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- Keywords hgh energy impact;hadfield manganese steel;mechanism of wear resistant;nano sized grain;amorphous phase; 高能冲击载荷;高锰钢;磨损机理;微晶;非晶态;
- Keywords austenite bainite steel;nodular eutectics;impact wear abrasive;amorphous structure;nano sized grain;wear resistance; 团球状共晶体奥-贝钢;冲击磨损;非晶态组织;纳米级晶粒;耐磨性;
- PTFE matrix composites were fabricated using mixing nano sized powder process and vaporizing impregnant process. 采用溶剂蒸发法和固体纳米粉末混合法制备两种工艺制备了PTFE复合材料。
- There are mainly two methods to prepare nano sized titania, uch as vapor phase process and liquid phase process. 纳米钛白的制备方法大致可分为两类,即气相法和液相法,而液相法是研究的重点和热点。
- The results show that the hardness of composites fabricated with vaporizing impregnant process is much higher than that fabricated with mixing nano sized powder process. 结果表明在填料含量相同时,溶剂蒸发法制备的PTFE复合材料的硬度显著高于固体纳米粉末混合法制备的PTFE复合材料的硬度;
- The type,reaction mechanism and application of nano sized semiconductor photocatalyst are reviewed.The improvement of photocatalyst is also discussed in brief. 对半导体光催化剂的类型、作用机理、应用及其性能改进作了综合评述。
- Compared with pure PTT, the thermal stability, crystallization and tensile performance of the PTT/MMT composites are improved due to the introduction of nano sized DK2 MMT. 与纯PTT相比,由于MMT在PTT基体中达到纳米尺寸分散,PTT/MMT复合材料的热稳定性能、结晶性能和拉伸性能都得到了明显提高。
- Nanometer sized grains contain only about 900 atoms each. 纳米尺寸的晶粒每个只包含大约900个原子。
- Carbide grade with fine size grain .Good for fine and semi-finishing machining of cast iron and nonferrous metal. Particularly for machining of Aluminun. 适用于铸铁;有色金属尤其是铝材的精加工\\半精加工;亦可加工锰钢;淬火钢等硬质材料.
- Using nitrates and etylene diamine tetra acetic acid(EDTA) as raw materials, Nano size La 0.8 Sr 0.2 FeO 3 powder was synthesized by EDTA complexing Sol Gel method at lower temperature. 以金属硝酸盐和乙二胺四乙酸 (EDTA)为原料 ;用EDTA络合溶胶 凝胶法合成了La0 .;8Sr0
- nano sized Y-type oxytitanium phthalocyanine 纳米酞菁氧钛
- They differ in size but not in kind. 这些东西的区别只是大小不同而实质一样。
- A man's shirt is sized by its neck. 男子的衬衫号码是按领口大小分的。
- We sized each other up at our first meeting. 我们初次见面时相互打量了一番。
- And the mid- size car have a lot more legroom. 而且中型车的腿部伸展空间较为宽敞。
- Keywords nano size diamond;vacuum fluxing coating;tribological property; 纳米金刚石;真空熔覆涂层;摩擦学性能;
- He sized up the situation at a glance. 他一眼就看出了这种局势。
- There is a general decrease in grain size upward. 粒度一般是向上递减的。
- Water heaters are sized to meet the needs of users. 热水器是按照用户需要的尺寸制造的。
- This is a handsomely sized room. 这间房间大得有气派。