Properties of Coated Refractory Metals
Properties of Coated Refractory Metals

Author: W. A. Gibeaut

Publisher:

Published: 1964

Total Pages: 104

ISBN-13:

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This report summarizes the information generated since the middle of 1961 on the chemical, physical, and mechanical properties of refractory metals that are coated with oxidation-resistant coatings of advanced-experimental or commercial status. It is a supplement to DMIC Report 162, Coatings for the Protection of Refractory Metals from Oxidation, dated November 24, 1961. Recent data on specific silicide- and aluminide- type coatings for columbium, molybdenum, tantalum, and tungsten and their alloys reflect general advances in coating quality and performance, understanding of the behavior of coated systems, and more complete realization of the problems associated with the use of coated hardware.

The Effects of High Pressure, High Temperature Hydrogen on Steel
The Effects of High Pressure, High Temperature Hydrogen on Steel

Author: Ellis E. Fletcher

Publisher:

Published: 1964

Total Pages: 82

ISBN-13:

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This report deals with the deleterious effects of hydrogen gas on steel at elevated temperatures and/or pressures. Hydrogen attack on steels is manifest as decarburization, intergranular fissuring, or blistering. These conditions result in lowered tensile strength, ductility, and impact strength. The reaction of hydrogen with iron carbide to form methane is probably the most important chemical reaction involved in the attack on steel by hydrogen. Attack of steel at elevated temperatures and pressures is limited or prevented by the following measures: (1) use of steel alloyed with strong carbide-forming elements, (2) use of liners of resistant alloy steels, and (3) substitution of resistant nonferrous alloys.

The Engineering Properties of Tantalum and Tantalum Alloys
The Engineering Properties of Tantalum and Tantalum Alloys

Author: F. F. Schmidt

Publisher:

Published: 1963

Total Pages: 134

ISBN-13:

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This report presents the results of a state-of-the-art survey covering tantalum and seven of its alloys. All data are given in tabular and graphical form covering some of the more important physical, mechanical, and metallurgical properties for each material. References are given at the conclusion of each material section.

The Engineering Properties of Tungsten and Tungsten Alloys
The Engineering Properties of Tungsten and Tungsten Alloys

Author: F. F. Schmidt

Publisher:

Published: 1963

Total Pages: 154

ISBN-13:

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The results of a state-of-the-art survey covering tungsten and ten of its alloys are presented. All data are given in tabular and graphical form covering some of the more important physical, mechanical, and metallurgical properties for each material. References are given at the conclusion of each material section.

The Engineering Properties of Columbium and Columbium Alloys
The Engineering Properties of Columbium and Columbium Alloys

Author: F. F. Schmidt

Publisher:

Published: 1963

Total Pages: 264

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The results of a state-of-the-art survey covering niobium and 18 of its most promising alloys are presented. All data are given in tabular and graphical form covering some of the more important physical, mechanical, and metallurgical properties for each material. References are given at the conclusion of each material section.