Mitsubishi Pencil Company, Limited

Toshiki Oono

Kunitaka Yamada

Atsunori Satake

Takeshi Suzuki

This backing material for ultrasonic probes substantially comprises porous amorphous carbon.

Backing material for ultrasonic probe, method of manufacturing same, and ultrasonic probe

Provided are: a carbonaceous acoustic matching layer which exhibits satisfactory mechanical strength, in which losses at a layer interface are suppressed as far as possible and in which the degree of variation in acoustic impedance in the thickness direction can be increased; and a method for producing same. The carbonaceous acoustic matching layer is obtained by dispersing filler particles, which are selected on the basis of the desired acoustic impedance of each layer, in a resin such as a furan resin, a phenol resin or a vinyl chloride resin, curing, laminating, and then carbonizing the resin by heating in a non-oxidizing atmosphere, amorphous carbon, which is obtained by the resin carbonization, is integrated across all the layers. The blending proportion of the filler particles is decided so that the difference in coefficient of linear contraction caused by the carbonization is at a minimum between adjacent layers.

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Fujioka, Japan

Toshiki Oono