A NEW LOOK AT THE HYDROGEN EMBRITTLEMENT OF CADMIUM COATED HIGH STRENGTH STEELS. Period covered : January 1956 to May 1958
A reliable and sensitive test procedure for ascertaining detrimental hydrogen embrittlement as a result of cadmium plating was established. The test consists of a sustained loaded notched tensile specimen, loaded at 75% of the ultimate notched tensile strength for a minimum of 200 hours. Detrimental hydrogen embrittlement is shown to be dependent upon the steel alloy, the current efficiency of the cadmium plating bath, and the physical structure of cadmium coating obtained. Current efficiency- current density curves were obtained for the convertional cadmium cyanide bath, the high efficiency cadnnium cyanide bath, the cadmium suifamate bath, and the cadmium fluoborate bath. Cadmium electroplating processes for coating highstrength steel, 280,000 psi UTS, without detrimental hydrogen embrittlement are given. Vacuum cadmium metallizod coatings are also shown to be non-embrittling to high-strength steels. (auth)
- Research Organization:
- Wright Air Development Center. Materials Lab., Wright-Patterson AFB, Ohio
- NSA Number:
- NSA-13-010055
- OSTI ID:
- 4286738
- Report Number(s):
- WADC-TR-58-481; AD-206386
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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