ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The Al/AlN bonded corundum based multiphase material was prepared by raw materials offused alumina and metallic aluminum powder by in situ reaction at 1100°C for 3h in N2 . The XRDanalysis showed that the mineral phases of prepared material are corundum, metallic aluminum andAlN respectively. The SEM investigation revealed that both tetragonal whiskers and hexagonpowders of AlN were formed. The results of hydration tests indicated that the rate of weight gain andpulverization of the material were negligible and the ratio of residual crushing strength was kept at ahigh level. The XRD patterns of samples after hydration tests identified that the AlN phase stillremained although a small amount of AlOOH and Al(OH)3 was formed due to the hydration of AlN. Itis believed that the limited hydration of AlN should be contributed to the dissolution of O element toAlN. The hydration mechanism of AlN was discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1133.pdf
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