遠心焼結による厚膜プロセス Thick Film Processing via Centrifugal Sintering
Constrained sintering, such sintering as thick films on rigid substrates, inherently involves the problem of macro-defect formation viz. crack and/or de-lamination. The origin of these defects lies in a mismatch of sintering shrinkage between different materials. To overcome the problem of film sintering, we have developed a novel sintering process, namely centrifugal sintering. The sintering is capable of applying the centrifugal acceleration of 100000 G during heating procedure. Due to the external pressure generated by centrifugal acceleration, shrinkage behavior of materials shows anisotropy: densification chiefly progresses along thickness direction of the film, while liner shrinkage along in-plane direction is limited. As a consequence, crack-free homogeneous microstructure is accomplished by the present process.
粉体および粉末冶金 55(3), 163-169, 2008-03-15
Japan Society of Powder and Powder Metallurgy