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Press release: compendex file
178
NEWS NEW TECHNIQUE FOR THE DEPOSITION OF FINE SiOz POWDER Dean W. Matson, Robert C. Petersen and R.D. Smith present, in Advanced Ceramic Materials, l(3) (1986), this new process for the deposition of fine powders using the rapid expansion of supercritical solutions. The nucleation and the condensation of solute particles are controlled by the expansion conditions. The particle size and agglomeration characteristics of the powder depend on the concentration of the solution. SILICONE CARBIDE
NITRIDE
AND
SILICONE
A comparison of physical, thermal and mechanical properties of this “third generation” of fine ceramics with those of Al ,O, is presented in New Materials Japan, 3(2) (1986). This short survey points out the interest that these ceramics hold for devices such as heat exchangers. Dealing with the same materials, Don J. Roth and George Y. Baaklini in Advanced Ceramic Materials, l(3) (1986) 252, describe the strengths and the limitations of a non-destructive technique, namely scanning laser acoustic microscopy (SLAM) for detecting internal voids in such ceramics. They point out that voids as small as 30 pm and 60 pm in diameter, for SisN, and Sic, respectively, were detected with probabilities of 0.9 if they were relatively close to the surface. POLYMER
pared a titanium-rich ceramic called polytitanocarbosilane (PTC). This new ceramic, which is heat resistant and very strong may also be reinforced with aluminum [New MateriaIs Japan, 3(4) (1986)].
PRESS RELEASE COMPENDEX
FILE
STN-Columbus, c/o Chemical Abstracts Service, A Division of the American Chemical Society, 2540 Olentaqy River Road, P.O. Box 02228, Columbus, OH 43202, U.S.A. Tel.: (614) 421-3600; telex: 6842086 chmab Compendex from Engineering Information provides comprehensive coverage of the world’s significant engineering literature. Subjects covered include but are not limited to: aerospace, mining, industrial, metal, pollution, computer, electronic, civil and water engineering. SIN offers Compendex with references of documents published since 1969. More than 1500000 engineering and technical papers published in journals, books, monographs, technical reports and standards have been included. Conference proceedings as well as selected papers presented at conference and published in a journal are also covered in Compendex. Citations to all individual conference papers appear in Ei Engineering Meetings, the companion data base to Compendex. It contains more than 350 000 citations to engineering conference papers since 1982.
CERAMIC
By adding a titanium compound and polyborodiphenylsiloxane to polydimethylsine, and subjecting the mixture to a heat treament, Ube Industries Co. Ltd. has preReactivity of Solids, News Brief, Vol. 2, No. 1-2, October
1986
NEWS NEW TECHNIQUE FOR THE DEPOSITION OF FINE SiOz POWDER Dean W. Matson, Robert C. Petersen and R.D. Smith present, in Advanced Ceramic Materials, l(3) (1986), this new process for the deposition of fine powders using the rapid expansion of supercritical solutions. The nucleation and the condensation of solute particles are controlled by the expansion conditions. The particle size and agglomeration characteristics of the powder depend on the concentration of the solution. SILICONE CARBIDE
NITRIDE
AND
SILICONE
A comparison of physical, thermal and mechanical properties of this “third generation” of fine ceramics with those of Al ,O, is presented in New Materials Japan, 3(2) (1986). This short survey points out the interest that these ceramics hold for devices such as heat exchangers. Dealing with the same materials, Don J. Roth and George Y. Baaklini in Advanced Ceramic Materials, l(3) (1986) 252, describe the strengths and the limitations of a non-destructive technique, namely scanning laser acoustic microscopy (SLAM) for detecting internal voids in such ceramics. They point out that voids as small as 30 pm and 60 pm in diameter, for SisN, and Sic, respectively, were detected with probabilities of 0.9 if they were relatively close to the surface. POLYMER
pared a titanium-rich ceramic called polytitanocarbosilane (PTC). This new ceramic, which is heat resistant and very strong may also be reinforced with aluminum [New MateriaIs Japan, 3(4) (1986)].
PRESS RELEASE COMPENDEX
FILE
STN-Columbus, c/o Chemical Abstracts Service, A Division of the American Chemical Society, 2540 Olentaqy River Road, P.O. Box 02228, Columbus, OH 43202, U.S.A. Tel.: (614) 421-3600; telex: 6842086 chmab Compendex from Engineering Information provides comprehensive coverage of the world’s significant engineering literature. Subjects covered include but are not limited to: aerospace, mining, industrial, metal, pollution, computer, electronic, civil and water engineering. SIN offers Compendex with references of documents published since 1969. More than 1500000 engineering and technical papers published in journals, books, monographs, technical reports and standards have been included. Conference proceedings as well as selected papers presented at conference and published in a journal are also covered in Compendex. Citations to all individual conference papers appear in Ei Engineering Meetings, the companion data base to Compendex. It contains more than 350 000 citations to engineering conference papers since 1982.
CERAMIC
By adding a titanium compound and polyborodiphenylsiloxane to polydimethylsine, and subjecting the mixture to a heat treament, Ube Industries Co. Ltd. has preReactivity of Solids, News Brief, Vol. 2, No. 1-2, October
1986