Xiangming Li , Zijian Su , Xianwen Li , Junlong Zhang , Qinghong Meng , Wanjun Yu , Zuju Ma , Junting Liu
{"title":"用 Fe2O3 作为供氧体提高发泡陶瓷的发泡性能","authors":"Xiangming Li , Zijian Su , Xianwen Li , Junlong Zhang , Qinghong Meng , Wanjun Yu , Zuju Ma , Junting Liu","doi":"10.1016/j.matchemphys.2024.130048","DOIUrl":null,"url":null,"abstract":"<div><div>A solution is proposed to reduce the cost of preparing foamed ceramics (FCs) by adding Fe<sub>2</sub>O<sub>3</sub> to the material system. As the Si<sub>3</sub>N<sub>4</sub> in the Fe<sub>2</sub>O<sub>3</sub>–free material system increases, the molten ceramic matrix allows a slight increase in gas generation at elevated temperatures, resulting in a slight increase in the foaming volume of FCs. The addition of Fe<sub>2</sub>O<sub>3</sub> increases the oxygen supply capacity of the molten ceramic matrix at elevated temperatures, thereby accelerating the oxidation of Si<sub>3</sub>N<sub>4</sub> and consequently increasing the foaming volume of the FCs. The FCs sintered from the 5 wt% Fe<sub>2</sub>O<sub>3</sub> and 2 wt% Si<sub>3</sub>N<sub>4</sub> material system at 1160–1180 °C have satisfactory overall performance with total/closed porosity of (73.6–79.5)%/(71.4–75.7)% and compressive strength of 10.2–15.4 MPa. The addition of Fe<sub>2</sub>O<sub>3</sub> to the material system can reduce the dosage of Si<sub>3</sub>N<sub>4</sub> for FCs preparation, thereby decreasing the cost of FCs preparation.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Improving the foaming performance of foamed ceramics using Fe2O3 as an oxygen donor\",\"authors\":\"Xiangming Li , Zijian Su , Xianwen Li , Junlong Zhang , Qinghong Meng , Wanjun Yu , Zuju Ma , Junting Liu\",\"doi\":\"10.1016/j.matchemphys.2024.130048\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A solution is proposed to reduce the cost of preparing foamed ceramics (FCs) by adding Fe<sub>2</sub>O<sub>3</sub> to the material system. As the Si<sub>3</sub>N<sub>4</sub> in the Fe<sub>2</sub>O<sub>3</sub>–free material system increases, the molten ceramic matrix allows a slight increase in gas generation at elevated temperatures, resulting in a slight increase in the foaming volume of FCs. The addition of Fe<sub>2</sub>O<sub>3</sub> increases the oxygen supply capacity of the molten ceramic matrix at elevated temperatures, thereby accelerating the oxidation of Si<sub>3</sub>N<sub>4</sub> and consequently increasing the foaming volume of the FCs. The FCs sintered from the 5 wt% Fe<sub>2</sub>O<sub>3</sub> and 2 wt% Si<sub>3</sub>N<sub>4</sub> material system at 1160–1180 °C have satisfactory overall performance with total/closed porosity of (73.6–79.5)%/(71.4–75.7)% and compressive strength of 10.2–15.4 MPa. The addition of Fe<sub>2</sub>O<sub>3</sub> to the material system can reduce the dosage of Si<sub>3</sub>N<sub>4</sub> for FCs preparation, thereby decreasing the cost of FCs preparation.</div></div>\",\"PeriodicalId\":18227,\"journal\":{\"name\":\"Materials Chemistry and Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-10-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Chemistry and Physics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0254058424011763\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Chemistry and Physics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0254058424011763","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Improving the foaming performance of foamed ceramics using Fe2O3 as an oxygen donor
A solution is proposed to reduce the cost of preparing foamed ceramics (FCs) by adding Fe2O3 to the material system. As the Si3N4 in the Fe2O3–free material system increases, the molten ceramic matrix allows a slight increase in gas generation at elevated temperatures, resulting in a slight increase in the foaming volume of FCs. The addition of Fe2O3 increases the oxygen supply capacity of the molten ceramic matrix at elevated temperatures, thereby accelerating the oxidation of Si3N4 and consequently increasing the foaming volume of the FCs. The FCs sintered from the 5 wt% Fe2O3 and 2 wt% Si3N4 material system at 1160–1180 °C have satisfactory overall performance with total/closed porosity of (73.6–79.5)%/(71.4–75.7)% and compressive strength of 10.2–15.4 MPa. The addition of Fe2O3 to the material system can reduce the dosage of Si3N4 for FCs preparation, thereby decreasing the cost of FCs preparation.
期刊介绍:
Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.