Welcome to Visit BULLETIN OF THE CHINESE CERAMIC SOCIETY! Today is

BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2021, Vol. 40 ›› Issue (9): 3138-3144.

• Glass • Previous Articles     Next Articles

Crystallization Phase Change and Mechanical Properties Characterization of LAS Glass-Ceramics after Ion Exchange

HAN Han1, PENG Ruixin1, LI Xiaofan1, ZHAO Huifeng2,3, JIANG Hong1,2,3,4, MA Yanping1,4   

  1. 1. State Key Laboratory of Marine Resources Utilization in the South China Sea, Hainan University, Haikou 570228, China;
    2. HNHT Special Glass Technology Co., Ltd., Chengmai 571924, China;
    3. State Key Laboratory of Special Glass, Chengmai 571924, China;
    4. Key Laboratory of Special Glass in Hainan Province, Hainan University, Haikou 570228, China
  • Received:2021-03-23 Revised:2021-04-02 Online:2021-09-15 Published:2021-10-08

Abstract: The Li2O-Al2O3-SiO2 (LAS) glass-ceramics is a practical glass-ceramics system with high performance. In this experiment, Li2O, Al2O3 and SiO2 were used as main raw materials, and the glass-ceramics with petalite as the main crystal phase was prepared by integral crystallization method, and then it was chemically strengthened by salt bath at low temperature for ion exchange. The surface morphology and mechanical properties of chemically strengthened LAS glass-ceramics were studied by X-ray diffractometer and scanning electron microscope. The results show that after chemical strengthening, the crystallization phase disappeares on the surface of glass-ceramics in this system, and the Vickers hardness decreases significantly, while bending strength increases. After strengthening for 10 h, an amorphous layer of 740 nm appeared on the surface, and the maximum bending strength reached 472 MPa.

Key words: glass-ceramics, ion exchange, de-crystallized phase, Vickers hardness, bending strength

CLC Number: