Browse Prior Art Database

HASTALLOY C COATING CRUCIBLES

IP.com Disclosure Number: IPCOM000026667D
Original Publication Date: 1993-Feb-28
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 49K

Publishing Venue

Xerox Disclosure Journal

Abstract

Vacuum coating crucibles constructed of Hastalloy C for use in the preparation of alloy based photoreceptors is disclosed. Hastalloy C is available from Haynes-Stellite Corporation, a division of Union Carbide Corporation, and contains about 57 to about 59% by weight of nickel, about 16% molybdenum, about 16% chromium, about 5% iron, about 4% tungsten, and trace amounts of manganese and silicon. Vacuum coating crucibles for evaporation "boats" constructed from Hastalloy C are less likely to warp under thermal stress and also provide more uniform heating of the crucible contents and thereby reduces alloy fractionation. Hastalloy C boats avoid the problem of surface cracking and corrosion which leads to subsequent contamination of the selenium alloy being processed.

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XEROX DISCLOSURE JOURNAL

HASTALLOY C COATING CRUCIBLES
Loren E. Hendrix
Alan B. Mistrater

Proposed Classification

U.S. C1.430/059 Int. C1. G03g 05/06

Vacuum coating crucibles constructed of Hastalloy C for use in the preparation of alloy based photoreceptors is disclosed. Hastalloy C is available from Haynes-Stellite Corporation, a division of Union Carbide Corporation, and contains about 57 to about 59% by weight of nickel, about 16% molybdenum, about 16% chromium, about 5% iron, about 4% tungsten, and trace amounts of manganese and silicon. Vacuum coating crucibles for evaporation "boats" constructed from Hastalloy C are less likely to warp under thermal stress and also provide more uniform heating of the crucible contents and thereby reduces alloy fractionation. Hastalloy C boats avoid the problem of surface cracking and corrosion which leads to subsequent contamination of the selenium alloy being processed.

XEROX DISCLOSURE JOURNAL - Voi. 18, No. 1 JanuaryE'ebruary 1993 101

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102 XEROX DISCLOSURE JOURNAL - Vol. 18, No. 1 JanuaryEebruary 1993

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