李林生
,
张晓颖
,
杨汝平
,
许小强
宇航材料工艺
doi:10.3969/j.issn.1007-2330.2014.Z1.014
针对某低温贮箱箱底刮伤补强,本文分别进行了小平板试样和大平板试样的缺陷补强优化,最终确定了采用1.2 mm厚、特殊塑料、R75 mm圆形、边缘斜坡过渡、双面粘贴的方式进行补强,缺陷补强后超过了母材强度,达到了优化目标,整箱极限内压试验通过验证了优化结论的正确性.
关键词:
贮箱
,
刮伤
,
补强
,
优化
Wu TANG
,
Kewei XU
材料科学技术（英）
Au/NiCr/Ta multilayered metallic films deposited on Al2O3 substrate by magnetron sputtering have been used in microwave integrated circuits (MIC). The residual stress and scratch resistance were investigated at different deposition temperature. The residual stress in as-deposited films was of tension with 155 MPa～400 MPa and changed to compression after samples annealing. It was found that both friction and acoustic emission modes can eventually be used for conventionally critical load determination, the critical characteristic load at each point corresponding to abrupt change of the friction coefficient was not sensitive to deposition temperature, but sensitive to the film thickness. Critical load is less sensitive to the change of residual stress by microscratch method.
关键词:
Residual stress
,
null
,
null
