Microwave-assisted Acid Dissolution of Sintered Advanced Ceramics for Inductively Coupled Plasma Atomic Emission Spectrometry

Abstract

The microwave-assisted acid dissolution of sintered bodies of ties, high-temperature stability, high-temperature strength, 28 structural and electronic advanced ceramic materials was wear resistance, corrosion/oxidation resistance, chemical systematically evaluated. These materials included zirconiainertness, or electrical, optical and/or magnetic properties.1 based ceramics, such as m-ZrO 2 (a non-stabilized monoclinic These materials are used in structural applications (machine zirconia), Ca-PSZ and Mg-PSZ (two partially stabilized and cutting tools, wear components, heat exchangers, aerozirconias), Y-FSZ (a fully stabilized zirconia) and Ce-TZP, space components, automotive engine components such as Yb-TZP and Y-TZP/Ce (three tetragonal polycrystalline turbocharge rotors and roller cam followers, power generation zirconias); alumina-based ceramics, such as Al 2 O 3 , mullite and components, biomedical implants, processing equipment used spinel; ceria-based ceramics, such as CeO 2 -Gd 2 O 3 (cubic ceria for fabricating a variety of polymer, metal and ceramic parts) gadolinia); titania-based ceramics, such as TiO 2

PZT prepared by spray drying: From powder synthesis to electromechanical properties

“…The powder sample was dissolved by microwave-assisted acid treatment. 28 The thermogravimetry (TGA) and differential thermal analyses (DTA) were carried out on the as-sprayed PZTN powder at 10 • C/min heating rate with simultaneous thermal analyser (STA 409, Netzsch, Selb/Bavaria, Germany).…”

Direct determination of impurities in high purity silicon carbide by inductively coupled plasma optical emission spectrometry using slurry nebulization technique

“…But the power of detection was poor for the high blanks relating to the use of fuming H 2 SO 4 . The decomposition of SiC by fusion with Na 2 CO 3 + Na 2 B 4 O 7 or Li 2 B 4 O 7 has been proved efficient [6]. However, blank of flux and high salt content considerably limit its application, especially for the samples in high purity.…”

Dissolution behavior of MgO–pyrochlore composites in acidic solutions

“…For the dynamic dissolution, the film diffusion can be eliminated due to strong stirring [32]. Therefore, the obtained linear relationship between the dissolved fraction and dissolution time indicates that dissolution of MgO is a surface reaction controlled process at this reaction condition.…”

“…Efforts have been made on digestion of ZrO 2 , a compound which also has a fluorite type structure; it was found that dissolution of ZrO 2 typically requires using hydrofluoric acid (HF) or concentrated sulfuric acid (H 2 SO 4 ) at high temperature or high pressure conditions [30,31]. Microwave digestion has also been studied but corrosive etchant such as HF or concentrated H 2 SO 4 is still required [32,33]. Medvedev [7] and his co-workers investigated the dissolution behavior of a cer-cer composite MgO-ZrO 2 in nitric acid at $55°C and found that only MgO was able to be dissolved and ZrO 2 was not soluble in HNO 3 .…”