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首页> 外文会议>Conference on the Fractography of Glasses and Ceramics >SCRATCH DAMAGE IN ION-EXCHANGED ALKALI ALUMINOSILICATE GLASS: CRACK EVOLUTION AND THE DEPENDENCE OF LATERAL CRACKING THRESHOLD ON CONTACT GEOMETRY
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SCRATCH DAMAGE IN ION-EXCHANGED ALKALI ALUMINOSILICATE GLASS: CRACK EVOLUTION AND THE DEPENDENCE OF LATERAL CRACKING THRESHOLD ON CONTACT GEOMETRY

机译：离子交换碱铝硅酸盐玻璃涂层损伤：裂纹进化与横向裂纹阈值对接触几何的依赖性

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摘要

The scratch behavior of ion-exchanged alkali aluminosilicate glass was investigated using sliding indentation. It is demonstrated that the evolution of crack systems originating in the subsurface, i.e. median and lateral cracks, differs for glass having a high surface compressive stress and a deep layer of compression when compared to non-strengthened glass. In non-strengthened glasses, the median crack forms prior to lateral cracking systems. In highly ion-exchanged glasses, the median crack is suppressed and lateral crack systems form preferentially. At levels of ion-exchange that suppress the median crack prior to the formation of lateral cracks, the outward propagation of lateral cracks does not appear to be influenced by the compressive stress.
机译：采用滑动凹口研究了离子交换碱铝硅酸盐玻璃的划痕行为。结果证明，与非加强玻璃相比，源自下属的裂纹系统的裂缝系统的演变，即中位和横向裂缝的不同之处在于具有高表面压缩应力的玻璃和深层压缩层。在非加强的眼镜中，在横向开裂系统之前的中值裂缝形式。在高离子交换的眼镜中，中值裂缝被抑制和横向裂纹系统优先形成。在离子交换的水平下，在形成横向裂缝之前抑制中值裂缝，横向裂缝的向外传播似乎不会受到压缩应力的影响。

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