K, R′ is selected from at least one of Mg, Ca, Sr, Ba, Zn, and Cu, M is selected from at least one of B, Al, Ga, In, Bi, Nd, Sm, and La, M′ is selected from at least one of Si, Ge, Sn, Ti, and Zr, x, y, z, and w represent weight percentages, x≧0, y≧0, z≧20%, w≧15%, and x+y+z+w=1, the preparation method comprising the steps of:
1) weighing R2O powder, r′O powder, M2O3 powder, and M′O2 powder according to the composition of the low temperature co-fired ceramic powder, and uniformly mixing these powders as a raw material powder; and 2) presintering the raw material powder in a muffle furnace followed by grinding to give the low temperature co-fired ceramic powder, the presintering comprising gradiently heating the raw material powder to a maximum temperature of not higher than 950° C., during which a furnace temperature first rises to 350-450° C. and stays thereat for a period, then, as the temperature rises, stays at each interval of 50-100° C. thereabove for a period. |
