Abstract:
A glass element is provided that is made of a glass having SiO2, Al2O3, B2O3, and Na2O. The glass has a scratch tolerance that when scratches of 1 mm length are introduced using a Knoop diamond indenter which presses upon a surface of the glass with a force of 4 Newton and is displaced along the surface with a traverse speed of 0.4 mm/s, not more than 20% of the scratches have a noticeable width including visible chipping of more than 25 μm. In some embodiments, the glass, after chemical tempering, has sodium ions that are at least partially exchanged for potassium ions so that a compressive stress zone is provided at the surface of the glass. The compressive stress is at least 700 MPa and an exchange depth of alkali ions is at least 25 μm.
Abstract translation:提供了由具有SiO 2,Al 2 O 3,B 2 O 3和Na 2 O的玻璃制成的玻璃元件。 该玻璃具有划痕公差,当使用Knoop金刚石压头引入1mm长度的划痕时,其以4牛顿的力压在玻璃表面上,并以0.4mm / s的移动速度沿表面移位, 不超过20%的刮痕具有明显的宽度,包括可见的碎裂超过25μm。 在一些实施方案中,玻璃在化学回火之后具有至少部分地与钾离子交换的钠离子,使得在玻璃表面处提供压应力区。 压缩应力为700MPa以上,碱离子的交换深度为25μm以上。
Abstract:
A glass-ceramic is disclosed, this glass-ceramic includes at least the following constituents (in mol % on oxide basis): SiO2 1-30, Al2O3 0-20, B2O3 0-25, TiO2 10-70, RE2O3 0-35, BaO 5-35, SiO2+Al2O3+B2O3
Abstract translation:公开了玻璃陶瓷,该玻璃陶瓷至少包括以下组分(以氧化物为基准的摩尔%):SiO 2 1-30,Al 2 O 3 0-20,B 2 O 3 0-25,TiO 2 10-70,RE 2 O 3 0-35 ,BaO 5-35,SiO 2 + Al 2 O 3 + B 2 O 3 <25,其中RE是镧,另一种镧系元素或钇,其中可以通过Zr,Hf,Y,Nb,V的部分替代Ti,优选至多10% ,Ta。 玻璃陶瓷中的主相是BaTi4O。
Abstract:
A glass element is provided that is made of a glass having SiO2, Al2O3, B2O3, and Na2O. The glass has a scratch tolerance that when scratches of 1 mm length are introduced using a Knoop diamond indenter which presses upon a surface of the glass with a force of 4 Newton and is displaced along the surface with a traverse speed of 0.4 mm/s, not more than 20% of the scratches have a noticeable width including visible chipping of more than 25 μm. In some embodiments, the glass, after chemical tempering, has sodium ions that are at least partially exchanged for potassium ions so that a compressive stress zone is provided at the surface of the glass. The compressive stress is at least 700 MPa and an exchange depth of alkali ions is at least 25 μm.
Abstract translation:提供了由具有SiO 2,Al 2 O 3,B 2 O 3和Na 2 O的玻璃制成的玻璃元件。 该玻璃具有划痕公差,当使用Knoop金刚石压头引入1mm长度的划痕时,其以4牛顿的力压在玻璃表面上,并以0.4mm / s的移动速度沿表面移位, 不超过20%的刮痕具有明显的宽度,包括可见的碎裂超过25μm。 在一些实施方案中,玻璃在化学回火之后具有至少部分地与钾离子交换的钠离子,使得在玻璃表面处提供压应力区。 压缩应力为700MPa以上,碱离子的交换深度为25μm以上。
Abstract:
A glass and a glass composition are provided that, following chemical tempering, not only exhibit high values of compressive stress and depth of ion exchange, but also excellent scratch tolerance. The glass composition includes SiO2, Al2O3, B2O3, ZrO2, and Na2O.
Abstract translation:提供玻璃和玻璃组合物,其在化学回火后不仅表现出高的压应力值和离子交换深度,而且具有优异的耐刮擦性。 玻璃组合物包括SiO 2,Al 2 O 3,B 2 O 3,ZrO 2和Na 2 O。