Zero shrinks the preparation method of LTCC multilayer ceramic substrates

The invention discloses the preparation method that a kind of zero shrinks LTCC multilayer ceramic substrates, the lamination that the preparation method includes green idiosome prepares, is respectively sequentially placed one layer of porous ceramics pressing plate and one layer of porous silicon carbide pressing plate in the upper and lower surface of green idiosome, it is placed in pressure apparatus, first heat up dumping, heat up sintering again, surface covering is removed after using pressure assisted sintering, sintering in the sintering process that heats up, zero contraction LTCC multilayer ceramic substrates are obtained.The preparation method of the present invention is simple and easy to apply, with low cost, can effectively control repeatability between the uniformity of contractibility, shrinkage factor piece to can be controlled between ± 0.05%.