Ceramic material and method of preparing the same

A method, comprising:

• 1) weighing and mixing BaCO3, WO3, M2CO3, B2O3 and SiO2 based on a chemical formula BaWO4-xM2CO3-yBaO-zB2O3-wSiO2, wherein x=0-0.2 mole, y=0-0.05 mole, z=0-0.2 mole, w=0-0.1 mole, M represents an alkali metal ion selected from Li+, K+, Na+, and x, y, z, and w are not zero at the same time, to yield a first powder;
• 2) mixing the first powder obtained in 1), zirconia balls, and deionized water according to a mass ratio of 1:5:1-2, ball-milling for 4-7 h, drying at 80-120° C., sieving with a 40-60 mesh sieve, calcining in air atmosphere at 700-900° C. for 2-4 h, to yield a second powder;
• 3) mixing the second powder obtained in 2), zirconia balls, and deionized water according to a mass ratio of 1:5:1-2, ball-milling for 3-6 h, drying, to yield a third powder, and adding a binder to the third powder;
• and
• 4) compression molding a resulting product obtained in 3) under a pressure of 20 megapascal, drying at 400-500° C. and sintering at 850° C.-900° C. for 0.5-2 h.