Abstract:
Boron, oxygen, or a mixture thereof, is used as a sintering aid in sintering Mo-Ti alloys. Compounds formed between these sintering aids and the Mo or Ti have thermal expansion coefficients consistent with that of alloys of Mo and Ti. An hermetic member (12) may be made using these constituents. The hermetic member (12) may be used to seal an assembly such as a high pressure sodium lamp (10).
Abstract:
A molten charge containing the constituents of a eutectic composition of a semiconductor material and a conductive material, for example silicon and TaSi₂, in the proportions of the eutectic composition is prepared. A composite mass is pulled from the melt, and consists of a matrix (11) of single crystal semiconductor material having an array of individual rods (12) of the conductive material disposed therein. The rods (12) form Schottky barriers with the semiconductor material (11). A body (10) is cut from the composite mass. A semiconductor device, specifically an FET, is fabricated from the body (10) by making gate contact (20) to several of the rods (12) at one end, and source (30) and drain (31) contacts to the matrix (11) of semiconductor material. Current flow in the semiconductor material of the matrix (11) between the source (30) and the drain (31) is controlled by applying biasing potential to the gate contact (20) to enlarge the depletion zones around the rods.
Abstract:
A molten charge containing the constituents of a eutectic composition of a semiconductor material and a conductive material, for example silicon and TaSi₂, in the proportions of the eutectic composition is prepared. A composite mass is pulled from the melt, and consists of a matrix (11) of single crystal semiconductor material having an array of individual rods (12) of the conductive material disposed therein. The rods (12) form Schottky barriers with the semiconductor material (11). A body (10) is cut from the composite mass. A semiconductor device, specifically an FET, is fabricated from the body (10) by making gate contact (20) to several of the rods (12) at one end, and source (30) and drain (31) contacts to the matrix (11) of semiconductor material. Current flow in the semiconductor material of the matrix (11) between the source (30) and the drain (31) is controlled by applying biasing potential to the gate contact (20) to enlarge the depletion zones around the rods.
Abstract:
Boron, oxygen, or a mixture thereof, is used as a sintering aid in sintering Mo-Ti alloys. Compounds formed between these sintering aids and the Mo or Ti have thermal expansion coefficients consistent with that of alloys of Mo and Ti. An hermetic member (12) may be made using these constituents. The hermetic member (12) may be used to seal an assembly such as a high pressure sodium lamp (10).