摘要:
A non-planar sputter target having differing crystallographic orientations in portions of the sputter target surface that promote more desirable deposition and density patterns of material sputtered from the target surface onto a substrate. A closed dome end of the sputter target is comprised of a first crystallographic orientation and sidewalls of the sputter target are comprised of a crystallographic orientation different from that of the dome. The sputter target is formed, preferably by hydroforming or other metal working techniques, in the absence of annealing. The hydroforming manipulations result in the different crystallographic orientations while minimizing, or ideally omitting, the application of heat. Quick and cost effective non-planar sputter targets that are easily repeatably producable are achievable as a result.
摘要:
A vacuum seal having an O-ring between two mating parts. One of the mating parts has a groove configured to receive the O-ring. The groove has a modified dovetail shape with at least one side wall having a compound slope formed with a first portion forming an angle of less than 90 degrees with respect to a base wall and a second portion extending substantially perpendicular to the sealing face of the mating part. The cross-sectional area of the groove is less than 95% of the cross sectional area of the O-ring and the width of the groove mouth is at least 94% of the diameter of the O-ring.
摘要:
A device for hydraulically classifying solid fragments includes two side-by-side liquid-holding compartments between which liquid is continuously circulated; the liquid flows through a flow tube connecting the lower region of the first compartment with the second compartment, then flows upwardly through a throat zone in the first compartment and then over a weir back to the second compartment. The flow tube has a convergent mouth in the second compartment and a divergent outlet in the first compartment. A pump is arranged to withdraw a fraction of the circulating liquid from the second compartment and to inject that liquid into an eductor arranged at the mouth of the flow tube in the second compartment. Solids classification is accomplished at the throat zone: heavier solids sink through the throat zone, and lighter solids are carried upward in the rising current over the weir and onto a drainage screen.
摘要:
A method of making a diffusion bonded sputter target assembly is provided. A target blank comprising a first metal or alloy has a first surface defining a sputtering surface and a second surface. A second metal or alloy is placed around the target blank. A backing plate is provided adjacent the second metal or alloy that is positioned alongside of the second target surface. This assembly is then diffusion bonded, and a portion of the second metal overlying the sputtering surface of the target is removed to expose the target sputtering surface. W target or W alloy target/Ti or Ti alloy backing plate assemblies are provided with an Al interlayer positioned intermediate the W or W alloy target and backing plate. The assembly has a bond strength exceeding 50 MPa.
摘要:
A method of making a diffusion bonded sputter target assembly is provided. A target blank comprising a first metal or alloy has a first surface defining a sputtering surface and a second surface. A second metal or alloy is placed around the target blank. A backing plate is provided adjacent the second metal or alloy that is positioned alongside of the second target surface. This assembly is then diffusion bonded, and a portion of the second metal overlying the sputtering surface of the target is removed to expose the target sputtering surface. W target or W alloy target/Ti or Ti alloy backing plate assemblies are provided with an Al inter-layer positioned intermediate the W or W alloy target and backing plate. The assembly has a bond strength exceeding 50 MPa.
摘要:
Aluminum or aluminum alloy sputter targets and methods of making same are provided. The pure aluminum or aluminum alloy is mechanically worked to produce a circular blank, and then the blank is given a recrystallization anneal to achieve desirable grain size and crystallographic texture. A 10-50% additional strain is provided to the blank step after the annealing to increase the mechanical strength. Further, in a flange area of the target, the strain is greater than in the other target areas with the strain in the flange area being imparted at a rate of about 20-60% strain. The blank is then finished to form a sputtering target with desirable crystallographic texture and adequate mechanical strength.
摘要:
A code generator produces one sequence of coded pulses having a predetermined code pattern. This sequence of coded pulses is transmitted to a remote point and received from the remote point to provide a replica of the sequence of coded pulses. A correlator is coupled to the generator and receiver responsive to the sequence and its replica to produce due to the predetermined code pattern an impulse output only when the sequence and its replica are time coincident and a zero output at all other time relationships between the sequence and its replica.
摘要:
Aluminum or aluminum alloy sputter targets and methods of making same are provided. The pure aluminum or aluminum alloy is mechanically worked to produce a circular blank, and then the blank is given a recrystallization anneal to achieve desirable grain size and crystallographic texture. A 10-50% additional strain is provided to the blank step after the annealing to increase the mechanical strength. Further, in a flange area of the target, the strain is greater than in the other target areas with the strain in the flange area being imparted at a rate of about 20-60% strain. The blank is then finished to form a sputtering target with desirable crystallographic texture and adequate mechanical strength.
摘要:
A non-planar sputter target having differing crystallographic orientations in portions of the sputter target surface that promote more desirable deposition and density patterns of material sputtered from the target surface onto a substrate. A closed dome end of the sputter target is comprised of a first crystallographic orientation and sidewalls of the sputter target are comprised of a crystallographic orientation different from that of the dome. The sputter target is formed, preferably by hydroforming or other metal working techniques, in the absence of annealing. The hydroforming manipulations result in the different crystallographic orientations while minimizing, or ideally omitting, the application of heat. Quick and cost effective non-planar sputter targets that are easily repeatably producable are achievable as a result.
摘要:
The present invention generally provides a sputtering target comprising copper and a total of 0.001 wt %˜10 wt % alloying element or elements chosen from the group consisting of Al, Ag, Co, Cr, Ir, Fe, Mo, Ti, Pd, Ru, Ta, Sc, Hf, Zr, V, Nb, Y, and rare earth metals. An exemplary copper sputtering containing 0.5 wt % aluminum has superfine grain size, high thermal stability, and high electromigration resistance, and is able to form films with desired film uniformity, excellent resistance to electromigration and oxidation, and high adhesion to dielectric interlayer. An exemplary copper sputtering containing 12 ppm silver has superfine grain size. This invention also provides methods of manufacturing copper sputtering targets.