Metal treatment – Stock – Carburized or nitrided
Patent
1995-08-10
1997-11-04
Simmons, David A.
Metal treatment
Stock
Carburized or nitrided
148421, 420417, 141 65, C22C 1400, B65B 3104
Patent
active
056835230
ABSTRACT:
A light-weight super high vacuum vessel is disclosed in which a super high vacuum pressure over 10.sup.-10 Torr or over 10.sup.-11 Torr can be achieved using a simple evacuation system and/or with a sealing structure. The super high vacuum vessel contains a member comprising: from 0.02 wt. % to 1.00 wt. % of at least one platinum-group metal selected from the group consisting of Pd, Pt, Rh, Ru, Re, and Os; from 0.1 wt. % to 3.0 wt. % of at least one transition metal selected from the group consisting of Co, Fe, Cr, Ni, Mn, and Cu; from 0.1 wt. % to 3.0 wt. % of at least one rare earth series element selected from the group consisting of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, and Y; impurity elements of C, N, and O, C being equal to or less than 0.05 wt. %, N being equal to or less than 0.05 wt. %, O being equal to or less than 0.08 wt. %; and Ti and inevitable impurities.
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CA 120: 329013, 1994 (of JP 06-65,661 A2).
Fujita Kiyotaka
Ishimoto Seiji
Kikuchi Katsuichi
Nakanose Megumi
Nissan Motor Co,. Ltd.
Phipps Margery S.
Simmons David A.
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