Glass matrix powders

Aluminide alloys, 13 530 Aluminium powder, 10 738. See also Aluminum entries Aluminohydride derivatives, 13 624 Aluminohydrides, 13 621-624 Aluminophosphate zeolites, 14 98 Aluminosilicate gels, 16 830 Aluminosilicate glass, matrix for... 

Figure 3. PL of pure silica glass (KU), powder and films (left). NLO spectra of film composition with KU substrate, CaFi-matrix and CdSe nanocrystals, detected before (1) and after y-irradiation (2) (right).

E. Bernardo, G. Scarinci, S. Hreglich, Mechanical Properties of Metal-Particulate Lead-Silicate Glass Matrix Composites Obtained by Means of Powder Technology, J. Europ. Ceram. Soc. 23, 1819-1827 (2003). 

Uniaxial and two-dimensional fiber composites with glass matrices can be produced by hot pressing [42]. The fibers are immersed in a slurry of matrix particles and then dried. The fiber/matrix powder preform is then cut into suitable dimensions, and stacked for hot pressing in order to produce dense composites. The fabricated composites are usually in the shape of flat disks or rectangular plates. 

Carbon fiber glass matrix composites were intensively studied in the 1970s [77, 78] and SiC fiber composites in the 1980s [79, 80], In both cases the fabrication method is essentially the same. Fiber tows or fabrics are first immersed in a glass powder suspension, and the powder-containing fiber sheets are stacked ready to be hot-pressed into laminates. 

Ceramic fibers can be coated with ceramic slurries and hot-pressed to make dense fiber reinforced ceramic- or glass-matrix composites, Alternatively, continuous ceramic fibers can be combined with other fibers, whiskers, or powders and formed into porous shapes used for insulation (e.g., space-shuttle tiles) or subsequently infiltrated by CVD techniques to form fiber reinforced ceramic matrix composites without hot-pressing. For example, Nextel-SiC composites made by infiltration are being considered for applications such as heat exchangers and radiant gas burner tubes [210]. 

J. C. C. Chan, R. Ohnsorge, K. Meise-Gresch, H. Eckert, Apatite crystallization in an aluminosilicate glass matrix mechanistic studies by X-ray powder diffraction, thermal analysis, and multinuclear solid-state NMR spectroscopy, Chem. Mater., 13, 4198 206 (2001). 

---