High Temperature Oxidation Protective Coatings for Vanadium-Base Alloys

Item

Title
High Temperature Oxidation Protective Coatings for Vanadium-Base Alloys
Creator
Kane, L. I.
Rausch, J. J.
Holtz, F. C.
Date
1963
Abstract
The influence of thermal history for a standardized pack siliconizing process has been established for 0.020- to 0.030-inch sheet of the V-60w/o b-1 w/o Ti alloy. Studies of coating thickness as a function of siliconizing time over thickness as a function of siliconizing time over the temperature range of 2000 to 2200 F were made. Coating thickness of 2.25 to 2.75 mils appears to offer optimum oxidation protection based on static air oxidation tests at 2200 F; specimens were exposed for more than 500 hours without evidence of failure. Thick coatings (4 mils or greater) suffer gross delamination or sever cracking during elastic bending of sheet materials which results in a loss of protective capability. The thicker coatings also appear to behave poorly in high temperature, thermal oxidation tests in an oxygen-hydrogen torch.
Date Issued
1963-06-07
Extent
19
Corporate Author
Armour Research Foundation
Identifier
AD0406237
AD Number
AD-406 237
Contract
N600 19 59182
NTRL Accession Number
AD406237
Distribution Conflict
Yes
Index In
U.S. Government Research Reports, Vol. 38, No. 18, p. 30
Index Price
$1.60
Distribution Classification
2
DTIC Record Exists
Yes
Report Availability
Not available via Contrails
Type
report