L. S. Alekseeva, A. V. Nokhrin, A. I. Orlova, M. S. Boldin, A. V. Voronin, A. A. Murashov, V. N. Chuvil’deev
{"title":"具有科斯纳拉特结构的 Sr0.5Zr2(PO4)3 磷酸盐在各种环境中的化学稳定性研究","authors":"L. S. Alekseeva, A. V. Nokhrin, A. I. Orlova, M. S. Boldin, A. V. Voronin, A. A. Murashov, V. N. Chuvil’deev","doi":"10.1134/S1066362223060036","DOIUrl":null,"url":null,"abstract":"<p>Samples of ceramics based on Sr<sub>0.5</sub>Zr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> phosphate with the structure of the kosnarite mineral (NaZr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>, NZP) were obtained by spark plasma sintering. Submicron phosphate powders with particle sizes less than 1 μm were produced by the sol–gel method. Powders and ceramics have a single-phase NZP structure. The relative density of the ceramics was 97.6%. The chemical stability of the obtained ceramics was studied in static mode at 90°C in distilled and mineral water and in acidic and alkaline environments. The minimum achieved leaching rates were ~10<sup>–4</sup>–10<sup>–6</sup> g/(cm<sup>2</sup> day). The influence of the contact environment on the rate and mechanism of Sr leaching from Sr<sub>0.5</sub>Zr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> ceramic samples within 42 days was investigated. It was shown that over testing in distilled water and in mineral water (up to 7 days) Sr leaching occurs due to the dissolution of the surface layer of ceramics and after 7 days of testing in mineral water, due to washing out of Sr from the open ceramic surface.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"65 6","pages":"634 - 641"},"PeriodicalIF":0.9000,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of the Chemical Stability of Sr0.5Zr2(PO4)3 Phosphate with a Kosnarite Structure in Various Environments\",\"authors\":\"L. S. Alekseeva, A. V. Nokhrin, A. I. Orlova, M. S. Boldin, A. V. Voronin, A. A. Murashov, V. N. Chuvil’deev\",\"doi\":\"10.1134/S1066362223060036\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Samples of ceramics based on Sr<sub>0.5</sub>Zr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> phosphate with the structure of the kosnarite mineral (NaZr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>, NZP) were obtained by spark plasma sintering. Submicron phosphate powders with particle sizes less than 1 μm were produced by the sol–gel method. Powders and ceramics have a single-phase NZP structure. The relative density of the ceramics was 97.6%. The chemical stability of the obtained ceramics was studied in static mode at 90°C in distilled and mineral water and in acidic and alkaline environments. The minimum achieved leaching rates were ~10<sup>–4</sup>–10<sup>–6</sup> g/(cm<sup>2</sup> day). The influence of the contact environment on the rate and mechanism of Sr leaching from Sr<sub>0.5</sub>Zr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> ceramic samples within 42 days was investigated. It was shown that over testing in distilled water and in mineral water (up to 7 days) Sr leaching occurs due to the dissolution of the surface layer of ceramics and after 7 days of testing in mineral water, due to washing out of Sr from the open ceramic surface.</p>\",\"PeriodicalId\":747,\"journal\":{\"name\":\"Radiochemistry\",\"volume\":\"65 6\",\"pages\":\"634 - 641\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2024-02-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiochemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1066362223060036\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1066362223060036","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Study of the Chemical Stability of Sr0.5Zr2(PO4)3 Phosphate with a Kosnarite Structure in Various Environments
Samples of ceramics based on Sr0.5Zr2(PO4)3 phosphate with the structure of the kosnarite mineral (NaZr2(PO4)3, NZP) were obtained by spark plasma sintering. Submicron phosphate powders with particle sizes less than 1 μm were produced by the sol–gel method. Powders and ceramics have a single-phase NZP structure. The relative density of the ceramics was 97.6%. The chemical stability of the obtained ceramics was studied in static mode at 90°C in distilled and mineral water and in acidic and alkaline environments. The minimum achieved leaching rates were ~10–4–10–6 g/(cm2 day). The influence of the contact environment on the rate and mechanism of Sr leaching from Sr0.5Zr2(PO4)3 ceramic samples within 42 days was investigated. It was shown that over testing in distilled water and in mineral water (up to 7 days) Sr leaching occurs due to the dissolution of the surface layer of ceramics and after 7 days of testing in mineral water, due to washing out of Sr from the open ceramic surface.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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