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您的检索式：作者名="BaolinWang"
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| 1 | Cutting Performance of WC-Co Alloys Modified by Nano-Additives显示文摘In this paper,the microstructure of WC-Co alloys with and without nano-additives was characterized by scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The hardness and fracture toughness was tested by using a Vickers hardness tester and a universal testing machine.The cutting test was carried out at different feed velocities(250 r/min and 320 r/min),and the contact pairs are cutting tools and 45# steel bars.Results showed that the hardness and fracture toughness of WC-Co cemented carbides with nano-additives are higher than that of WC-Co cemented carbides without nano-additives,and they are increased 10.21% and 19.69%,respectively.The flank worn width and crater width of cutting tools decrease greatly with the addition of nano-additives.For the nano-modified specimen with WC grain size of 7 μm,both the flank worn width and crater width are the minimum after the cutting process.And there are little built-up layers and some pile-up regions on the flank face leading to high cutting performance for the nano-modified cemented carbides.There are some melted regions on the flank face of cutting tools without nano-additives,and the WC grains on the cross section of alloys without nano-additives show severe fragmentation.The wear type of WC-Co is flank wear,and the wear mechanism is abrasive,adhesion and oxidation wear. | You Wang Zhaoyi Pan Chengbiao Wang Xiaoguang Sun Zhijian Peng BaolinWang | 2012 | Journal of Materials Science & Technology2012，28，3： | 1 |
| 2 | 加拿大Mackenzie山谷细粒状多年冻土层滑坡的岩土工程野外调查显示文摘与温带区滑坡相比,细粒状多年冻土区的滑坡受到的关注要少得多。这些区域的滑坡不被关注主要是由于位置偏僻和社会以及经济影响相对低。最近,随着对北部地区(特别是来自能源部门)关注和活动范围增加,要求对这些地区的滑坡做更加深入地调查。本文描述了最近调查的加拿大北部许多滑坡的中的一些岩土工程野外观测结果。收集的滑坡位置的资料为进一步了解破坏机理和调查提供了有价值的信息。描述的信息包括:滑坡位置和方向、边坡和滑坡的形态、地表和地下物质典型条件、滑坡流现象、融冻层信息(每年冻结一解冻圈附近土壤)、悬崖头部表面消融的速度、地表植被条件。根据野外观测讨论了触发滑坡的可能性机理,同时还讨论了滑坡过程和稳定机理。在一些树木极少或者没有树木的区域,极端气候条件对滑坡发生可以起到重要的作用,而在其他的树木密集区,森林火灾可能也是诱发滑坡的主要因素。边坡固有特性也是边坡稳定性的关键,例如,融冻层倾角、厚度和强度、土壤湿度和冰含量、地表有机覆盖隔热效果、根基加固效果。热流系统的变化是多年冻土区边坡稳定的关键因素,在给定的热条件下,融冻层的剪切强度是边坡稳定性的主要因素。本文讨论了进一步研究值得关注的几个方面。 | BaolinWang 葛秀珍(翻译) 何燮周(校对) | 2009 | 水文地质工程地质技术方法动态2009，，5： | 0 |
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