排序方式: 共有8条查询结果,搜索用时 12 毫秒
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分别采用20、25和30 J脉冲激光冲击TC17钛合金,研究其微观组织演变、表面形貌及粗糙度变化、残余应力分布以及室温拉伸性能。研究结果表明:25 J激光冲击强化后,冲击影响层α相晶粒平均尺寸由激光冲击前的11.17μm减小到6.93μm,晶体内部产生高密度位错、孪晶以及层错缺陷,位错密度由冲击前的8.11×10~(13) m~(-2)增加到3.59×10~(14) m~(-2)。20,25,30 J激光冲击强化,试样表面粗糙度减小(0.922、0.537、0.305μm),表面残余应力增大(–213、–296、–774 MPa)。激光冲击强化后TC17钛合金屈服强度提升30~70 MPa,激光冲击强化诱导晶粒细化对TC17钛合金的抗拉强度影响较小。 相似文献
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化学泥浆冻融法脱水研究 总被引:1,自引:1,他引:0
一、前言我院低放废水处理车间用化学凝聚法产生的化学沉淀泥浆(以下简称泥浆),主要含有氢氧化铁体及磷酸钙沉淀,含水量达90%以上。水泥固化前,脱水减容是重要一环。泥浆先经冻结,然后融化,再行分离脱水的工艺过程称为冻融法。把它作为水泥固化前的预处理手段,可以减少最终固化体的体积。为此,对冻融后自然沉降脱水预处理予以研究。 相似文献
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一、前言我国后处理厂现存的30%磷酸三丁醋-煤油(以下简称为30%TBP-OK)有机废液,急待寻求安全、经济、合理的处理处置方案。国内外对这类放射性有机废液较多采用焚烧法处理,亦有一部分采用水泥固化,但因包容量低,固化体性能不够理想,而未达到商用阶段。本工作试图探索用大体积浇注水泥固化法处理处置有机废液的可能性。该法的 相似文献
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Myocytes power the movement of all organs in the body. Damage to and degradation of myocytes causes
hypokinesia and muscle-related degenerative diseases. Apigenin, a kind of flavone, is being used to treat many
disorders. It exerts a host of different pharmacological activities, such as anti-inflammatory, anti-mutagenic,
cardioprotective, and antioxidant effects. Accordingly, apigenin is considered a promising candidate for myocyte
protection. In this review, we introduced the characteristics of apigenin. The means of apigenin protection of
myocytes as well as the mechanism were summarized and discussed. The protective effects can be classified into
proliferation-promoting, anti-inflammatory, atrophy-preventing, metabolism-increasing, and antioxidative effects.
Additionally, we provided some outlook on the valuable applications of apigenin in sports medicine, which eagerly
require further fundamental research. 相似文献
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