A kind of glass-ceramic and chemically strengthened glass-ceramic and application thereof
A glass-ceramic and chemical technology, applied in the field of glass-ceramics, can solve problems such as low magnetic loss, use, and large magnetic loss.
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Embodiment 1
[0050] A kind of glass ceramics, in terms of mass percentage of oxide, the composition of the glass ceramics is SiO 2 50%, Al 2 o 3 15.5%, Na 2 O 14%, K 2 O 2%, MgO 13.2%, ZrO 2 2%, P 2 o 5 4.3%. The glass-ceramic of this embodiment can be used as a high-transparency and high-strength basic glass-ceramic for the front cover of a 5G communication mobile terminal. The light transmittance of a sample with a thickness of 1mm and a wavelength of 550nm is 92%. The microhardness is 5.7GPa, the four-point bending strength is 180Mpa, and the fracture toughness is K IC Up to 0.6MPa·mm 0.5 .
Embodiment 2
[0052] A kind of glass ceramics, in terms of mass percentage of oxide, the composition of the glass ceramics is SiO 2 48.2%, Al 2 o 3 20.6%, Na 2 O 13.5%, K 2O 1%, MgO 7.5%, ZrO 2 2%, Li 2 O3.7%, P 2 o 5 1.5%, Sb 2 o 3 1%, RbO 2 1%. The glass-ceramic of this embodiment can be used as a high-transparency and high-strength basic glass-ceramic for the front cover of a 5G communication mobile terminal. The light transmittance of a 1mm-thick sample at a wavelength of 550nm is 91.5%, the microhardness is 5.9GPa, the four-point bending strength is 160Mpa, and the fracture toughness is K IC Up to 0.8MPa·mm 0.5 .
Embodiment 3
[0054] A kind of glass ceramics, in terms of mass percentage of oxide, the composition of the glass ceramics is SiO 2 70%, Al 2 o 3 10%, Na 2 O 8%, K 2 O 2%, MgO 2%, TiO 2 4%, ZnO 1%, Eu 2 o 3 1%, P 2 o 5 1%, Fe 2 o 3 1%. The glass-ceramic of this embodiment can be used as the base glass-ceramic of high strength and low magnetic loss for the back cover of a 5G communication mobile terminal, with a microhardness of 5.6GPa, a four-point bending strength of 163Mpa, and a fracture toughness of K IC Up to 0.6MPa·mm 0.5 ; For 7GHz high-frequency communication electromagnetic wave loss coefficient is 18dB / cm, magnetic susceptibility is 3.5×10 -9 m 3 / mol, the magnetic moment is 5.6×10 -24 J / T.
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