摘要:
A unique sequence of steps is provided to reduce contaminants along one or more surfaces and faces of gold evaporative sources without deleteriously impacting the structure of the gold evaporative sources. Edges are deburred; contaminants are successfully removed therealong; and surface smoothness is substantially retained. The resultant gold evaporative source is suitable for use in evaporative processes as a precursor to gold film deposition without the occurrence or a substantial reduction in the likelihood of spitting by virtue of significantly reduced levels of contaminants, in comparison to gold evaporative sources subject to a standard cleaning protocol.
摘要:
The present invention relates to a method and apparatus of forming a sputter target assembly having a controlled solder thickness. In particular, the method includes the introduction of a bonding foil, between the backing plate and the sputter target, wherein the bonding foil is an ignitable heterogeneous stratified structure for the propagation of an exothermic reaction.
摘要:
The sputter target has a composition selected from the group consisting of high-purity copper and copper-base alloys. The sputter target's grain structure is at least about 99 percent recrystallized; and the sputter target's face has a grain orientation ratio of at least about 10 percent each of (111), (200), (220) and (311). In addition, the sputter target has a grain size of less than about 10 μm for improving sputter uniformity and reducing sputter target arcing.
摘要:
A method for dry treating a sputter target using a plasma to significantly reduce burn-in time of the target by removing surface contaminants and also a minimal thickness of the deformed layer characteristics of a machined surface, the target so produced, and apparatus used for the target treatment.
摘要:
The high-purity aluminum sputter target is at least 99.999 weight percent aluminum and has a grain structure. The grain structure is at least 99 percent recrystallized and has a grain size of less than 200 μm. The method forms high-purity aluminum sputter targets by first cooling a high-purity target blank to a temperature of less than −50 ° C. and then deforming the cooled high-purity target blank introduces intense strain into the high-purity target. After deforming, recrystallizing the grains at a temperature below 200 ° C. forms a target blank having at least 99 percent recrystallized grains. Finally, finishing at a low temperature sufficient to maintain the fine grain size of the high-purity target blank forms a finished sputter target.
摘要:
A method for determining actual size of internal target defects by ultrasonic inspection is provided in which the amplitude of signals generated by ultrasonic inspection are compared to metallurgical size measurements obtained through the use of optical microscopes or scanning electron microscopes or scanning election microscopes. From this comparison, a correlation factor may be obtained to determine the accuracy of the ultrasonic measurements. For a particular sputter target material, defect sizes obtained by ultrasonic inspection may then be multiplied by the correlation factor to determine the actual defect size for that defect. The use of actual defect sizes to determine defect sizes from ultrasonic inspection provides a more accurate determination of defect sizes than prior methods and provides a reliable means for accepting or rejecting targets for critical circuit manufacturing operations.
摘要:
A target assembly in which the sputtering material is not soldered or otherwise metallurgically bonded to a backing plate. Rather, the target, which is homogeneously manufactured of sputtering material, is mechanically coupled (e.g., with bolts) to an adapter, which is itself permanently affixed to the chamber. As a result, the target can be easily uncoupled from the chamber and replaced, without also requiring removal and replacement of a backing plate.
摘要:
A metal matrix composite is produced by forming a rapidly solidified aluminum base alloy into powder. The powder is plasma sprayed onto at least one substrate having thereon a fiber reinforcing material to form a plurality of preforms. Each of the preforms has a layer of the alloy deposited thereon, and the fiber reinforcing material is present in an amount ranging from about 0.1 to 75 percent by volume thereof. The preforms are bonded together to form an engineering shape.
摘要:
A metal matrix composite is produced by forming a rapidly solidified aluminum base alloy into powder. The powder is plasma sprayed onto at least one substrate having thereon a fiber reinforcing material to form a plurality of preforms. Each of the preforms has a layer of the alloy deposited thereon, and the fiber reinforcing material is present in an amount ranging from about 0.1 to 75 percent by volume thereof. The preforms are bonded together to form an engineering shape.
摘要:
A dispersion strengthened, non-heat treatable aluminum base alloy is formed into useful shapes by compacting under vacuum a powder composed of particles produced by rapid solidification of the alloy to obtain a compacted billet; forming said billet into rolling stock at a temperature ranging from incipient forming temperature to about 500.degree. C.; and rolling the stock to reduce the thickness thereof by subjecting the stock to at least one rolling pass, the stock having a percent thickness per pass ranging up to about 25 percent and a stock temperature ranging from about 230.degree. C. to about 500.degree. C.