| 简介 |
PROBLEM TO BE SOLVED : To obtain a sintered glass-ceramic which can be fired with low- electroresistance metals such as silver, copper and gold, and preferably with the silver, and has a high thermal conductivity and a wiring board having high dimensional accuracy. SOLUTION : The wiring board furnished with an insulating substrate 1 and a wiring layer 2 disposed on the surface of and/or within the same is formed by a sintered glass-ceramic compact which contains, as constitution components, at least Si, Al, rear earth elements (RE), Zn and/or Mg, contains, as a crystal phase, at least one kind selected from the group of gahnite, spinel, forsterite and enstatite and an AlN crystal phase and/or Si3 N4 crystal phase and further, contains a rear earth-containing crystal phase and of which the relative density is >=95% and the thermal conductivity is >=2 W/m.K. |
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