High-lithium-content glass-ceramic, chemically strengthened glass-ceramic and use thereof

A high-lithium-content microcrystalline glass, wherein the high-lithium-content microcrystalline glass comprises a lithium disilicate crystalline phase, wherein the lithium disilicate crystalline phase has a higher weight percentage than other crystalline phases present in the high-lithium-content microcrystalline glass;

• and the high-lithium-content microcrystalline glass is transparent in a visible light range;
• in terms of molar percentage of oxides, a composition of the high-lithium-content microcrystalline glass comprises:
• SiO2:
• 60.00 mol %-69.50 mol %, Al2O3:
• 0.00 mol %-2.00 mol %, P2O5:
• 1.50 mol %-3.00 mol %, ZrO2:
• 2.00 mol %-6.00 mol %, MgO:
• 0.00 mol %-2.00 mol %, ZnO:
• 0.00 mol %-2.00 mol %, Na2O:
• 0.00 mol %-3.00 mol %, K2O:
• 0.00 mol %-1.00 mol %, Li2O:
• 27.50 mol %-32.00 mol %, CaO:
• 0.00 mol %-5.00 mol %, B2O3:
• 0.00 mol %-1.00 mol %, and SrO:
• 0.00 mol %-2.00 mol %;
• and
• in terms of contents of various oxides represented by molar percentage in the composition of the high-lithium-content microcrystalline glass, the composition of the high-lithium-content microcrystalline glass satisfies:
• 2.07≤SiO2/Li2O≤2.30, 0.20≤2.25×Li2O-8×ZrO2-0.2×CaO≤0.41, 0≤(CaO+MgO+ZnO+Na2O+K2O)/(ZrO2+Li2O)≤0.15, and 0.25≤(2.2×ZrO2+0.35×CaO+Na2O)/Li2O≤0.45.