In this section, you can access to the latest technical information related to the FUTURE project topic.

Suppression of Ti3+ generation in Ba3.75Nd9.5Ti17.5M0.5O54 (M = Cu, Cr, Al, Mn) ceramics

The suppression of Ti3+ generation in Ba3.75Nd9.5Ti18O54 (BNT) ceramic sintered at high temperature is investigated by substituting four metal ions M (M = Cu2+, Cr3+, Al3+, Mn4+) for Ti4+ at B-site. The XRD results show BNT ceramics substituted by M are formed as single tungsten-bronze type structured phase. All M substitutions have significant impact on the suppression of oxygen vacancies (VO••) and Ti3+ generation in BNT ceramic, which is confirmed by XPS results. BNTM ceramics have noticeable increase of Q×f values and decrease of positive ?f values, but tiny decline in ?r values. The SEM images of BNTM ceramics show a promotion of grain size by substituting M for Ti, which may be conducive to improvement on Q×f values.

» Author: Zhe Xiong, Bin Tang, Xing Zhang, Chengtao Yang, Shuren Zhang

» Reference: 10.1016/j.ceramint.2018.07.091

» Publication Date: 15/10/2018

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