PROPERTIES OF TiB$sub 2$-CrB$sub 2$-ZrB$sub 2$ SYSTEM (in Russian)
ABSTRACTS The solubility of CrB/sub 2/ in the solid solutions of TiB/sub 2/-CrB/sub 2/ was investigated. The specimens were sintered at 2100 to 2550 deg C under 60 to 330 kg/cm/sup 2/ pressure and 0.5 to 5 min. soaking, followed by annealing in vacuum at 1900, 1500, and 1100 deg C with rapid cooling to room temperature. The solubilify of ZrB/sub 2/ in (Ti, Cr)B/sub 2/ is nearly 40 mole%, and (Ti, Cr)B/sub 2/ in ZrB/sub 2/ is less than 10 mole%. The solubility of ZrB/sub 2/ in CrB/sub 2/ increases in the birury boride (Ti, Cr)B/sub 2/ where ZrB/sub 2/ forms a continuous series of hard solutions with TiB/sub 2/. In singlephase solid solutions ZrB/sub 2/ in specimens of (Ti, Cr)B/sub 2/, annealed at 1900 deg C, reaches maximum microhardness of 3900 kg/mm/sup 2/ (at 20 mole% ZrB/sub 2/) and electric conductivity 216 mu omega /cm with 10 mole% ZrB/sub 2/. (R.V.J.)
- Research Organization:
- All Union Research Inst. of Aviation Materials
- NSA Number:
- NSA-12-005394
- OSTI ID:
- 4312261
- Journal Information:
- Doklady Akad. Nauk S.S.S.R., Vol. Vol: 116; Other Information: Orig. Receipt Date: 31-DEC-58
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
Similar Records
Phase formation during anneal of supersaturated TiB{sub 2}-CrB{sub 2}-WB{sub 2} solid solutions
CHEMICAL STABILITY AND HYDROLYTIC DECOMPOSITION OF THE DIBORIDES OF CERTAIN TRANSITION METALS INTERACTING WITH ACIDS