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kuailefyz木虫 (正式写手)
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求助翻译一段关于超硬质涂层论文的摘要部分
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There is an increasing number of applications for hard coatings in engineering where both high oxidation resistance and hot hardness are required. One way to address this problem is to use hard ceramic coatings which are a combination of more than one metal so that the coating performance will benefit from the combined mechanical properties of the metals present. In this study, chromium aluminium nitride (Cr–Al– N), titanium nitride (Ti–N), titanium aluminium nitride (Ti–Al–N) and chromium nitride (Cr–N) coatings were deposited on 6.35 mm HSS drills and on hardened and polished AISI M2 steel test discs by means of electron beam plasma-assisted physical vapour deposition. For all depositions, the coating temperature was below 500 -C. Laboratory tests were performed to characterise the mechanical and tribological properties of the coatings. Along with the laboratory tests, accelerated drilling tests and actual industrial applications (punching and gear- shaping) were also used to evaluate the performance of the coatings. The results from the laboratory characterisation, drill tests and industrial applications all showed that Cr–Al–N performs exceptionally well compared to the industry ‘‘standards’’ of Ti–N, Ti–Al–N and titanium carbo-nitride (Ti–C–N). The exceptional performance of Cr–Al–N compared to the other coatings is considered with reference to the coatings_ characteristics. [ Last edited by kuailefyz on 2009-12-16 at 16:24 ] |
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kuailefyz
木虫 (正式写手)
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3楼2009-12-16 20:25:08
caozhichao0
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有对坚硬涂层的增加号码申请在高抗氧化和热的坚硬的工程学需求. 一种方式论及这个问题将使用是超过一种金属的组合，以便涂层的坚硬陶瓷涂层表层将受益于当前金属的联合的机械性能。 在这项研究中，铬铝氮化物(Cr–Al–N)，钛氮化物(Ti–N)，钛铝氮化物(Ti–Al–N)和铬氮化物(Cr–N)涂层在6.35 mm HSS被放置了drills和在通过电子束的被硬化的和被擦亮的AISI M2钢测试圆盘等离子协助了物理蒸气喷镀。 为所有 depositions，涂层温度在500以下- C。实验室试验执行描绘机械和摩擦学涂层的properties。 与实验室试验、加速的钻探试验和实际工业应用一起(猛击和齿轮 shaping)也被用于评估涂层的表现。 从实验室描述特性，钻子测试和工业的结果 applications全部表示， Cr–Al–N执行与产业Ti–N、Ti–Al–N和钛‘‘standards’’相当好地比较 carbo-nitride (Ti–C–N)。 Cr–Al–N例外表现与其他涂层比较考虑关于 coatings_特征。 |
2楼2009-12-16 18:36:50