The phase transformation and thermal expansion properties of cordierite ceramics prepared using drift sands to replace pure quartz

摘要: Abstract Cordierite ceramics were prepared using drift sands as the raw material instead of traditional pure quartz through solid-state sintering within an enlarged temperature range between 1100 and 1300 °C. The effects adding Na 2 B 4 O 7 on phase transformation thermal expansion coefficients also investigated. experimental results show that compared with quartz, have a lower softening temperature. Thus sample from shows for cordierite transformation, which was further reduced by 1.5 wt% . Moreover, increase , enlarged, amounts interphases spinel well coefficient obtained decreased.