Abstract: A selective film deposition method includes exposing a substrate having a structure on which a first surface region containing a metal element and a second surface region containing a nonmetal inorganic material are both exposed, to a solution containing an organic substance represented by formula (1) shown below and a solvent to deposit a film of the organic substance on the first surface region selectively over the second surface region: R1(X)m (1) wherein R1 is a C4-C100 hydrocarbon group optionally containing a heteroatom or a halogen atom, and m hydrogen atoms of the hydrocarbon group are replaced with X; X is —PO3(R2)2, —O—PO3(R2)2, —CO2R2, —SR2, or —SSR1; each R2 is a hydrogen atom or a C1-C6 alkyl group; and m is a positive integer, and m/r is 0.01 to 0.25 where r is the number of carbons of the hydrocarbon group.

Abstract: The improved superalloy that possesses all the characteristics required of the high-temperature structural material of high-temperature gas-cooled reactors (i.e., high-temperature strength, corrosion resistance, good producibility, good hot workability and resistance to embrittlement due to thermal aging) consists essentially of 16-28% Cr, 15-24% W (provided that Cr+W=39-44%), 0.01-0.1% Zr, 0.001-0.015% Y, 0.0005-0.01% B, up to 0.05% C, up to 0.1% Si, up to 0.1% Mn (provided that Si+Mn.ltoreq.0.1%), up to 0.1% Ti, up to 0.1% Al and up to 0.1% Nb (provided that Ti+Al.ltoreq.0.1% and Ti+Al+Nb.ltoreq.0.15%), with the balance being Ni and inevitable impurities and all percentages being on a weight basis.

Abstract: The improved superalloy that possesses all the characteristics required of the high-temperature structural material of high-temperature gas-cooled reactors (i.e., high-temperature strength, corrosion resistance, good productibility, good hot workability and resistance to embrittlement due to thermal aging) consists essentially of 16-28% Cr. 15-24% W (provided that Cr+W=39-44%), 0.01-0.1% Zr, 0.001-0.015% Y, 0.0005-0.01% B, up to 0.05% C, up to 0.1% Si, up to 0.1% Mn (provided that Si+Mn.gtoreq.0.1%), up to 0.1% Ti, up to 0.1% Al and up to 0.1% Nb (provided that Ti+Al.gtoreq.0.1% and Ti+Al+Nb.gtoreq.0.15%), with the balance being Ni and inevitable impurities and all percentages being on a weight basis.

Abstract: The high temperature mechanical strength of relatively inexpensive 18-8 stainless steel is improved by adding Cu, Co, Ti and Nb, and the decrease in the ductility caused by the addition of these elements is compensated for by addition of Mg or Y or Ca, Ce and La.

Abstract: A solid solution strengthened iron-base austenitic alloy is suitable for use in nuclear reactors having low oxidizing environment. It has a composition of 8 up to but not including 16.0% by weight of Cr, 14-35% by weight of Ni, 5-15% by weight of Mo plus 0.522 W, up to 1.0% by weight of Ti, up to 2% by weight of Mn, up to 1% by weight of Si, up to 0.1% by weight of C and the balance iron and unavoidable impurities.

Abstract: A nickel-base alloy excellent in corrosion resistance at high temperatures, which consists essentially of, in weight percentage:Carbon -- 0.04 to 0.25%,Chromium -- 10.0 to 25.0%,At least one element selected from the group consisting of 0.1 to 30.0% iron, 0.1 to 25.0% tungsten, 0.1 to 10.0% molybdenum and 0.05 to 30.0% cobalt -- 50.0% at the maximum,Manganese -- 0.4 to 1.5%,Silicon -- 0.05 to 0.5%, preferably 0.05 to 0.2%, andNickel and inevitable impurities -- balance;Said alloy having excellent corrosion resistance at high temperatures in an atmosphere of a low oxidizing potential.Said alloy contains, as required, the following additional elements:Boron -- 0.001 to 0.05%,Zirconium -- 0.1 to 0.1%, andAt least one element selected from the group consisting of 0.001 to 0.02% magnesium, 0.001 to 0.05% calcium and 0.001 to 0.02% rare earth elements.