THE CHEMICAL AND HEAT RESISTANCE OF THE NITRIDES OF THE THIRD GROUP (in Russian)
Powdered and hot-pressed specimens of the nitrides of Al, Ga, In, and Sc were subjected to chemical attack and to high temperatures in order- to clarify the contradictory data in the literature. Exposure to concentrated and diluted HCl and HNO/sub 3/ at room temperature and at the boiling point indicated that their resistance decreases in the following order: GaN > AlN > InN while a reverse order was noted in solutions of alkalis. GaN, InN, and ScN were found to be quite resistant against the action of cold and boiling NaOH solutions. Studies of the behavior of these materials at elevated temperatures showed that AlN, GaN and ScN are not oxidized in air up to 800, 700, and 600 deg C, respectively but InN is completely decomposed when exposed to 350 deg C in air, yielding In/sub 2/O/sub 3/. (TTT)
- Research Organization:
- Inst. of Metal Ceramics and Special Alloys, Ukrainian Academy of Sciences, SSR
- NSA Number:
- NSA-17-003434
- OSTI ID:
- 4776676
- Journal Information:
- Zh. Neorgan. Khim., Journal Name: Zh. Neorgan. Khim. Vol. Vol: 7
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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