Preparation and Properties of Aluminum Phosphates and Phosphate-Bonded Bodies in the CaO-n Al2O34H3PO4(H2O) System

Kengo Yamazaki, Toshihiko Nakazawa, Masahiro Yoshimura, Shigeyuki Somiya, Yoshinobu Yamaguchi

Research output: Contribution to journalArticlepeer-review

Abstract

Aluminum phosphates were synthesized by hydrothermal treatment of the CaO.n Al2Os in H8P04 solutions at 100°C or 200°C under a pressure of 10MPa. Their thermal change was examined, together with the strength of hardened bodies. Three types of A1P04.2H20 {i.e. Lucin-type variscite, Messbach-type variscite and Metavariscite) are produced as aluminum phosphate at 100°C and 3 types of A1PO4 (Berlinite, Tridymite form and Cristobalite form) at 200°C. Decomposition and transformation of variscites during heating were also studied in air by TG-DTA and X-ray diffractometry. The strength of hardened bodies increased with the decrease of their GaO/Al2O3 ratio and was enhanced up to 150 to 290MPa for the products in the system of CA6.

Original languageEnglish
Pages (from-to)1422-1428
Number of pages7
JournalNippon Kagaku Kaishi
Volume1981
Issue number9
DOIs
Publication statusPublished - 1981

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint

Dive into the research topics of 'Preparation and Properties of Aluminum Phosphates and Phosphate-Bonded Bodies in the CaO-n Al<sub>2</sub>O<sub>3</sub>4H<sub>3</sub>PO<sub>4</sub>(H<sub>2</sub>O) System'. Together they form a unique fingerprint.

Cite this