Glass manufacturing – Processes – Operating under inert or reducing conditions
Patent
1980-09-09
1982-07-13
Fisher, Richard V.
Glass manufacturing
Processes
Operating under inert or reducing conditions
65 66, 65 83, 65121, 65137, 65145, 65157, 148179, 148188, 357 2, C03B 700, C03B 1900, C03C 330
Patent
active
043392555
ABSTRACT:
The method for forming a metallic, dielectric or semiconductor modified amorphous glass material includes the steps of forming a fluid host matrix material on a substrate surface having relative movement thereto, such as a wheel; directing a fluid modifier material in a stream, as from a nozzle toward the substrate surface in a direction such that it converges with the host matrix material; maintaining the temperature of the substrate or wheel between 4.2.degree. K and ambient room temperature while rotating the wheel at a velocity of 1000 to 5000 rpm to obtain a surface velocity of between 1000 to 4000 centimeters per second thereby to obtain rapid quenching of the host and modifier materials as they contact one another at a rate of from 10.sup.4 to at least 10.sup.8 C per second or more to produce a ribbon of modified amorphous glass material in which the electrical and optical transport properties and the number and type of electronic configurations can be controlled.
The modified material can range from an alloy to various degrees of alloying and modification to one in which only modification and doping actions exist. This provides a new method of synthesizing materials in which modifier atoms can be incorporated at various intervals or layers or a bulk material whose surfaces can be distinctly chemically different from the bulk interior can be made by this process. The apparatus can include metal spinning apparati such as reservoirs, nozzles and the wheel for carrying out the method.
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patent: 4178415 (1979-12-01), Ovshinsky et al.
patent: 4217374 (1980-08-01), Ovshinsky et al.
patent: 4226898 (1980-10-01), Ovshinsky et al.
Chaudhari et al., "Metallic Glasses", Scientific American, Apr. 1980, vol. 242, No. 4, pp. 98-100, 102, 104-106, 108-110, 112, 114, 115.
Gilman, "Metallic Glasses", Science, May 1980, vol. 208, pp. 856-861.
Anthony et al., "On the Uniformity of Amorphous Metal Ribbon . . . ", J. Appl. Phys., Feb. 1978, vol. 49, No. 2, pp. 829-837.
Flasck Richard A.
Ovshinsky Stanford R.
Energy Conversion Devices Inc.
Fisher Richard V.
Norris Lawrence G.
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