RADIATION RESISTANCE OF FOAMED GLASS
The radiation resistance of two types of foamed glass was studied. The first type was prepared from 90 to 95% alkali window glass (71.5% SiO/sub 2/, 1 to 1.5% Al/sub 2/O/sub 3/, 7.5 to 8% CaO, 3 to 3.5% MgO, 15% Na/sub 2/O) and 16 to 5% Al/sub 2/O/sub 3/, TiO/sub 2/, or ZrO/sub 2/, with the addition of 6.5 to 1% SiC or carbon black, or 4% MnO as foaming agents. The second type was prepared from 70 to 80% nonalkali barium glass (66.5% SiO/sub 2/, 14.6% Al/sub 2/ O/sub 3/, 16.2% CaO, 8.7% BaO, +2% Fe) and 30 to 20% Cr/sub 2/O/sub 3/ or ZrO/sub 2/, with the addition of 0.5 to 1% SiC or carbon black. The approximate service temperature of the glasses is 600 to 800 deg C; the highest compressive strength, 31.7 to 74.4 kg/cm/sup 2/, is exhibited by specimens produced with the use of SiC. The glasses were irradiated with thermal neutrons for 84 hr (total flux about 10/ sup 18/ neutrons/ cm/sup 2/) and subjected to compression tests. The tests showed that the mechanical strength of the specimens remained almost unchanged. It was concluded that foamed glasses from alkali window glass and TiO/sub 2/ or ZrO/sub 2/ and from nonalkali Ba glass with Cr/sub 2/O/sub 3/ or ZrO/sub 2/ are resistant to radiation and can be used as heat-resistant thermal insulation in equipment exposed to gamma-neutron radiation. (OTS)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-031034
- OSTI ID:
- 4681497
- Journal Information:
- Steklo i Keram, Vol. Vol: No. 5; Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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