The effect of crystal orientation on the cryogenic strength of hydroxide catalysis bonded sapphire
The effect of crystal orientation on the cryogenic strength of hydroxide catalysis bonded sapphire
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DOI：
10.1088/0264-9381/32/7/075013
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发表时间：
2015-04
影响因子：
3.5
通讯作者：
K. Haughian;R. Douglas;A. A. V. Veggel-A.;J. H. Hough-;A. Khalaidovski;S. Rowan;Toshikazu Suzuki;K. Yamamoto
中科院分区：
文献类型：
--
作者：
K. Haughian;R. Douglas;A. A. V. Veggel-A.;J. H. Hough-;A. Khalaidovski;S. Rowan;Toshikazu Suzuki;K. Yamamoto
氢氧化物催化键合已被用于引力波探测器中，以精确和安全地连接准单片二氧化硅悬浮液的组分。计划在低温下操作未来的探测器，需要改变测试质量和悬浮材料。单晶蓝宝石是一种用于低温的候选材料，目前正在研究用于KAGRA探测器。蓝宝石的晶体结构可能影响所形成的氢氧化物催化键的性质。在这里，蓝宝石样品之间形成的氢氧化物催化键的剪切强度上的蓝宝石的晶体取向的潜在影响的研究结果。在大约8 K下测试强度;这是在这样的降低的温度下蓝宝石之间的这种结合的强度的第一次测量。我们的研究结果表明，所有的取向组合研究产生足够的强度用于典型的反射镜悬架设计，平均强度>23 MPa的债券。
Hydroxide catalysis bonding has been used in gravitational wave detectors to precisely and securely join components of quasi-monolithic silica suspensions. Plans to operate future detectors at cryogenic temperatures has created the need for a change in the test mass and suspension material. Mono-crystalline sapphire is one candidate material for use at cryogenic temperatures and is being investigated for use in the KAGRA detector. The crystalline structure of sapphire may influence the properties of the hydroxide catalysis bond formed. Here, results are presented of studies of the potential influence of the crystal orientation of sapphire on the shear strength of the hydroxide catalysis bonds formed between sapphire samples. The strength was tested at approximately 8 K; this is the first measurement of the strength of such bonds between sapphire at such reduced temperatures. Our results suggest that all orientation combinations investigated produce bonds of sufficient strength for use in typical mirror suspension designs, with average strengths >23 MPa.